2002 Microchip Technology Inc. DS21394B-page 1
TC14433/A
Features
• Accuracy: ±0.05% of Reading ±1 Count
• Two Voltage Ranges: 1.999V and 199.9 mV
• Up to 25 Conversions Per Second
•Z
IN > 1000M Ohms
• Single Positive Voltage Reference
• Auto-Polarity and Auto-Zero
• Overrange and Underrange Signals Available
• Operates in Auto-Ranging Circuits
• Uses On-Chip System Clock or External Clock
• Wide Supply Range: ±4.5V to ±8V
Applications
• Portable Instruments
• Digital Voltmeters
• Digital Panel Meters
• Digital Scales
• Digital Thermometers
• Remote A/D Sensing Systems
• MPU Systems
Device Selection Table
Package Type
Part Number Package Temperature
Range
TC14433AEJG 24-Pin CERDIP
(Wide) -40°C to +85°C
TC14433AELI 28-Pin PLCC -40°C to +85°C
TC14433AEPG 24-Pin PDIP
(Wide) -40°C to +85°C
TC14433COG 24-Pin SOIC
(Wide) 0°C to +70°C
TC14433EJG 24-Pin CERDIP
(Wide) -40°C to +85°C
TC14433ELI 28-Pin PLCC -40°C to +85°C
TC14433EPG 24-Pin PDIP
(Wide) -40°C to +85°C
1
2
3
4
16
15
14
5
6
7
8
13
19
18
17
9
10
11
12
20
21
22
23
24 VDD
Q3
Q2
Q1
Q0
DS1
DS3
DS2
DS4
EOC
OR
R1
C1
CO1
CO2
R1/C1
CLK0
CLK1
DU
VEE VSS
VAG
VX
VREF
TC14433/A
24-Pin PDIP (Wide)
24-Pin CERDIP (Wide)
24-Pin SOIC (Wide)
VREF
NC
VDD
Q3
Q1
Q0
DS2
DS3
DS1
DS4
Q2
VAG
VX
CO1
VEE
CO2
R1/C1
C1
R1
VSS
EOC
OR
NC NC
NC
DU
CLK0
CLK1
19
20
21
22
23
24
25
11
10
9
8
7
6
5
TC14433/A
12 13 14 15 17 18
4 3 2 1 27 2628
16
28-Pin PLCC
Note 1: NC = No internal connection (In 28-Pin PLCC).
2: 24-Pin SOIC (Wide) package, only for
TC14433 device.
3-1/2 Digit, Analog-to-Digital Converter
TC14433/A
DS21394B-page 2
2002 Microchip Technology Inc.
General Description
The TC14433 is a low power, high performance,
monolithic CMOS 3-1/2 digit A/D converter. The
TC14433 combines both analog and digital circuits on
a single IC, thus minimizing the number of external
components.
This dual slope A/D converter provides automatic
polarity and zero correction with the addition of two
external resistors and two capacitors. The full scale
voltage range of this ratiometric IC extends from 199.9
millivolts to 1.999 volts. The TC14433 can operate over
a wide range of power supply voltages, including
batteries and standard 5-volt supplies.
The TC14433A features improved performance over
the industry standard TC14433. Rollover, which is the
measurement of identical positive and negative
signals, is specified to have the same reading within
one count for the TC14433A. Power consumption of
the TC14433A is typically 4mW, approximately one-
half that of the industry standard TC14433.
The TC14433/A is available in 24-Pin PDIP, 24-Pin
CERDIP, 24-Pin SOIC (TC14433 device only), and
28-Pin PLCC packages.
Typical Application
3
1
4
5
6
7
8
23
22
21
20
13
9
14
15 19 18 17 16
11 10 2 12 24
4
2
3
5
9
10
11
12
13
14
15
1
7
6
5
4
3
2
1
10
11
12
13
14
15
16
0.1µF**
0.1µF
0.1µF
50µF
0.1µF**
R
1
*
*R
1
= 470kΩ for 2V Range
R
1
= 27kΩ for 200mV Range
**Mylar Capacitor
V
X
20k
D
C
S
R
TC14433
Q
Q
D
C
S
R
+5V
-5V
16
+5V +5V
Segment
Resistors
150Ω (7)
+5V
Q
Q
-5V
-5V
-5V
-5V
8
Minus Sign
200Ω
51k
67
+5V
-5V
-5V
-5V
MPS-A12
(4)
Common
Anode Led
Display
MPS-A12
300k
R
C
0.1
14013B
5
3
9
11
1
2
13
12
6
714
10
fgedcba
+5V
1µF
1µF
48
DS4
DS3
DS2
DS1
-5V
MCP1525
4543B
1413
V
IN
V
OUT
V
SS
Plus Sign
110Ω
2002 Microchip Technology Inc. DS21394B-page 3
TC14433/A
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage (VDD –V
EE)...................-0.5V to +18V
Voltage on Any Pin:
ReferencetoV
EE .....................-0.5V to (VDD +0.5)
DC Current, Any Pin: ........................................±10mA
Power Dissipation (TA≤70°C):
Plastic PLCC .................................................1.0W
Plastic PDIP..................................................940W
SOIC.............................................................940W
CERDIP.......................................................1.45W
Operating Temperature Range ............... 0°C to +70°C
Storage Temperature Range..............-65°C to +160°C
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
TC14433/A ELECTRICAL SPECIFICATIONS
Electrical Characteristics: VDD =+5V,V
EE =-5V,C
1=0.1µF, (Mylar), C0=0.1µF, RC=300kΩ,R
1=470kΩ @V
REF =2V,
R1=27kΩ @V
REF = 200mV, unless otherwise specified.
Symbol Parameter Min Typ Max Min Typ Max Units Test Conditions
Analog Input TA= +25°C TA=+25°C
SYE Rollover Error (Positive) and
Negative Full Scale
Symmetry
-1 — +1 — — — Counts 200mV Full Scale
VIN -VIN =+V
IN
NL Linearity Output Reading
(Note 1) -0.05 +0.05 +0.05 — — — %rdg VREF =2V
-1 count — +1 count — — — %rdg VREF =200mV
SOR Stability Output Reading
(Note 2) —— 2———LSDV
X=1.99V,
VREF =2V
—— 3———LSDV
X=199mV,
VREF =200mV
ZOR Zero Output Reading — 0 0 ———LSD VX=0V,V
REF =2V
IIN Bias Current: Analog Input
Reference Input
Analog Ground
—±20 ±100 ———pA
—±20 ±100 ——— pA
—±20 ±100 ——— pA
CMRR Common mode Rejection — 65 — — —— dB VX=1.4V,V
REF =2V,
FOC =32kHz
Note 1: Accuracy - The accuracy of the meter at full scale is the accuracy of the setting of the reference voltage. Zero is
recalculated during each conversion cycle. The meaningful specification is linearity. In other words, the deviation from
correct reading for all inputs other than positive full scale and zero is defined as the linearity specification.
2: The LSD stability for 200mV scale is defined as the range that the LSD will occupy 95% of the time.
3: Pinnumbersreferto24-pinPDIP.
TC14433/A
DS21394B-page 4
2002 Microchip Technology Inc.
Digital
VOL Output Voltage
(Pins14to23)(Note 3) — 0 0.05 — — 0.05 V VSS = 0 V, "0" Level
— -5 -4.95 — — -4.95 V VSS = -5V, "0" Level
VOH Output Voltage
(Pins14to23)(Note 3) 4.95 5 — 4.95 — — V VSS = 0V, "1" Level
4.95 5 — 4.95 — — V VSS = -5V, "1" Level
IOH Output Current
(Pins14to23) -0.2 -0.36 — -0.14 — — mA VSS =0V,V
OH =4.6V
Source
- 0.5 -0.9 — -0.35 — — mA VSS =-5V,V
OH =5V
Source
IOL Output Current
(Pins14to23) 0.51 0.88 — 0.36 — — mA VSS =0V,V
OL =0.4V
Sink
1.3 2.25 — 0.9 — — mA VSS =-5V,
VOL = -4.5V Sink
fCLK Clock Frequency — 66 — — — — kHzRC=300kΩ
IDU Input Current -DU — ±0.00001 ±0.3 — — ±1 µA
Power
IQQuiescent Current: 14433A: — — — — — — — VDD to VEE,I
SS =0
— 0.4 2 — — 3.7 mA VDD =5,V
EE =-5
— 1.4 4 — — 7.4 mA VDD =8,V
EE =-8
Quiescent Current: 14433: — — — — — — — VDD to VEE,I
SS =0
— 0.9 2 — — 3.7 mA VDD =5,V
EE =-5
— 1.8 4 — — 7.4 mA VDD =8,V
EE =-8
PSRR Supply Rejection — 0.5 — — — — mV/V VDD to VEE,I
SS =0,
VREF =2V,
VDD =5,V
EE =-5
TC14433/A ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: VDD =+5V,V
EE =-5V,C
1=0.1µF, (Mylar), C0=0.1µF, RC=300kΩ,R
1=470kΩ @V
REF =2V,
R1=27kΩ @V
REF = 200mV, unless otherwise specified.
Symbol Parameter Min Typ Max Min Typ Max Units Test Conditions
Note 1: Accuracy - The accuracy of the meter at full scale is the accuracy of the setting of the reference voltage. Zero is
recalculated during each conversion cycle. The meaningful specification is linearity. In other words, the deviation from
correct reading for all inputs other than positive full scale and zero is defined as the linearity specification.
2: The LSD stability for 200mV scale is defined as the range that the LSD will occupy 95% of the time.
3: Pinnumbersreferto24-pinPDIP.
2002 Microchip Technology Inc. DS21394B-page 5
TC14433/A
2.0 PIN DESCRIPTIONS
ThedescriptionsofthepinsarelistedinTable2.0.
TABLE 2-1: PIN FUNCTION TABLE
Pin No.
(24-Pin PDIP)
(24-Pin CERDIP)
(24-Pin SOIC)
Pin No.
(28-Pin PLCC) Symbol Description
12V
AG This is the analog ground. It has a high input impedance. The pin determines the
reference level for the unknown input voltage (VX) and the reference voltage (VREF).
23V
REF Reference voltage - Full scale output is equal to the voltage applied to VREF.
Therefore, full scale voltage of 1.999V requires 2V reference and 199.9mV full scale
requires a 200mV reference. VREF functions as system reset also. When switched
to VEE, the system is reset to the beginning of the conversion cycle.
34V
XThe unknown input voltage (VX) is measured as a ratio of the reference voltage
(VREF) in a rationetric A/D conversion.
45R
1This pin is for external components used for the integration function in the dual
slope conversion. Typical values are 0.1µF (mylar) capacitor for C1.
56R
1/C1R1=470kΩ(resistor) for 2V full scale.
67C
1R1=27kΩ(resistor) for 200mV full scale. Clock frequency of 66kHz gives 250msec
conversion time.
79CO
1These pins are used for connecting the offset correction capacitor.
The recommended value is 0.1µF.
810CO
2These pins are used for connecting the offset correction capacitor.
The recommended value is 0.1µF.
9 11 DU Display update input pin. When DU is connected to the EOC output, every
conversion is displayed. New data will be strobed into the output latches during the
conversion cycle if a positive edge is received on DU, prior to the ramp down cycle.
When this pin is driven from an external source, the voltage should be referenced
to VSS.
10 12 CLK1Clock input pins. The TC14433 has its own oscillator system clock. Connecting a
single resistor between CLK1and CLK0sets the clock frequency.
11 13 CLK0A crystal or OC circuit may be inserted in lieu of a resistor for improved CLK1,the
clock input, can be driven from an external clock source, which need only have
standard CMOS outputdrive. This pin is referenced to VEE for external clock inputs.
A300kΩresistor yields a clock frequency of about 66kHz. See Section 5.0 Typical
Characteristics. (Also see Figure 4-3 for alternate circuits.)
12 14 VEE Negative power current. Connection pin for the most negative supply. Please note
the current for the output drive circuit is returned through VSS. Typical supply
current is 0.8mA.
13 16 VSS Negative power supply for output circuitry. This pin sets the low voltage level for the
output pins (BCD, Digit Selects, EOC, OR). When connected to analog ground, the
output voltage is from analog ground to VDD. If connected to VEE, the output swing
is from VEE to VDD. The recommended operating range for VSS is between the
VDD -3 volts and VEE.
14 17 EOC End of conversion output generates a pulse at the end of each conversion cycle.
This generated pulse width is equal to one half the period of the system clock.
15 18 OR Overrange pin. Normally this pin is set high. When VXexceeds VREF the OR is low.
16 19 DS4Digit select pin. The digit select output goes high when the respective digit is
selected. The MSD (1/2 digit turns on immediately after an EOC pulse).
17 20 DS3The remaining digits turn on in sequence from MSD to LSD.
18 21 DS2To ensure that the BCD data has settled, an inter digit blanking time of two clock
periods is included.
19 23 DS1Clock frequency divided by 80 equals multiplex rate. For example, a system clock of
60kHz gives a multiplex rate of 0.8kHz.
20 24 Q0See Figure 4-4 for digit select timing diagram.
TC14433/A
DS21394B-page 6
2002 Microchip Technology Inc.
21 25 Q1BCD data output pin. Multiplexed BCD outputs contain three full digits of
information during digit select DS2,DS
3,DS
4.
22 26 Q2During DS1, the 1/2 digit, overrange, underrange and polarity information
is available.
23 27 Q3Refer to the Truth Table 4-1.
24 28 VDD Positive power supply. This is the most positive power supply pin.
1NCNotUsed.
— 8 NC Not Used.
—15NCNotUsed.
—22NCNotUsed.
TABLE 2-1: PIN FUNCTION TABLE (CONTINUED)
Pin No.
(24-Pin PDIP)
(24-Pin CERDIP)
(24-Pin SOIC)
Pin No.
(28-Pin PLCC) Symbol Description
2002 Microchip Technology Inc. DS21394B-page 7
TC14433/A
3.0 DETAILED DESCRIPTION
The TC14433 CMOS IC becomes a modified dual-
slope A/D with a minimum of external components.
This IC has the customary CMOS digital logic circuitry,
as well as CMOS analog circuitry. It provides the user
with digital functions such as (counters, latches,
multiplexers), and analog functions such as
(operational amplifiers and comparators) on a single
chip. Refer to the Functional Block diagram, Figure 3-3
Features of the TC14433/A include auto-zero, high
input impedances and auto-polarity. Low power
consumption and a wide range of power supply volt-
ages are also advantages of this CMOS device. The
system's auto-zero function compensates for the offset
voltage of the internal amplifiers and comparators. In
this "ratiometric system," the output reading is the ratio
of the unknown voltage to the reference voltage, where
a ratio of 1 is equal to the maximum count of 1999. It
takes approximately 16,000 clock periods to complete
one conversion cycle. Each conversion cycle may be
divided into 6 segments. Figure 3-1 shows the conver-
sion cycle in 6 segments for both positive and negative
inputs.
FIGURE 3-1: INTEGRATOR
WAVEFORMS AT PIN 6
Segment 1 - The offset capacitor (CO), which compen-
sates for the input offset voltages of the buffer and inte-
grator amplifiers, is charged during this period.
However, the integrator capacitor is shorted. This
segment requires 4000 clock periods.
Segment 2 - During this segment, the integrator output
decreases to the comparator threshold voltage. At this
time, a number of counts equivalent to the input offset
voltage of the comparator is stored in the offset latches
for later use in the auto-zero process. The time for this
segment is variable and less than 800 clock periods.
Segment 3 - This segment of the conversion cycle is
the same as Segment 1.
Segment 4 - Segment 4 is an up going ramp cycle with
the unknown input voltage (VXas the input to the
integrator. Figure 4-2 shows the equivalent
configuration of the analog section of the TC14433.
The actual configuration of the analog section is
dependent upon the polarity of the input voltage during
the previous conversion cycle.
FIGURE 3-2: EQUIVALENT CIRCUIT
DIAGRAMS OF THE
ANALOG SECTION
DURING SEGMENT 4 OF
THE TIMING CYCLE
Segment 5 - This segment is a down-going ramp
period with the reference voltage as the input to the
integrator. Segment 5 of the conversion cycle has a
time equal to the number of counts stored in the offset
storage latches during Segment 2. As a result,the sys-
tem zeros automatically.
Segment 6 - This is an extension of Segment 5. The
time period for this portion is 4000 clock periods. The
results of the A/D conversion cycle are determined in
this portion of the conversion cycle.
Start
123456
Typical
Positive
Input Voltage
Typical
Negative
Input Voltage
Time
Segment
Number
End
VX
VX
C1
Comparator
R1
Buffer Integrator
+
–
+
–
+
–
VX
TC14433/A
DS21394B-page 8
2002 Microchip Technology Inc.
FIGURE 3-3: FUNCTIONAL BLOCK DIAGRAM
Latches
1's 10's 100's 1,000'sClock
RC
Control Logic CMOS
Analog Subsystem
Display
Update 9
DU
End of
Conversion
EOC
14
R1R1/C C1
456
CO1CO2
78
2
1
3
VREF
VAG
VX
Reference Voltage
Analog Ground
Analog Input
Offset
Polarity Detect
10
CLK1
11
CLK0
OR Overrange
Multiplexer
TC14433/A
20-23
16 -19 DS1 – DS4
Digit Strobe
Q – Q3
BDC Data
Inte
g
rator
15
Overflow
VDD = Pin 24
VSS = Pin 13
VEE = Pin 12
2002 Microchip Technology Inc. DS21394B-page 9
TC14433/A
4.0 TYPICAL APPLICATIONS
The Typical Application circuit is an example of a 3-1/2
digit voltmeter using the TC14433 with Common-
anode displays. This system requires a 2.5V reference.
Full scale may be adjusted to 1.999V or 199.9 mV.
Input overrange is indicated by flashing a display. This
display uses LEDs with common anode digit lines.
Power supply for this system is shown as a dual ±5V
supply; however, the TC14433 will operate over a wide
voltage range
The circuit in Figure 4-1 shows a 3-1/2 digit LCD
voltmeter. The 14024B provides the low frequency
square wave signal drive to the LCD backplane. Dual
power supplies are shown here; however, one supply
maybeusedwhenV
SS isconnectedtoV
EE.Inthis
case, VAG must be at least 2.8V above VEE.
When only segments b and c of the decoder are con-
nected to the 1/2 digit of the display, 4, 0, 7 and 3
appear as 1.
The overrange indication (Q3= 0 and Q0=1)occurs
when the count is greater than 1999; (e.g., 1.999V for
a reference of 2V)The underrange indication, useful for
auto-ranging circuits, occurs when the count is less
than 180; (e.g., 0.180V for a reference of 2V).
TABLE 4-1: TRUTH TABLE
Figure 4-2 is an example of a 3-1/2 digit LED voltmeter
with a minimum of external components, (only 11
additional components). In this circuit, the 14511B
provides the segment drive and the 75492 or 1413
provides sink for digit current. Display is blanked during
the overrange condition.
Note: If the most significant digit is connected to
a display other than a "1" only, such as a
full digit display, segments other than b
and c must be disconnected. The BCD to
7-segment decoder must blank on BCD
inputs 1010 to 1111. See Table 4-1
Coded
Condition
of MSD
Q
3
Q
2
Q
1
Q
0BDC to 7-Segment
Decoding
+0 1110 Blank
Blank
Blank
Blank
-0 1010
+0UR 1111
-0UR 1011
+1 01004–1
0–1
7–1
3–1
Hook up
only segments
b and c to MSD
-1 0000
+1OR 0111
-1OR 0011
Note 1: Q3- 1/2 digit, low for "1", high for "0".
Q2- Polarity: "1" = positive, "0" = negative.
Q0- Out of range condition exists if Q0=1.
When used in conjunction with Q3,thetypeof
out of range condition is indicated; i.e., Q3=0→
OR or Q3=1→UR.
TC14433/A
DS21394B-page 10
2002 Microchip Technology Inc.
FIGURE 4-1: 3-1/2 DIGIT VOLTMETER WITH LCD DISPLAY
C01C02
RC
RC
R1
VX
VAG
VREF
VDD VSS VEE EOE DU
14013B
DS4
DS3
DS2
DS1
Q0
Q1
Q2
Q3
300k
470k
-V
-V
14013B
+V
+V
14543B +V
14070B
1/4 1/2 Digit
Plus
Sign
Minus
Sign
14070B 1/4
1/4 14070B
-V 14024B
C
R
+V
D
CRR
D
CRR +V
-V
TC14433
MCP1525
VIN
V+
VOUT
VSS
1µF
20k
0.1µF0.1µF
R1/C 1C1
Q
Q
Q
Q
g f e d c b a
BI D C B A Ph LD
14543B
+V
-V
g f e d c b a
BI D C B A Ph LD
+V
14543B
-V
g f e d c b a
BI D C B A Ph LD
2002 Microchip Technology Inc. DS21394B-page 11
TC14433/A
FIGURE 4-2: 3-1/2 DIGIT LED VOLTMETER WITH LOW COMPONENT COUNT USING
COMMON CATHODE DISPLAYS
FIGURE 4-3: ALTERNATE OSCILLATOR CIRCUITS
CLK1
CLK0
OR
TC14433
Input
V
X
300k Resitor Network
or Individual
Resistor*
R
+5V
Minus
Control
+5V
RM
Common
Cathode
Led Displa
y
75492
OR
1413*
Digit Drivers
V
EE*
*
(Minus)
Alternate Overrange Circuit
with Separated LED
+5VOR
1/6
1/7 1413
75492 R
R
OR
B1
A
B
C
D
LT
LE
I4511B
R
DP
V
IN
+5V
V
OUT
V
SS
1µF
20k
MCP1525
470k 0.1µF0.1µF
C0
1
C0
2
R
1
R
1
/C C
1
V
X
V
AG
DU
EOE
V
REF
V
SS
V
SS
V
DD
V
DD
V
EE
Q
0
Q
1
Q
2
DS
4
DS
3
DS
2
DS
1
a
b
c
d
e
f
g
Note 1: For VREF = 2000V; V: 1.999V full scale.
2: For VREF = 200mV; V: 199.9mV full scale (change 470k to R = 27k and decimal point position.
3: Peak digit current for an eight displayed is 7 times the segment current:
*To increase segment current capability, add two 75491 ICs between 14511B and resistor network.
The use of the 1413 as digit driver increases digit current capability over the 75492.
**V can range between -2.8V and -11V.
(B) LC Oscillator Circuit
10
LC
11
C
For L = 5mH and C = 0.01µF, f ≅ 32kHz10pF < C1 and C2 < 200pF
TC14433
TC14433
CLK1
C1
C2
CLK0
CLK1
CLK0
11
10
18M
47k
(A) Crystal Oscillator Circuit
f = 1
π
22/LC
TC14433/A
DS21394B-page 12
2002 Microchip Technology Inc.
FIGURE 4-4: DIGIT SELECT TIMING DIAGRAM
EOC 1/2 Clock Cycle
18 Clock Cycles
2 Clock Cycles
16,400 Clock Cycles
Between EOC Pulses
DS1
1/2 Digit
(MSD)
DS2
DS3
DS4
LCD
≈
2002 Microchip Technology Inc. DS21394B-page 13
TC14433/A
5.0 TYPICAL CHARACTERISTICS
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and areprovided for informationalpurposes only. Theperformancecharacteristics listed herein are
not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
ROLLOVER ERROR (IN LSD)
AT FULL SCALE
(PLUSE COUNT LESS MINUS COUNT)
-3
-2
-1
0
1
-4 -3 -2 -1
Typical Rollover Error vs. Power Supply Skew
(VDD I-IVEE I) - SUPPLY VOLTAGE SKEW (V)
01234
2
3
4
Note: Rollover Error is the Difference in Output
Reading for the same Analog Input Switched
from Positive to Negative.
0
1
2
3
4
5
01234 5
-40°C
+25°C
+85°C
Typical N-Channel Sink Current at V
DD
– V
SS
= 5 Volts
I
D
- SINK CURRENT (mA)
V
DS
- DRAIN TO SOURCE VOLTAGE (V
DC
)
1M
10k
10kΩ100kΩ1MΩ
100k
CLOCK FREQUENCY
16,400 ±1.5%
CONVERSION RATE =
Typical Clock Frequency vs. Resistor (RC)
ICLK - CLOCK FREQUENCY (Hz)
RC - CLOCK FREQUENCY RESISTOR
Note: ±5% Typical Variation over
Supply Voltage Range
of ±4.5V to ±8V
CLOCK FREQUENCY
80
MULTIPLEX RATE =
Typical Quiescent Power Supply Current vs.Temp.
IQ - QUIESCENT CURRENT (mA)
TA - TEMPERATURE (°C)
0
1
2
3
4
-40 -20 0 20 40 60 80 10
0
VEE = -8V
VDD = +8V
VEE = -5V
VDD = +5V
0
-1
-2
-3
0-1-2-3-4-5
Typical P-Channel Sink Current at V
DD
– V
SS
= 5 Volts
I
D
- SINK CURRENT (mA)
V
DS
- DRAIN TO SOURCE VOLTAGE (V
DC
)
-40°C
+25°C
+85°C
4
3
2
1
0
-1
-2
-3
-4
-40 -20 0 20 40 60 80
Normalized at 25°C
±5V Supply
±8V Supply
ICLK - CLOCK FREQUENCY
(% CHANGE)
Typical % Change fo Clock Frequency vs. Temp.
CLOCK FREQUENCY
16,400 ±1.5%
CONVERSION RATE =
CLOCK FREQUENCY
80
MULTIPLEX RATE =
TA - TEMPERATURE (°C)
TC14433/A
DS21394B-page 14
2002 Microchip Technology Inc.
6.0 PACKAGING INFORMATION
6.1 Package Marking Information
Package marking data not available at this time.
6.2 Taping Form
Component Taping Orientation for 24-Pin SOIC (Wide) Devices
PIN 1
User Direction of Feed
Standard Reel Component Orientation
for TR Suffix Device
W
P
Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size
24-Pin SOIC (W) 24 mm 12 mm 1000 13 in
Carrier Tape, Number of Components Per Reel and Reel Size
Component Taping Orientation for 28-Pin PLCC Devices
Standard Reel Component Orientation
for TR Suffix Device
User Direction of Feed
W
P
Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size
28-Pin PLCC 24 mm 16 mm 750 13 in
Carrier Tape, Number of Components Per Reel and Reel Size
PIN 1
2002 Microchip Technology Inc. DS21394B-page 15
TC14433/A
6.3 Package Dimensions
24-Pin PDIP (Wide)
Dimensions: inches (mm)
1.270 (32.26)
1.240 (31.50)
.555 (14.10)
.530 (13.46)
.040 (1.02)
.020 (0.51)
.200 (5.08)
.140 (3.56)
.022 (0.56)
.015 (0.38)
.110 (2.79)
.090 (2.29)
.070 (1.78)
.045 (1.14)
PIN 1
.150 (3.81)
.115 (2.92)
.015 (0.38)
.008 (0.20) 3°MIN.
.700 (17.78)
.610 (15.50)
.610 (15.49)
.590 (14.99)
24-Pin CERDIP (Wide)
Dimensions: inches (mm
)
.098 (2.49) MAX.
.540 (13.72)
.510 (12.95)
1.270 (32.26)
1.240 (31.50)
PIN 1
.210 (5.33)
.170 (4.32)
.020 (0.51)
.016 (0.41)
.065 (1.65)
.045 (1.14)
.110 (2.79)
.090 (2.29)
.060 (1.52)
.020 (0.51)
.015 (0.38)
.008 (0.20)
.620 (15.75)
.590 (15.00)
.200 (5.08)
.125 (3.18) .150 (3.81)
MIN.
.030 (0.76) MIN.
3° MIN.
.700 (17.78)
.620 (15.75)
TC14433/A
DS21394B-page 16
2002 Microchip Technology Inc.
Package Dimensions (Continued)
8°
MAX.
24-Pin SOIC (Wide)
.299 (7.59)
.291 (7.40)
.012 (0.30)
.004 (0.10)
.013 (0.33)
.009 (0.23)
.615 (15.62)
.597 (15.16)
.019 (0.48)
.014 (0.36)
.050 (1.27)
.016 (0.40)
.050 (1.27) TYP.
.419 (10.65)
.398 (10.10)
.104 (2.64)
.097 (2.46)
PIN 1
Dimensions: inches (mm)
28-Pin PLCC
Dimensions: inches (mm)
.456 (11.58)
.450 (11.43)
.495 (12.58)
.485 (12.32)
.456 (11.58)
.450 (11.43)
.495 (12.58)
.485 (12.32)
.050 (1.27) TYP.
PIN 1
.430 (10.92)
.390 (9.91)
.021 (0.53)
.013 (0.33)
.032 (0.81)
.026 (0.66)
.180 (4.57)
.165 (4.19)
.120 (3.05)
.090 (2.29)
.020 (0.51) MIN.
© 2002 Microchip Technology Inc. DS21394B-page 17
TC14433/A
SALES AND SUPPORT
Data Sheets
Products supported by a preliminary Data Sheet may have an errata sheet describing minor operational differences and recom-
mended workarounds. To determine if an errata sheet exists for a particular device, please contact one of the following:
1. Your local Microchip sales office
2. The Microchip Corporate Literature Center U.S. FAX: (480) 792-7277
3. The Microchip Worldwide Site (www.microchip.com)
Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using.
New Customer Notification System
Register on our web site (www.microchip.com/cn) to receive the most current information on our products.
TC14433/A
DS21394B-page 18 © 2002 Microchip Technology Inc.
NOTES:
2002 Microchip Technology Inc. DS21394B-page 19
TC14433/A
Information contained in this publication regarding device
applications and the like is intended through suggestion only
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
No representation or warranty is given and no liability is
assumed by Microchip Technology Incorporated with respect
to the accuracy or use of such information, or infringement of
patents or other intellectual property rights arising from such
use or otherwise. Use of Microchip’s products as critical com-
ponents in life support systems is not authorized except with
express written approval by Microchip. No licenses are con-
veyed, implicitly or otherwise, under any intellectual property
rights.
Trademarks
The Microchip name and logo, the Microchip logo, FilterLab,
KEELOQ,microID,MPLAB,PIC,PICmicro,PICMASTER,
PICSTART, PRO MATE, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip Tech-
nologyIncorporated in the U.S.A. and other countries.
dsPIC, ECONOMONITOR, FanSense, FlexROM, fuzzyLAB,
In-Circuit Serial Programming, ICSP, ICEPIC, microPort,
Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM,
MXDEV, MXLAB, PICC, PICDEM, PICDEM.net, rfPIC, Select
Mode and Total Endurance are trademarks of Microchip
Technology Incorporated in the U.S.A.
Serialized Quick Turn Programming (SQTP) is a service mark
of Microchip Technology Incorporated in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2002, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received QS-9000 quality system
certification for its worldwide headquarters,
design and wafer fabrication facilities in
Chandler and Tempe, Arizona in July 1999
and Mountain View, California in March 2002.
The Company’s quality system processes and
procedures are QS-9000 compliant for its
PICmicro®8-bit MCUs, KEELOQ®code hopping
devices, Serial EEPROMs, microperipherals,
non-volatile memory and analog products. In
addition, Microchip’s quality system for the
design and manufacture of development
systems is ISO 9001 certified.
DS21394B-page 20
2002 Microchip Technology Inc.
AMERICAS
Corporate Office
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200 Fax: 480-792-7277
Technical Support: 480-792-7627
Web Address: http://www.microchip.com
Rocky Mountain
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Chandler, AZ 85224-6199
Tel: 480-792-7966 Fax: 480-792-7456
Atlanta
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Tel: 770-640-0034 Fax: 770-640-0307
Boston
2 Lan Drive, Suite 120
Westford, MA 01886
Tel: 978-692-3848 Fax: 978-692-3821
Chicago
333 Pierce Road, Suite 180
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Tel: 630-285-0071 Fax: 630-285-0075
Dallas
4570 Westgrove Drive, Suite 160
Addison, TX 75001
Tel: 972-818-7423 Fax: 972-818-2924
Detroit
Tri-Atria Office Building
32255 Northwestern Highway, Suite 190
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Tel: 248-538-2250 Fax: 248-538-2260
Kokomo
2767 S. Albright Road
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Tel: 765-864-8360 Fax: 765-864-8387
Los Angeles
18201 Von Karman, Suite 1090
Irvine, CA 92612
Tel: 949-263-1888 Fax: 949-263-1338
New York
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Tel: 631-273-5305 Fax: 631-273-5335
San Jose
Microchip Technology Inc.
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San Jose, CA 95131
Tel: 408-436-7950 Fax: 408-436-7955
Toronto
6285 Northam Drive, Suite 108
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Tel: 905-673-0699 Fax: 905-673-6509
ASIA/PACIFIC
Australia
Microchip Technology Australia Pty Ltd
Suite 22, 41 Rawson Street
Epping 2121, NSW
Australia
Tel: 61-2-9868-6733 Fax: 61-2-9868-6755
China - Beijing
Microchip Technology Consulting (Shanghai)
Co., Ltd., Beijing Liaison Office
Unit 915
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No. 6 Chaoyangmen Beidajie
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Tel: 86-10-85282100 Fax: 86-10-85282104
China - Chengdu
Microchip Technology Consulting (Shanghai)
Co., Ltd., Chengdu Liaison Office
Rm. 2401, 24th Floor,
Ming Xing Financial Tower
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Chengdu 610016, China
Tel: 86-28-86766200 Fax: 86-28-86766599
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Co., Ltd., Fuzhou Liaison Office
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Co., Ltd.
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Co., Ltd., Shenzhen Liaison Office
Rm. 1315, 13/F, Shenzhen Kerry Centre,
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Tel: 86-755-2350361 Fax: 86-755-2366086
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Tel: 852-2401-1200 Fax: 852-2401-3431
India
Microchip Technology Inc.
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Divyasree Chambers
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Tel: 91-80-2290061 Fax: 91-80-2290062
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Tel: 81-45-471- 6166 Fax: 81-45-471-6122
Korea
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Tel: 82-2-554-7200 Fax: 82-2-558-5934
Singapore
Microchip Technology Singapore Pte Ltd.
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#07-02 Prime Centre
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Tel: 65-6334-8870 Fax: 65-6334-8850
Taiwan
Microchip Technology Taiwan
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Tel: 886-2-2717-7175 Fax: 886-2-2545-0139
EUROPE
Denmark
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Regus Business Centre
Lautrup hoj 1-3
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Tel: 45 4420 9895 Fax: 45 4420 9910
France
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91300 Massy, France
Tel: 33-1-69-53-63-20 Fax: 33-1-69-30-90-79
Germany
Microchip Technology GmbH
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D-81739 Munich, Germany
Tel: 49-89-627-144 0 Fax: 49-89-627-144-44
Italy
Microchip Technology SRL
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Tel: 39-039-65791-1 Fax: 39-039-6899883
United Kingdom
Microchip Ltd.
505 Eskdale Road
Winnersh Triangle
Wokingham
Berkshire, England RG41 5TU
Tel: 44 118 921 5869 Fax: 44-118 921-5820
05/01/02
*DS21394B*
WORLDWIDE SALES AND SERVICE
