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Rev.1.00 Aug. 23, 2004 page 1 of 6
HD74LV138A
3-to-8-line Decoder / Demultiplexer
REJ03D0384–0100
Rev.1.00
Aug. 23, 2004
Description
The HD74LV138A has three binary select inputs in a 16 pin package. If the device is enabled these inputs determine
which one of the eight normally high outputs will go low. Two active low and one active high enables are provided to
ease the cascading of decoders. Low voltage and high-speed operation is suitable at the battery drive product (note type
personal computer) and low power consumption extends the life of a battery for long time operation.
Features
VCC = 2.0 V to 5.5 V
All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)
All outputs VO (Max.) = 5.5 V (@VCC = 0 V)
Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
Typical VOH undershoot > 2.3 V (@ VCC = 3.3 V, Ta = 25°C)
High output current ±6 mA (@VCC = 3.0 V to 3.6 V), ±12 mA (@VCC = 4.5 V to 5.5 V)
Ordering Information
Part Name Package Type Package Code Package
Abbreviation Taping Abbreviation
(Quantity)
HD74LV138AFPEL SOP–16 pin (JEITA) FP–16DAV FP EL (2,000 pcs/reel)
HD74LV138ATELL TSSOP–16 pin TTP–16DAV T ELL (2,000 pcs/reel)
Note: Please consult the sales office for the above package availability.
Function Table
Inputs
Enable Select Outputs
G1 G2A G2B C B A Y0Y1Y2Y3Y4Y5Y6Y7
XXHXXXHHHHHHHH
XHXXXXHHHHHHHH
LXXXXXHHHHHHHH
HLLLLLLHHHHHHH
HLLLLHHLHHHHHH
HLLLHLHHLHHHHH
HLLLHHHHHLHHHH
HLLHLLHHHHLHHH
HLLHLHHHHHHLHH
HLLHHLHHHHHHLH
HLLHHHHHHHHHHL
H: High level
L: Low level
X: Immaterial
HD74ALV138A
Rev.1.00 Aug. 23.2004, page 2 of 6
Pin Arrangement
(Top view)
11
12
13
14
V
CC
1
2
3
4
5
6
710
A
GND 89
15
16
A
B
C
Y7
G1
G2B
G2A
Y0
Y1
Y2
Y3
Y4
Y5
B
C
G2A
G2B
G1
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Y6
Absolute Maximum Ratings
Item Symbol Ratings Unit Conditions
Supply voltage range VCC –0.5 to 7.0 V
Input voltage range*1VI–0.5 to 7.0 V
–0.5 to VCC + 0.5 Output: H or LOutput voltage range*1, 2 VO–0.5 to 7.0 VVCC: OFF
Input clamp current IIK –20 mA VI < 0
Output clamp current IOK ±50 mA VO < 0 or VO > VCC
Continuous output current IO±25 mA VO = 0 to VCC
Continuous current through
VCC or GND ICC or IGND ±50 mA
785 SOPMaximum power dissipation at
Ta = 25°C (in still air)*3PT500 mW TSSOP
Storage temperature Tstg –65 to 150 °C
Notes: The absolute maximum ratings are values, which must not individually be exceed ed, and furthermore, no two of
which may be realized at the same time.
1. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are
observed.
2. This value is limited to 5.5 V maximum.
3. The maximum package power dissipation was calculated using a junction temperature of 150°C.
HD74ALV138A
Rev.1.00 Aug. 23.2004, page 3 of 6
Recommended Operating Conditions
Item Symbol Min Max Unit Conditions
Supply voltage range VCC 2.0 5.5 V
Input voltage range VI05.5V
Output voltage range VO0V
CC V
–50 µAV
CC = 2.0 V
—–2 V
CC = 2.3 to 2.7 V
—–6 V
CC = 3.0 to 3.6 V
IOH
–12
mA
VCC = 4.5 to 5.5 V
—50µAV
CC = 2.0 V
—2 V
CC = 2.3 to 2.7 V
—6 V
CC = 3.0 to 3.6 V
Output current
IOL
—12
mA
VCC = 4.5 to 5.5 V
0 200 VCC = 2.3 to 2.7 V
0 100 VCC = 3.0 to 3.6 V
Input transition rise or fall rate t /v
020
ns/V
VCC = 4.5 to 5.5 V
Operating free-air temperature Ta –40 85 °C
Note: Unused or floating inputs must be held high or low.
DC Electrical Characteristics
Ta = –40 to 85°C
Item Symbol VCC (V)* Min Typ Max Unit Test Conditions
2.0 1.5
2.3 to 2.7 VCC× 0.7
3.0 to 3.6 VCC× 0.7
VIH
4.5 to 5.5 VCC× 0.7
2.0 0.5
2.3 to 2.7 VCC× 0.3
3.0 to 3.6 VCC× 0.3
Input voltage
VIL
4.5 to 5.5 VCC× 0.3
V
Min to Max VCC – 0.1 IOH = –50 µA
2.3 2.0 IOH = –2 mA
3.0 2.48 IOH = –6 mA
VOH
4.5 3.8 IOH = –12 mA
Min to Max 0.1 IOL = 50 µA
2.3 0.4 IOL = 2 mA
3.0 0.44 IOL = 6 mA
Output voltage
VOL
4.5 0.55
V
IOL = 12 mA
Input current IIN 0 to 5.5 ±1 µAV
IN = 5.5 V or GND
Quiescent supply
current ICC 5.5 20 µAV
IN = VCC or GND, IO = 0
Output leakage
current IOFF 0—5µAV
I or VO = 0 V to 5.5 V
Input capacitance CIN 3.3 3.3 pF VI = VCC or GND
Note: For conditions shown as Min or Max, use the appropriate values under recommended operating con ditions.
HD74ALV138A
Rev.1.00 Aug. 23.2004, page 4 of 6
Switching Characteristics
VCC = 2.5 ± 0.2 V
Ta = 25°C Ta = –40 to 85°C
Item Symbol Min Typ Max Min Max Unit Test
Conditions FROM
(Input) TO
(Output)
7.5 17.6 1.0 21.0 CL = 15 pF
10.0 21.4 1.0 25.0 CL = 50 pF A, B or C
7.5 19.2 1.0 22.0 CL = 15 pF
10.0 22.6 1.0 26.0 CL = 50 pF G1
8.0 18.2 1.0 21.0 CL = 15 pF
Propagation
delay time tPLH/tPHL
10.5 22.0 1.0 25.0
ns
CL = 50 pF
G2A or G2B
Y
VCC = 3.3 ± 0.3 V
Ta = 25°C Ta = –40 to 85°C
Item Symbol Min Typ Max Min Max Unit Test
Conditions FROM
(Input) TO
(Output)
5.5 11.4 1.0 13.5 CL = 15 pF
7.5 15.8 1.0 18.0 CL = 50 pF A, B or C
5.5 12.8 1.0 15.0 CL = 15 pF
7.5 16.3 1.0 18.5 CL = 50 pF G1
6.0 11.4 1.0 13.5 CL = 15 pF
Propagation
delay time tPLH/tPHL
7.5 14.9 1.0 17.0
ns
CL = 50 pF
G2A or G2B
Y
VCC = 5.0 ± 0.5 V
Ta = 25°C Ta = –40 to 85°C
Item Symbol Min Typ Max Min Max Unit Test
Conditions FROM
(Input) TO
(Output)
4.0 8.1 1.0 9.5 CL = 15 pF
5.5 10.1 1.0 11.5 CL = 50 pF A, B or C
4.0 8.1 1.0 9.5 CL = 15 pF
5.5 10.1 1.0 11.5 CL = 50 pF G1
4.5 8.1 1.0 9.5 CL = 15 pF
Propagation
delay time tPLH/tPHL
5.5 10.1 1.0 11.5
ns
CL = 50 pF
G2A or G2B
Y
Operating Characteristics
CL = 50 pF
Ta = 25°C
Item Symbol VCC (V) Min Typ Max Unit Test Conditions
3.3 16.8 Power dissipation capacitanc e CPD 5.0 19.1 pF f = 10 MHz
HD74ALV138A
Rev.1.00 Aug. 23.2004, page 5 of 6
Noise Characteristics
CL = 50 pF
Ta = 25°C
Item Symbol VCC (V) Min Typ Max Unit Test Conditions
Quiet output, maximum
dynamic VOL
VOL (P) 3.3 0.3 0.8 V
Quiet output, minimum
dynamic VOL
VOL (V) 3.3 –0.2 –0.8 V
Quiet output, minimum
dynamic VOH
VOH (V) 3.3 3.0 V
High-level dynamic input
voltage VIH (D) 3.3 2.31 V
Low-level dynamic inpu t
voltage VIL (D) 3.3——0.99V
Test Circuit
L*
C includes the probe and fig capacitance.Note:
Measurement point
C
L
t
PLH
t
PHL
V
OH
V
OL
0 V
V
CC
V
OH
V
OL
t
PHL
t
PLH
10%
90%
50% V
CC
50% V
CC
50% V
CC
50% V
CC
50% V
CC
50% V
CC
10%
90%
Waveform
Input
In phase output
Out of phase output
t
r
t
f
1. Input waveform: PRR 1 MHz, Zo = 50 , t 3 ns, t 3 ns
2. The output are measured one at a time with one transition per measurement.
Notes:
rf
HD74ALV138A
Rev.1.00 Aug. 23.2004, page 6 of 6
Package Dimensions
Package Code
JEDEC
JEITA
Mass
(reference value)
FP-16DAV
Conforms
0.24 g
*Ni/Pd/Au plating
*0.20 ± 0.05
*0.40 ± 0.06
0.12
0.15
M
2.20 Max 5.5
10.06
0.80 Max
16 9
18
10.5 Max
+ 0.20
– 0.30
7.80
0.70 ± 0.20
0˚ – 8˚
0.10 ± 0.10
1.15
1.27
As of January, 2003
Unit: mm
Package Code
JEDEC
JEITA
Mass
(reference value)
TTP-16DAV
0.05 g
*Ni/Pd/Au plating
0.50 ± 0.10
0˚ – 8˚
*0.15 ± 0.05
6.40 ± 0.20
0.10
1.10 Max
0.13 M
0.65
18
16 9
4.40
5.00
5.30 Max
0.07
+0.03
–0.04
0.65 Max
1.0
*0.20 ± 0.05
As of January, 2003
Unit: mm
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