AM26C32C, AM26C32I, AM26C32M
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS104F – DECEMBER 1990 – REVISED APRIL 1998
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Meet or Exceed the Requirements of ANSI
EIA/TIA-422-B, EIA/TIA-423-B, and ITU
Recommendation V.10 and V.11
D
Low Power, ICC = 10 mA Typ
D
±7-V Common-Mode Range With ±200-mV
Sensitivity
D
Input Hysteresis...60 mV Typ
D
t
pd = 17 ns Typ
D
Operate From a Single 5-V Supply
D
3-State Outputs
D
Input Fail-Safe Circuitry
D
Improved Replacements for AM26LS32
description
The AM26C32C, AM26C32I, and AM26C32M are
quadruple differential line receivers for balanced
or unbalanced digital data transmission. The
enable function is common to all four receivers
and offers a choice of active-high or active-low
input. The 3-state outputs permit connection
directly to a bus-organized system. Fail-safe
design specifies that if the inputs are open, the
outputs are always high.
The AM26C32 is manufactured using a BiCMOS
process, which is a combination of bipolar and
CMOS transistors. This process provides the high
voltage and current of bipolar with the low power
of CMOS to reduce the power consumption to
about one-fifth that of the standard AM26LS32
while maintaining ac and dc performance.
The AM26C32C is characterized for operation from 0°C to 70°C. The AM26C32I is characterized for operation
from –40°C to 85°C. The AM26C32M is characterized for operation from –55°C to 125°C.
Copyright 1998, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1B
1A
1Y
G
2Y
2A
2B
GND
VCC
4B
4A
4Y
G
3Y
3A
3B
AM26C32C, AM26C32I ... D OR N PACKAGE
AM26C32M ...J OR W PACKAGE
(TOP VIEW)
3212019
910111213
4
5
6
7
8
18
17
16
15
14
4A
4Y
NC
G
3Y
1Y
G
NC
2Y
2A
FK PACKAGE
(TOP VIEW)
1A
1B
NC
3B
3A 4B
2B
GND
NC
NC – No internal connection
CC
V
AM26C32C, AM26C32I, AM26C32M
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS104F – DECEMBER 1990 – REVISED APRIL 1998
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
FUNCTION TABLE
(each receiver)
DIFFERENTIAL ENABLES
OUTPUT
INPUT G G
OUTPUT
VID ≥VIT
H X H
V
ID
≥
V
IT+ XLH
V
IT <VID<VIT
HX?
V
IT– <
V
ID <
V
IT+ XL?
V
ID ≤VIT
HXL
V
ID
≤
V
IT– XLL
X LHZ
H = high level, L = low level, X = irrelevant
Z = high impedance (off), ? = indeterminate
logic symbol†
4Y
3Y
2Y
1Y
13
11
5
3
4B
4A
3B
3A
2B
2A
1B
1A
G
G
15
14
9
10
7
6
1
2
12
4EN
≥1
†This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for the D, J, N, and W packages.
AM26C32C, AM26C32I, AM26C32M
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS104F – DECEMBER 1990 – REVISED APRIL 1998
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
4Y
3Y
2Y
1Y
13
11
5
3
4B
4A
3B
3A
2B
2A
1B
1A
G
G
15
14
9
10
7
6
1
2
12
4
Pin numbers shown are for the D, J, N, and W packages.
schematics
Input
VCC
EQUIVALENT OF A OR B INPUT TYPICAL OF ALL OUTPUTS
Output
VCC
VCC
1.7 kΩ
NOM
GND GND
1.7 kΩ
NOM
17 kΩ
NOM
288 kΩ
NOM
VCC(A)
or
GND(B)
Input
GND
EQUIVALENT OF G OR G INPUT
AM26C32C, AM26C32I, AM26C32M
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS104F – DECEMBER 1990 – REVISED APRIL 1998
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC (see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, VI: A or B inputs –11 V to 14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G or G inputs –0.5 V to VCC + 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage range, VID –14 V to 14 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, VO –0.5 V to VCC + 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, IO ±25 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds 260°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond 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 beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may af fect device reliability.
NOTE 1: All voltage values, except differential output voltage, VOD, are with respect to network GND. Currents into the device are positive and
currents out of the device are negative.
DISSIPATION RATING TABLE
PACKAGE TA ≤ 25°C
POWER RATING DERATING FACTOR
ABOVE TA = 25°CTA = 70°C
POWER RATING TA = 85°C
POWER RATING TA = 125°C
POWER RATING
D950 mW 7.6 mW/°C 608 mW 494 mW —
N 1150 mW 9.2 mW/°C 736 mW 598 mW —
J1375 mW 11 mW/°C — — 275 mW
W1000 mW 8.0 mW/°C — — 200 mW
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, VCC 4.5 5 5.5 V
High-level input voltage, VIH 2 V
Low-level input voltage, VIL 0.8 V
Common-mode input voltage, VIC ±7 V
High-level output current, IOH –6 mA
Low-level output current, IOL 6mA
AM26C32C 0 70
Operating free-air temperature, TAAM26C32I –40 85 °C
AM26C32M –55 125
AM26C32C, AM26C32I, AM26C32M
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS104F – DECEMBER 1990 – REVISED APRIL 1998
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of VCC, VIC, and operating free-air
temperature (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP†MAX UNIT
VIT
Differential in
p
ut high threshold voltage
V
O
= V
OH
min, VIC = full range 0.2
V
V
IT+
Differential
inp
u
t
high
-
threshold
v
oltage
OOH,
IOH = –440 µAVIC = 0 to 5.5 V 0.1
V
VIT
Differential in
p
ut low threshold voltage
V
O
= 0.45 V, VIC = full range –0.2‡
V
V
IT–
Differential
inp
u
t
lo
w-
threshold
v
oltage
O,
IOL = 8 mA VIC = 0 to 5.5 V –0.1‡
V
Vhys Hysteresis voltage (VIT+ – VIT–)60 mV
VIK Enable input clamp voltage VCC = 4.5 V, II = –18 mA –1.5 V
VOH High-level output voltage VID = 200 mV, IOH = –6 mA 3.8 V
VOL Low-level output voltage VID = –200 mV, IOL = 6 mA 0.2 0.3 V
IOZ Off-state (high-impedance-state) output current VO = VCC or GND ±0.5 ±5µA
II
Line in
p
ut current
VI = 10 V, Other input at 0 V 1.5
mA
I
I
Line
inp
u
t
c
u
rrent
VI = –10 V, Other input at 0 V –2.5
mA
IIH High-level enable current VI = 2.7 V 20 µA
IIL Low-level enable current VI = 0.4 V –100 µA
riInput resistance One input to ground 12 17 kΩ
ICC Supply current VCC = 5.5 V 10 15 mA
†All typical values are at VCC = 5 V, VIC = 0, and TA = 25°C.
‡The algebraic convention, in which the less positive (more negative) limit is designated minimum, is used in this data sheet for common-mode
input voltage.
switching characteristics over recommended ranges of operation conditions, CL = 50 pF (unless
otherwise noted)
PARAMETER TEST
CONDITIONS
AM26C32C
AM26C32I AM26C32M UNIT
CONDITIONS
MIN TYP§MAX MIN TYP§MAX
tPLH Propagation delay time, low- to high-level output
See Figure 1
9 17 27 9 17 27 ns
tPHL Propagation delay time, high- to low-level output
See
Fig
u
re
1
9 17 27 9 17 27 ns
tTLH Output transition time, low- to high-level output
See Figure 1
4 9 4 10 ns
tTHL Output transition time, high- to low-level output
See
Fig
u
re
1
4 9 4 9 ns
tPZH Output enable time to high level
See Figure 2
13 22 13 22 ns
tPZL Output enable time to low level
See
Fig
u
re
2
13 22 13 22 ns
tPHZ Output disable time from high level
See Figure 2
13 22 13 26 ns
tPLZ Output disable time from low level
See
Fig
u
re
2
13 22 13 25 ns
§All typical values are at VCC = 5 V, TA = 25°C.
AM26C32C, AM26C32I, AM26C32M
QUADRUPLE DIFFERENTIAL LINE RECEIVERS
SLLS104F – DECEMBER 1990 – REVISED APRIL 1998
6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
PARAMETER MEASUREMENT INFORMATION
TEST CIRCUIT VOLTAGE WAVEFORMS
0 V
Output VOH
VOL
10%
90%90%
10%
tTLH tTHL
tPLH tPHL
2.5 V
±2.5 V
50%
Input
Device
Under
Test
A
B
VCC
CL = 50 pF
(see Note A)
Input
NOTE A: CL includes probe and jig capacitance.
Figure 1. Switching Test Circuit and Voltage Waveforms
TEST CIRCUIT
Device
Under
Test
G Input
G Input
VCC S1
RL = 1 kΩ
CL = 50 pF
(see Note A)
VID = ±2.5 V
VOLTAGE WAVEFORMS
tPZL, tPLZ Measurement: S1 to VCC
tPZH, tPHZ Measurement: S1 to GND
1.3 VG
G
(see Note B)
Output
(with VID = 2.5 V)
Output
(with VID = –2.5 V)
tPZH tPHZ tPZH tPHZ
tPZL tPLZ tPZL tPLZ
VOH –0.5 V
VOL + 0.5 V
VOH –0.5 V
VOL + 0.5 V
3 V
0 V
3 V
0 V
VOH
VOL
VOH
VOL
1.3 V
50%
50%
A Input
B Input
NOTES: A. CL includes probe and jig capacitance.
B. The input pulse is supplied by a generator having the following characteristics: PRR = 1 MHz, duty cycle ≤ 50%, tr = tf = 6 ns.
Figure 2. Enable/Disable Time Test Circuit and Output Voltage Waveforms
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Copyright 1998, Texas Instruments Incorporated
