Texas Instruments AM26LS31CNSR, AM26LS31CNS, AM26LS31CN, AM26LS31CDR, AM26LS31CD Datasheet
AM26LS31C
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS114D – JANUARY 1979 – REVISED OCT OBER 1998
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Meets or Exceeds the Requirements of
ANSI TIA/EIA-422-B and ITU
Recommendation V.1 1
D
Operates From a Single 5-V Supply
D
TTL Compatible
D
Complementary Outputs
D
High Output Impedance in Power-Off
Conditions
D
Complementary Output-Enable Inputs
description
The AM26LS31C is a quadruple complementary-output line driver designed to meet the requirements of
ANSI TIA/EIA-422-B and ITU (formerly CCITT) Recommendation V .11. The 3-state outputs have high-current
capability for driving balanced lines such as twisted-pair or parallel-wire transmission lines, and they provide
a high-impedance state in the power-off condition. The enable function is common to all four drivers and offers
the choice of an active-high or active-low enable (G, G
) input. Low-power Schottky circuitry reduces power
consumption without sacrificing speed.
The AM26LS31C is characterized for operation from 0°C to 70°C.
FUNCTION TABLE
(each driver)
INPUT
ENABLES OUTPUTS
A
G G Y Z
H H X H L
L H XLH
H XLHL
L XLLH
X LHZZ
H = high level, L = low level, X = irrelevant,
Z = high impedance (off)
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
1A
1Y
1Z
G
2Z
2Y
2A
GND
V
CC
4A
4Y
4Z
G
3Z
3Y
3A
D OR N PACKAGE
(TOP VIEW)
AM26LS31C
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS114D – JANUARY 1979 – REVISED OCT OBER 1998
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic symbol
†
4
G
12
1Y
2
1Z
3
1
1A
≥1
EN
2Y
6
2Z
5
7
2A
3Y
10
3Z
11
9
3A
4Y
14
4Z
13
15
4A
G
logic diagram (positive logic)
1Z
1Y
G
G
1A
4
12
1
2
3
2Z
2Y
2A
7
6
5
3Z
3Y
3A
9
10
11
4Z
4Y
4A
15
14
13
AM26LS31C
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS114D – JANUARY 1979 – REVISED OCT OBER 1998
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
schematic (each driver)
22 kΩ
To Three Other Drivers
Common to All Four Drivers
GND
Enable G
Enable G
V
CC
V
V
Output Y
9 Ω
Input A
22 kΩ
22 kΩ
All resistor values are nominal.
Output Z
9 Ω
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
(see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output off-state voltage 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): D package 113°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
N package 78°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
–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 affect device reliability.
NOTES: 1. All voltage values, except differential output voltage VOD, are with respect to network GND.
2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace
length of zero.
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