AM26LS31C, AM26LS31M
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS114H – JANUARY 1979 – REVISED JULY 2002
D
D
D
D
D
D
Meets or Exceeds the Requirements of
ANSI TIA/EIA-422-B and ITU
Recommendation V.11
Operates From a Single 5-V Supply
TTL Compatible
Complementary Outputs
High Output Impedance in Power-Off
Conditions
Complementary Output-Enable Inputs
D, DB, N, NS, OR J PACKAGE
(TOP VIEW)
1A
1Y
1Z
G
2Z
2Y
2A
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
4A
4Y
4Z
G
3Z
3Y
3A
description/ordering information
The
AM26LS31
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 are in
the 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.
FK PACKAGE
(TOP VIEW)
V CC
3A
NC
1
1Y
1A
3
2
20 19
18
4Y
17
4Z
16
NC
15
G
14
3Z
1Z
G
NC
2Z
2Y
4
5
6
7
8
9
10 11 12 13
2A
ORDERING INFORMATION
TA
PDIP – N
0°C to 70°C
SOIC – D
SOP – NS
SSOP – DB
– 55°C to 125°C
CDIP – J
LCCC – FK
PACKAGE†
Tube
Tube
Tape and reel
Tape and reel
Tape and reel
Tube
Tube
ORDERABLE
PART NUMBER
AM26LS31CN
AM26LS31CD
AM26LS31CDR
AM26LS31CNSR
AM26LS31CDBR
AM26LS31MJ
AM26LS31MFK
TOP-SIDE
MARKING
AM26LS31CN
AM26LS31C
26LS31
SA31C
AM26LS31MJB
AM26LS31MFKB
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
Copyright
2002, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
GND
NC
3Y
4A
1
AM26LS31C, AM26LS31M
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS114H – JANUARY 1979 – REVISED JULY 2002
FUNCTION TABLE
(each driver)
INPUT
A
H
L
H
L
X
ENABLES
G
H
H
X
X
L
G
X
X
L
L
H
OUTPUTS
Y
H
L
H
L
Z
Z
L
H
L
H
Z
H = high level, L = low level, X = irrelevant,
Z = high impedance (off)
logic diagram (positive logic)
G
G
1A
4
12
2
1
3
6
2A
7
5
10
3A
9
11
14
4A
15
13
1Y
1Z
2Y
2Z
3Y
3Z
4Y
4Z
2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
AM26LS31C, AM26LS31M
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS114H – JANUARY 1979 – REVISED JULY 2002
schematic (each driver)
Input A
V
22 kΩ
9
Ω
Output Y
9
Ω
Output Z
Common to All Four Drivers
VCC
V
22 kΩ
22 kΩ
Enable G
Enable G
To Three Other Drivers
GND
All resistor values are nominal.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
AM26LS31C, AM26LS31M
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS114H – JANUARY 1979 – REVISED JULY 2002
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82°C/W
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package . . . . . . . . . . . . . . . . . . . . . 300°C
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°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 51-7.
DISSIPATION RATING TABLE
PACKAGE
FK
J
TA
≤
25°C
POWER RATING
1375 mW
1375 mW
DERATING FACTOR
ABOVE TA = 25°C‡
11.0 mW/°C
11.0 mW/°C
TA = 70°C
POWER RATING
880 mW
880 mW
TA = 125°C
POWER RATING
275 mW
275 mW
‡ This is the inverse of the traditional junction-to-ambient thermal resistance (RθJA). Thermal resistances are not
production tested and the values given are for informational purposes only.
recommended operating conditions
MIN
VCC
VIH
VIL
IOH
IOL
TA
Supply voltage
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Operating free air temperature
free-air
AM26LS31C
AM26LS31M
0
–55
AM26LS31C
AM26LS31M
4.75
4.5
2
0.8
–20
20
70
125
NOM
5
5
MAX
5.25
5.5
UNIT
V
V
V
mA
mA
°C
4
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
AM26LS31C, AM26LS31M
QUADRUPLE DIFFERENTIAL LINE DRIVER
SLLS114H – JANUARY 1979 – REVISED JULY 2002
electrical characteristics over operating free-air temperature range (unless otherwise noted)
†
PARAMETER
VIK
VOH
VOL
IOZ
II
IIH
IIL
IOS
Input clamp voltage
High level output voltage
High-level
Low-level output voltage
Off-state (high impedance state)
Off state (high-impedance-state) output current
Input current at maximum input voltage
High-level input current
Low-level input current
Short-circuit output current§
VCC = MIN,
VCC = MIN,
,
IOH = –20 mA
VCC = MIN,
VCC = MIN
VCC = MAX,
VCC = MAX,
VCC = MAX,
VCC = MAX
TEST CONDITIONS
II = –18 mA
TA = –55°C
All other temperatures
IOL = 20 mA
VO = 0.5 V
VO = 2.5 V
VI = 7 V
VI = 2.7 V
VI = 0.4 V
–30
MIN
2.4
2.5
0.5
–20
20
0.1
20
–0.36
–150
TYP‡
MAX
–1.5
UNIT
V
V
V
µA
mA
µA
mA
mA
mA
ICC
Supply current
VCC = MAX,
All outputs disabled
32
80
† For C suffix devices, VCC MIN = 4.75 V and VCC MAX = 5.25 V. For M suffix devices, VCC MIN = 4.5 V and VCC MAX = 5.5 V.
‡ All typical values are at VCC = 5 V and TA = 25°C.
§ Not more than one output should be shorted at a time, and duration of the short circuit should not exceed one second.
switching characteristics, V
CC
= 5 V, T
A
= 25°C (see Figure 1)
PARAMETER
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Propagation delay time, low-to-high-level output
Propagation delay time, high-to-low-level output
Output enable time to high level
Output enable time to low level
Output disable time from high level
Output disable time from low level
Output-to-output skew
TEST CONDITIONS
CL = 30 pF
pF,
CL = 30 pF
CL = 10 pF
pF,
CL = 30 pF,
S1 and S2 open
RL = 75
Ω
RL = 180
Ω
S1 and S2 closed
S1 and S2 open
MIN
TYP
14
14
25
37
21
23
1
MAX
20
20
40
45
30
35
6
UNIT
ns
ns
ns
ns
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
5
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