AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998
D D D D D D
D OR N PACKAGE (TOP VIEW)
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
1A 1Y 1Z G 2Z 2Y 2A GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
VCC 4A 4Y 4Z G 3Z 3Y 3A
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 A
ENABLES
OUTPUTS
G
G
Y
Z
H
H
X
H
L H
L
H
X
L
H
X
L
H
L
L
X
L
L
H
X
L
H
Z
Z
H = high level, L = low level, X = irrelevant, Z = high impedance (off)
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 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.
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AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998
logic symbol† ≥1
4
G
EN
12
G
2
1
1A
3 6
7
2A
5 10
9
3A
11 14
15
4A
13
1Y 1Z 2Y 2Z 3Y 3Z 4Y 4Z
logic diagram (positive logic) G G
4 12 2
1A
1
3 6
2A
7
5 10
3A
9
11 14
4A
2
15
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1Y 1Z 2Y 2Z 3Y 3Z 4Y 4Z
AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998
schematic (each driver) Input A
V
22 kΩ
9Ω
9Ω
Output Z
Output Y
Common to All Four Drivers VCC V
22 kΩ 22 kΩ
To Three Other Drivers
Enable G Enable G
GND
All resistor values are nominal.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Output off-state voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78°C/W 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 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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AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998
recommended operating conditions (unless otherwise noted) Supply voltage, VCC High-level input voltage, VIH
MIN
NOM
MAX
UNIT
4.75
5
5.25
V
2
V
Low-level input voltage, VIL
0.8
V
High-level output current, IOH
–20
mA
Low-level output current, IOL
20
mA
70
°C
Operating free-air temperature, TA
0
electrical characteristics over operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH
Input clamp voltage
VOL
TEST CONDITIONS
High-level output voltage
VCC = 4.75 V, VCC = 4.75 V,
II = –18 mA IOH = –20 mA
Low-level output voltage
VCC = 4.75 V,
IOL = 20 mA VO = 0.5 V
IOZ
Off state (high-impedance-state) Off-state (high impedance state) output current
VCC = 4 4.75 75 V
II IIH
Input current at maximum input voltage High-level input current
VCC = 5.25 V, VCC = 5.25 V,
IIL
Low-level input current
VCC = 5.25 V,
IOS
Short-circuit output current‡
VCC = 5.25 V
MIN
TYP†
MAX
UNIT
–1.5
V
2.5
V 0.5 –20
VO = 2.5 V VI = 7 V
20
VI = 2.7 V VI = 0.4 V –30
ICC Supply current VCC = 5.25 V, All outputs disabled 32 † 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.
V µA
0.1
mA
20
µA
–0.36
mA
–150
mA
80
mA
switching characteristics, VCC = 5 V, TA = 25°C (see Figure 1) PARAMETER Propagation delay time, low-to-high-level output
tPZH tPZL
Output enable time to high level
tPHZ tPLZ
Output disable time from high level
Propagation delay time, high-to-low-level output Output enable time to low level Output disable time from low level Output-to-output skew
4
TEST CONDITIONS
tPLH tPHL
pF CL = 30 pF, CL = 30 pF
TYP
MAX
14
20
14
20
RL = 75 Ω
25
40
RL = 180 Ω
37
45
21
30
23
35
1
6
S1 and S2 open
CL = 10 pF, pF
S1 and S2 closed
CL = 30 pF,
S1 and S2 open
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MIN
UNIT ns ns ns ns
AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998
PARAMETER MEASUREMENT INFORMATION Input A (see Notes B and C) Test Point
3V 1.3 V
1.3 V 0V
VCC
tPLH
tPHL
180 Ω
VOH 1.5 V
Output Y
S1 From Output Under Test
VOL Skew
75 Ω
CL (see Note A)
Skew tPLH
tPHL
S2
VOH 1.5 V
Output Z
VOL PROPAGATION DELAY TIMES AND SKEW
Enable G (see Note D) Enable G
TEST CIRCUIT
3V 1.5 V
1.5 V
See Note D
0V tPZL
tPLZ ≈4.5 V
Waveform 1 (see Note E)
S1 Closed S2 Open
S1 Closed S2 Closed ≈1.5 V
1.5 V
VOL 0.5 V
tPZH
tPHZ 0.5 V
Waveform 2 (see Note E)
S1 Open S2 Closed
1.5 V
VOH ≈1.5 V ≈0 V
S1 Closed S2 Closed
ENABLE AND DISABLE TIME WAVEFORMS NOTES: A. B. C. D. E.
CL includes probe and jig capacitance. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO ≈ 50 Ω, tr ≤ 15 ns, tf ≤ 6 ns. When measuring propagation delay times and skew, switches S1 and S2 are open. Each enable is tested separately. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
Figure 1. Test Circuit and Voltage Waveforms
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AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998
TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE
4
VO – Y Output Voltage – V
Load = 470 Ω to GND TA = 25°C See Note A
3
ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ
ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ
4
VCC = 5 V Load = 470 Ω to GND See Note A
VCC = 5.25 V VCC = 5 V
3
VO – Y Output Voltage – V
ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ
OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE
VCC = 4.75 V
2
1
TA = 25°C
ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ TA = 70°C
TA = 0°C
2
1
0
0 0
1
2
3
0
1
VI – Enable G Input Voltage – V
2
3
VI – Enable G Input Voltage – V
Figure 2
Figure 3
OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE
OUTPUT VOLTAGE vs ENABLE G INPUT VOLTAGE
ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ 6
6
VCC = 5.25 V
5
VCC = 5 V
VCC = 4.75 V
4
VO – Output Voltage – V
VO – Output Voltage – V
5
3
2
ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ 1
Load = 470 Ω to VCC TA = 25°C See Note B
0
0
1
ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎ 4
TA = 70°C
3
TA = 25°C
TA = 0°C
2
1
VCC = 5 V Load = 470 Ω to VCC See Note B
0
2
3
0
VI – Enable G Input Voltage – V
1
2
VI – Enable G Input Voltage – V
Figure 5
Figure 4
NOTES: A. The A input is connected to VCC during testing of the Y outputs and to ground during testing of the Z outputs. B. The A input is connected to ground during testing of the Y outputs and to VCC during testing of the Z outputs.
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AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998
TYPICAL CHARACTERISTICS HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT
HIGH-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE
5
ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ
ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ
4
4
VCC = 5.25 V
VOH – High-Level Output Voltage – V
VOH – High-Level Output Voltage – V
VCC = 5 V See Note A
IOH = –20 mA
3
IOH = –40 mA
2
1
VCC = 5 V
3
VCC = 4.75 V
2
1
ÎÎÎÎÎ ÎÎÎÎÎ TA = 25°C See Note A
0
0 0
25
50
0
75
TA – Free-Air Temperature – °C
–20
ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ
–100
ÎÎÎÎÎ ÎÎÎÎÎ 1
VCC = 5 V IOL = 40 mA See Note B
TA = 25°C See Note B
0.9 VOL– Low-Level Output Voltage – V
VOL– Low-Level Output Voltage – V
–80
LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT
LOW-LEVEL OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE
0.4
–60
Figure 7
Figure 6
0.5
–40
IOH – High-Level Output Current – mA
0.3
0.2
0.1
0.8 0.7 0.6
ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ
0.5
VCC = 4.75 V
0.4
VCC = 5.25 V
0.3 0.2 0.1 0
0 0
25
50
75
TA – Free-Air Temperature – °C
0
20
40
60
80
100
120
IOL – Low-Level Output Current – mA
Figure 9
Figure 8
NOTES: A. The A input is connected to VCC during testing of the Y outputs and to ground during testing of the Z outputs. B. The A input is connected to ground during testing of the Y outputs and to VCC during testing of the Z inputs.
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AM26LS31C QUADRUPLE DIFFERENTIAL LINE DRIVER SLLS114D – JANUARY 1979 – REVISED OCTOBER 1998
TYPICAL CHARACTERISTICS Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE
Y OUTPUT VOLTAGE vs DATA INPUT VOLTAGE
ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ
5
5
VO – Y Output Voltage – V
4
ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎ VCC = 5.25 V VCC = 5 V VCC = 4.75 V
3
2
ÎÎÎÎ ÎÎÎÎ No Load
3
TA = 70°C
ÎÎÎÎ ÎÎÎÎ
TA = 0°C
TA = 25°C
2
1
1
0
0 0
1
2
3
0
1
Figure 11
Figure 10
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VI – Data Input Voltage – V
VI – Data Input Voltage – V
8
ÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎ ÎÎÎÎ
4 VO – Y Output Voltage – V
No Load TA = 25°C
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