SN75157
DUAL DIFFERENTIAL LINE RECEIVER
SLLS084C – SEPTEMBER 1980 – REVISED MARCH 1997
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Meets or Exceeds the Requirements of
ANSI Standards EIA/TIA-422-B and
EIA/TIA-423-B and ITU Recommendation
V.10 and V.11
D
Operates From Single 5-V Power Supply
D
Wide Common-Mode Voltage Range
D
High Input Impedance
D
TTL-Compatible Outputs
D
High-Speed Schottky Circuitry
D
8-Pin Dual-In-Line Package
description
The SN75157 is a dual differential line receiver designed to meet Standards EIA/TIA-422-B and -423-B and ITU
V.10 and V.11. It utilizes Schottky circuitry and has TTL-compatible outputs. The inputs are compatible with
either a single-ended or a differential-line system. The device operates from a single 5-V power supply and is
supplied in 8-pin dual-in-line and small-outline packages.
The SN75157 is characterized for operation from 0°C to 70°C.
logic symbol
†
5
6
7
1
2OUT
1OUT
1IN +
1IN –
2IN +
2IN –
3
2
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
logic diagram (positive logic)
2IN –
2IN +
1IN –
1IN +
1OUT
2OUT
3
2
5
6
7
1
Copyright 1997, 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
8
7
6
5
1IN+
1OUT
2OUT
GND
V
CC
1IN–
2IN+
2IN–
D or P PACKAGE
(TOP VIEW)
SN75157
DUAL DIFFERENTIAL LINE RECEIVER
SLLS084C – SEPTEMBER 1980 – REVISED MARCH 1997
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
schematics of inputs and outputs
EQUIVALENT OF EACH INPUT
V
CC
8 kΩ
Input
Current
Source
TYPICAL OF ALL OUTPUTS
V
CC
50 Ω NOM
Output
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, V
CC
(see Note 1) –0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
±15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage, V
ID
(see Note 2) ±15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage range, V
O
(see Note 1) –0.5 V to 5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low-level output current, I
OL
50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 input voltage, are with respect to the network ground terminal.
2. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
OPERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
D 725 mW 5.8 mW/°C 464 mW
P 1000 mW 8.0 mW/°C 640 mW
recommended operating conditions
MIN NOM MAX UNIT
Supply voltage, V
CC
4.75 5 5.25 V
Common-mode input voltage, V
IC
±7 V
Operating free-air temperature, T
A
0 25 70 °C
SN75157
DUAL DIFFERENTIAL LINE RECEIVER
SLLS084C – SEPTEMBER 1980 – REVISED MARCH 1997
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage, common-mode input
voltage, and operating free-air temperature (unless otherwise noted)
†
PARAMETER TEST CONDITIONS MIN TYP‡MAX UNIT
p
–0.2 0.2
VITInput threshold voltage (V
IT+
and V
IT–
)
See Note 3 –0.4 0.4
V
V
hys
Hysteresis voltage (V
IT+
– V
IT–
) 70 mV
V
OH
High-level output voltage VID = 0.2 V, IO = –1 mA 2.5 3.5 V
V
OL
Low-level output voltage VID = –0.2 V, IO = 20 mA 0.35 0.5 V
p
V
= 0 to 5.5 V,
VI = 10 V 1.1 3.25
IIInput current
CC
,
See Note 4
VI = –10 V –1.6 –3.25
mA
I
OS
Short-circuit output current
§
VO = 0, VID = 0.2 V –40 –75 –100 mA
I
CC
Supply current VID = –0.5 V, No load 35 50 mA
†
The algebraic convention, where the less positive (more negative) limit is designated as minimum, is used in this data sheet for threshold levels
only.
‡
All typical values are at VCC = 5 V, TA = 25°C.
§
Only one output should be shorted at a time and duration of the short circuit should not exceed one second.
NOTES: 3. The expanded threshold parameter is tested with a 500-Ω resistor in series with each input.
4. The input not under test is grounded.
switching characteristics, VCC = 5 V, TA = 25°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
PLH
Propagation delay time, low- to high-level output
p
15 25 ns
t
PHL
Propagation delay time, high- to low-level output
C
L
= 15 pF,
See Figure 1
13 25 ns
PARAMETER MEASUREMENT INFORMATION
0.5 V
Input
(see Note B)
–0.5 V
Output
50% 50%
t
PLH
t
PHL
1.5 V 1.5 V
VOLTAGE WAVEFORMSTEST CIRCUIT
VCC+
VCC+
Output
392 Ω
Input
51 Ω
CL = 15 pF
(see Note A)
3.92 kΩ
NOTES: A. CL includes probe and jig capacitance.
B. The input pulse is supplied by a generator having the following characteristics: tr ≤ 5 ns, tf ≤ 5 ns, PRR ≤ 5 MHz, duty cycle = 50%.
Figure 1. Test Circuit and Voltage Waveforms
SN75157
DUAL DIFFERENTIAL LINE RECEIVER
SLLS084C – SEPTEMBER 1980 – REVISED MARCH 1997
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 2
–100
VID – Differential Input Voltage – mV
4
0
–50 0 50
1
2
3
OUTPUT VOLTAGE
vs
DIFFERENTIAL INPUT VOLTAGE
100
TA = 25°C
VIC = ±7 V
VIC = 0
VIC = ±7 V
VCC = 4.75 V
VIC = 0
VO – Output Voltage – V
V
O
Figure 3
OUTPUT VOLTAGE
vs
DIFFERENTIAL INPUT VOLTAGE
3
2
1
500–50
0
100
4
VID – Differential Input Voltage – mV
–100
VIC = ±7 V
VIC = 0
VIC = ±7 V
VIC = 0
TA = 25°C
VCC = 5.25 V
VO – Output Voltage – V
V
O
Figure 4
– High-Level Output Voltage – V
0
IOH – High-Level Output Current – mA
5
–80
0
–10 –20 –30 –40 –50 –60 –70
0.5
1
1.5
2
2.5
3
3.5
4
4.5
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEL OUTPUT CURRENT
VCC = 5 V
VID = 0.2 V
TA = 25°C
V
OH
Figure 5
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
– Low-Level Output Voltge – V
0
IOL – Low-Level Output Current – mA
0.6
40
0
510
15 20 25 30 35
0.1
0.2
0.3
0.4
0.5
VCC = 5 V
VID = –0.2 V
TA = 25°C
V
OL
SN75157
DUAL DIFFERENTIAL LINE RECEIVER
SLLS084C – SEPTEMBER 1980 – REVISED MARCH 1997
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
0
VCC – Supply Voltage – V
100
8
0
1 2 3 4 5 6 7
10
20
30
40
50
60
70
80
90
No Load
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
TA = 25°C
Inputs Open
Figure 6
ICC – Supply Current – mA
CC
I
APPLICATION INFORMATION
5 V
1/2 SN75158
Twisted Pair
5 V
1/2 SN75157
R
t
1/2 SN75157
5 V
Figure 7. EIA/TIA-422-B System Application
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Copyright 1998, Texas Instruments Incorporated
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