Texas Instruments SN65LBC175D, SN65LBC175DR, SN65LBC175N, SN75LBC175DR, SN75LBC175N Datasheet
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SN65LBC175, SN75LBC175
QUADRUPLE LOW-POWER DIFFERENTIAL LINE RECEIVERS
SLLS171C – OCTOBER 1993 – REVISED APRIL 2000
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D
Meet or Exceed the EIA Standards
RS-422-A, RS-423-A, RS-485, and CCITT
Recommendation V.11
D
Designed to Operate With Pulse Durations
as Short as 20 ns
D
Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
D
Input Sensitivity . . . ±200 mV
D
Low-Power Consumption . . . 20 mA Max
D
Open-Circuit Fail-Safe Design
D
Common-Mode Input Voltage Range of
–7 V to 12 V
D
Pin Compatible With SN75175 and MC3486
description
The SN65LBC175 and SN75LBC175 are
monolithic, quadruple, differential line receivers
with 3-state outputs and are designed to meet the
requirements of the EIA standards RS-422-A,
RS-423-A, RS-485, and CCITT Recommendation
V.11. The devices are optimized for balanced
multipoint bus transmission at data rates up to and
exceeding 10 million bits per second. The
receivers are enabled in pairs, with an active-high
enable input. Each differential receiver input
features high impedance, hysteresis for
increased noise immunity, and sensitivity of
±200 mV over a common-mode input voltage
range of 12 V to –7 V . The fail-safe design ensures
that when the inputs are open-circuited, the
outputs are always high. Both devices are
designed using the TI proprietary LinBiCMOS
technology allowing low power consumption, high
switching speeds, and robustness.
These devices offer optimum performance when
used with the SN75LBC172 or SN75LBC174
quadruple line drivers. The SN65LBC175 and
SN75LBC175 are available in the 16-pin DIP (N)
and small-outline inline circuit (SOIC) D
packages.
The SN65LBC175 is characterized over the
industrial temperature range of – 40°C to 85°C.
The SN75LBC175 is characterized for operation
over the commercial temperature range of 0°C
to 70°C.
LinBiCMOS is a trademark of Texas Instruments Incorporated.
Copyright 2000, 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.
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1B
1A
1Y
1,2EN
2Y
2A
2B
GND
V
CC
4B
4A
4Y
3,4EN
3Y
3A
3B
D OR N PACKAGE
(TOP VIEW)
logic symbol
†
logic diagram (positive logic)
2B
2A
1B
1A
1,2EN
2Y
1Y
5
3
7
6
1
2
4
EN
2Y
1Y
5
3
7
6
1
2
4
2B
2A
1B
1A
1,2EN
†
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
4B
4A
3B
3A
3,4EN
4Y
3Y
13
11
15
14
9
10
12
EN
4Y
3Y
13
11
15
14
9
10
12
4B
4A
3B
3A
3,4EN
SN65LBC175, SN75LBC175
QUADRUPLE LOW-POWER DIFFERENTIAL LINE RECEIVERS
SLLS171C – OCTOBER 1993 – REVISED APRIL 2000
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
FUNCTION TABLE
(each receiver)
DIFFERENTIAL INPUTS
A–B
ENABLE
OUTPUT
Y
VID ≥ 0.2 V H H
–0.2 V < VID < 0.2 V H ?
VID ≤ –0.2 V H L
X L Z
Open circuit H H
H = high level, L = low level, X = irrelevant,
Z = high impedance (off), ? = indeterminate
schematics of inputs and outputs
TYPICAL OF ALL OUTPUTS
V
CC
Y Output
EQUIVALENT OF A AND B INPUTS
12 kΩ
3 kΩ
18 kΩ
1 kΩ
V
CC
Input
100 kΩ
(A Only)
100 kΩ
(B Only)
Input
V
CC
TYPICAL OF EN INPUT
Output
SN65LBC175, SN75LBC175
QUADRUPLE LOW-POWER DIFFERENTIAL LINE RECEIVERS
SLLS171C – OCTOBER 1993 – REVISED APRIL 2000
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage range, VCC (see Note 1) –0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI (A or B inputs) ±25 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage, VID (see Note 2) ±25 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range at Y, 1/2EN, 3/4EN –0.3 V to V
CC
+ 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: SN65LBC175 –40°C to 85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN75LBC175 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 are with respect to GND.
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
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
D 1100 mW 8.7 mW/°C 709 mW 578 mW
N 1150 mW 9.2 mW/°C 736 mW 598 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 12 V
Differential input voltage, V
ID
±6 V
High-level input voltage, V
IH
p
2 V
Low-level input voltage, V
IL
EN inputs
0.8 V
High-level output current, I
OH
–8 mA
Low-level output current, I
OL
16 mA
p
p
SN65LBC175 –40 85
°
Operating free-air temperature, T
A
SN75LBC175 0 70
°C
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