Document
SN65LBC175, SN75LBC175 QUADRUPLE LOWĆPOWER DIFFERENTIAL LINE RECEIVERS
D Meets or Exceeds 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 LTC489
SLLS171G − OCTOBER 1993 − REVISED MARCH2009
D, DW, OR N PACKAGE (TOP VIEW)
1B 1 1A 2 1Y 3 1,2EN 4 2Y 5 2A 6 2B 7 GND 8
16 VCC 15 4B 14 4A 13 4Y 12 3,4EN 11 3Y 10 3A 9 3B
description
The SN65LBC175 and SN75LBC175 are monolithic, quadruple, differential line receivers with 3-state outputs 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 LinBiCMOStechnology 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 is available in the 16-pin DIP (N), small-outline package (D), and the wide small-outline package (DW). The SN75LBC175 is available in the 16-pin DIP (N) and the small-outline package (D).
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.
PACKAGE
SOIC Wide SOIC
PDIP
AVAILABLE OPTIONS
TEMPERATURE RANGE
0°C to 70°C
−40°C to 85°C
SN75LBC175D SN65LBC175D
SN65LBC175DW
SN75LBC175N SN65LBC175N
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.
LinBiCMOS is a trademark of Texas Instruments.
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.
Copyright 2009 Texas Instruments Incorporated
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1
SN65LBC175, SN75LBC175 QUADRUPLE LOWĆPOWER DIFFERENTIAL LINE RECEIVERS
SLLS171G − OCTOBER 1993 − REVISED MARCH2009
logic symbol†
logic diagram (positive logic)
4
1,2EN
EN
2 1A
1 1B
6 2A
7 2B
12
3,4EN
EN
3 1Y
5 2Y
10 3A
9 3B
14 4A
15 4B
11 3Y
13 4Y
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
4 1,2EN
2 1A
1 1B
6 2A
7 2B
12 3,4EN
10 3A
9 3B
14 4A
15 4B
FUNCTION TABLE (each receiver)
DIFFERENTIAL INPUTS
OUTPUT
A−B
ENABLE
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
3 1Y
5 2Y
11 3Y
13 4Y
EQUIVALENT OF A AND B INPUTS
VCC
100 kΩ (A Only)
3 kΩ
Input
18 kΩ
Receiver
100 kΩ (B Only)
12 kΩ
1 kΩ
TYPICAL OF ALL OUTPUTS VCC
Y Output
Input
TYPICAL OF EN INPUT
VCC
Output
2
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
SN65LBC175, SN75LBC175 QUADRUPLE LOWĆPOWER DIFFERENTIAL LINE RECEIVERS
SLLS171G − OCTOBER 1993 − REVISED MARCH2009
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 VCC + 0.5 V Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA: SN65LBC175 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 85°C
SN75LBC175 . . . . . . . . . . . . . . . . . . . . . . . . . .