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SN65LBC171 Datasheet Preview

SN65LBC171 Datasheet

Triple Differential Transceivers

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SN65LBC171, SN75LBC171
TRIPLE DIFFERENTIAL TRANSCEIVERS
SLLS460A – NOVEMBER 2000 – REVISED FEBRUARY 2001
D Three Differential Transceivers in One
Package
D Signaling Rates1 Up to 30 Mbps
D Low Power and High Speed
D Designed for TIA/EIA-485, TIA/EIA-422, ISO
8482, and ANSI X3.277 (HVD SCSI Fast–20)
Applications
D Common-Mode Bus Voltage Range
–7 V to 12 V
D ESD Protection on Bus Terminals
Exceeds 12 kV
D Driver Output Current up to ±60 mA
D Thermal Shutdown Protection
D Driver Positive and Negative Current
Limiting
D Power-Up, Power-Down Glitch-Free
Operation
D Pin-Compatible With the SN75ALS171
D Available in Shrink Small-Outline Package
description
The SN65LBC171 and SN75LBC171 are
monolithic integrated circuits designed for
bidirectional data communication on multipoint
bus-transmission lines. Potential applications
include serial or parallel data transmission, cabled
peripheral buses with twin axial, ribbon, or
twisted-pair cabling. These devices are suitable
for FAST–20 SCSI and can transmit or receive
data pulses as short as 25 ns, with skew less than
3 ns.
These devices combine three 3-state differential
line drivers and three differential input line
receivers, all of which operate from a single 5-V
power supply.
SN65LBC171DB (Marked as BL171)
SN75LBC171DB (Marked as LB171)
SN65LBC171DW (Marked as 65LBC171)
SN75LBC171DW (Marked as 75LBC171)
(TOP VIEW)
1R 1
1DE 2
1D 3
GND 4
GND 5
2R 6
2DE 7
2D 8
3R 9
3DE 10
logic diagram
20 1B
19 1A
18 RE
17 CDE
16 VCC
15 2B
14 2A
13 3B
12 3A
11 3D
CDE
1DE
1A
1D
1B
RE
1R
2DE
2A
2D
2B
2R
3DE
3A
3D
3B
3R
The driver differential outputs and the receiver differential inputs are connected internally to form three
differential input/output (I/O) bus ports that are designed to offer minimum loading to the bus whenever the driver
is disabled or VCC = 0. These ports feature a wide common-mode voltage range making the device suitable for
party-line applications over long cable runs.
The SN75LBC171 is characterized for operation over the temperature range of 0°C to 70°C. The SN65LBC171
is characterized for operation over the temperature range of –40°C to 85°C.
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.
1The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).
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 2001, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1




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SN65LBC171 Datasheet Preview

SN65LBC171 Datasheet

Triple Differential Transceivers

No Preview Available !

SN65LBC171, SN75LBC171
TRIPLE DIFFERENTIAL TRANSCEIVERS
SLLS460A NOVEMBER 2000 REVISED FEBRUARY 2001
AVAILABLE OPTIONS{
PACKAGE
TA
PLASTIC SMALL-OUTLINE
PLASTIC SHRINK SMALL-OUTLINE
(JEDEC MS-013)
(JEDEC MO-150)
0°C to 70°C
SN75LBC171DW
SN75LBC171DB
40°C to 85°C
SN65LBC171DW
Add R suffix for taped and reel
SN65LBC171DB
Function Tables
INPUT
D
H
L
OPEN
X
X
X
X
EACH DRIVER
ENABLE
DE CDE
OUTPUTS
AB
H
H
HL
H
H
LH
H
H
LH
L
X
ZZ
X
L
ZZ
OPEN X
ZZ
X OPEN Z Z
EACH RECEIVER
DIFFERENTIAL INPUT ENABLE OUTPUT
(VAVB)
RE
R
VID 0.2 V
L
H
0.2 V < VID < 0.2 V
L
?
VID 0.2 V
L
L
X
H
Z
OPEN
L
H
H = high level, L = low level, X = irrelevant,
Z = high impedance (off), ? = indeterminate
equivalent input and output schematic diagrams
D, DE,CDE INPUTS
VCC
RE INPUT
Input
8V
1 k
100 k
Input
100 k
1 k
8V
VCC
VCC
R OUTPUT
40
Output
A INPUT
16 V
Input
100 k
18 k
16 V
4 k
4 k
VCC
B INPUT
16 V
Input
16 V
18 k
100 k
4 k
4 k
VCC VCC
A AND B OUTPUT
4 k
18 k
4 k
16 V
Output
16 V
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN65LBC171
Description Triple Differential Transceivers
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SN65LBC171 Datasheet PDF






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