SN75LBC786 Datasheet | etcTI





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SN75LBC786 Datasheet PDF

Part Number SN75LBC786
Description QUADRUPLE RS-423-B DRIVER/RECEIVER
Manufacture etcTI
Total Page 8 Pages
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Features: Datasheet pdf SN75LBC786 QUADRUPLE RS-423-B DRIVER/REC EIVER WITH LOOPBACK SLLS184 – NOVEMB ER 1994 D Four Independent Drivers and Receivers D Loopback Mode Functionally Self Tests DW PACKAGE (TOP VIEW) Dri vers and Receivers Without Disconnectio n From Line D Driver Slew Rate Controll ed by a Single Resistor D Internal Ther mal-Overload Protection 3A 1 3Z 2 3LB 3 4A 4 4Z 5 28 2LB 27 2Z 26 2A 25 1LB 24 1Z D RS-423-B Inputs and Outputs De signed to Withstand ± 25 V D ESD Prote ction Exceeds 2000 V Per MIL-STD-833C M ethod 3015 D LinBiCMOS™ Process Techn ology 4LB VSS GND 4B 4Y 3B 6 7 8 9 10 11 23 1A 22 RWS 21 VDD 20 1Y 19 1B 18 2Y description 3Y 12 3C 13 17 2B 16 2C The SN75LBC786 is a monolithic qua druple 4C 14 15 1C RS-423-B driver an d receiver with integrated- loopback f unction. The operation of the SN75LBC7 86 is closely based on that of the SN75 186. In normal operation, the device pe rforms as four independent RS-423-B dr iver/receiver pairs designed to interface data-terminal equipment (D.

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SN75LBC786 Datasheet
SN75LBC786
QUADRUPLE RS-423-B DRIVER/RECEIVER WITH LOOPBACK
SLLS184 – NOVEMBER 1994
D Four Independent Drivers and Receivers
D Loopback Mode Functionally Self Tests
DW PACKAGE
(TOP VIEW)
Drivers and Receivers Without
Disconnection From Line
D Driver Slew Rate Controlled by a Single
Resistor
D Internal Thermal-Overload Protection
3A 1
3Z 2
3LB 3
4A 4
4Z 5
28 2LB
27 2Z
26 2A
25 1LB
24 1Z
D RS-423-B Inputs and Outputs Designed to
Withstand ± 25 V
D ESD Protection Exceeds 2000 V Per
MIL-STD-833C Method 3015
D LinBiCMOSProcess Technology
4LB
VSS
GND
4B
4Y
3B
6
7
8
9
10
11
23 1A
22 RWS
21 VDD
20 1Y
19 1B
18 2Y
description
3Y 12
3C 13
17 2B
16 2C
The SN75LBC786 is a monolithic quadruple
4C 14 15 1C
RS-423-B driver and receiver with integrated-
loopback function. The operation of the
SN75LBC786 is closely based on that of the SN75186. In normal operation, the device performs as four
independent RS-423-B driver/receiver pairs designed to interface data-terminal equipment (DTE) with data
circuit-terminating equipment (DCE). In loopback mode, the signal from each driver output is fed back via
special circuitry into its associated receiver input, removing the need to locally disconnect cables and install a
loopback connector. The receiver output signal is the same as the driver input signal.
The SN75LBC786 is characterized for operation over the temperature range of 0°C to 70°C.
FUNCTION TABLE
LOOPBACK
LB
INPUTS
A BC
OUTPUTS
ZY
H
L LH H
H
H
H LH H
L
H
L HL
L
H
H
H HL
L
L
H
L LL ?
H
H
H LL
?
L
H
L HH ?
H
H
H HH
?
L
L
L XX L
L
L
H XX
H
L
H = high level, L = low level, X = irrelevant, ? = indeterminate
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 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.
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1994, Texas Instruments Incorporated
1

SN75LBC786 Datasheet
SN75LBC786
QUADRUPLE RS-423-B DRIVER/RECEIVER WITH LOOPBACK
SLLS184 – NOVEMBER 1994
logic diagram (positive logic) (each transceiver)
Driver
A
LB
Z
Receiver
+
Y
C
B
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Positive supply voltage, VDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 V
Negative supply voltage, VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 14 V
Receiver input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 30 V to 30 V
Driver input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 5.75 V
Loopback input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.5 V to 5.75 V
Driver output voltage range (supplies at 0 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 30 V to 30 V
Driver output voltage range (supplies at ± 12 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 25 V to 25 V
Continuous power dissipation at (or below) TA= 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800 mW
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Case temperature 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.
NOTE 1: All voltages are with respect to network ground terminal.
recommended operating conditions
Supply voltage, VDD
Supply voltage, VSS
High-level input voltage, VIH
Low-level input voltage, VIL
High-level output current, IOH
Low-level output current, IOL
Slew rate control resistor, RWS
Operating free-air temperature, TA
Driver and loopback
Driver and loopback
Receiver
Receiver
MIN
10.8
– 10.8
2
20
0
NOM MAX
12 13.2
– 12 – 13.2
0.8
–4
4
82 820
70
UNIT
V
V
V
V
mA
mA
k
°C
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265




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