DatasheetsPDF.com

BUS TRANSCEIVERS. SN55138 Datasheet

DatasheetsPDF.com

BUS TRANSCEIVERS. SN55138 Datasheet






SN55138 TRANSCEIVERS. Datasheet pdf. Equivalent




SN55138 TRANSCEIVERS. Datasheet pdf. Equivalent





Part

SN55138

Description

QUADRUPLE BUS TRANSCEIVERS



Feature


SN55138, SN75138 QUADRUPLE BUS TRANSCEIV ERS SLLS079B – SEPTEMBER 1973 – RE VISED MAY 1995 D Single 5-V Supply D H igh-Input-Impedance, High-Threshold Rec eivers D Common Driver Strobe D TTL-Com patible Driver and Strobe Inputs With C lamp Diodes D High-Speed Operation D 10 0-mA Open-Collector Driver Outputs D Fo ur Independent Channels D TTL-Compatibl e Receiver Output SN5.
Manufacture

Texas Instruments

Datasheet
Download SN55138 Datasheet


Texas Instruments SN55138

SN55138; 5138 . . . J OR W PACKAGE SN75138 . . . D OR N PACKAGE (TOP VIEW) GND 1 1B 2 1 R 3 1D 4 2D 5 2R 6 2B 7 GND 8 16 VCC 1 5 4B 14 4R 13 4D 12 S 11 3D 10 3R 9 3B description The SN55138 and SN75138 qu adruple bus transceivers are designed f or two-way data communication over sing le-ended transmission lines. Each of th e four identical channels consists of a driver with TTL i.


Texas Instruments SN55138

nputs and a receiver with a TTL output. The driver open-collector output is des igned to handle loads up to 100-mA open collector. The receiver input is inter nally connected to the driver output, a nd has a high impedance to minimize loa ding of the transmission line. Because of the high driveroutput current and th e high receiver-input impedance, a very large number (typ.


Texas Instruments SN55138

ically hundreds) of transceivers may be connected to a single data bus. SN5513 8 . . . FK PACKAGE (TOP VIEW) 1B GND N C VCC 4B 1R 3 2 1 20 19 4 18 4R 1 D 5 17 4D NC 6 16 NC 2D 7 15 S 2R 8 14 3D 9 10 11 12 13 2B GND NC 3B 3R NC – No internal connection The receiver design also features a thresho ld of 2.3 V (typical), providing a wide r noise margin than .

Part

SN55138

Description

QUADRUPLE BUS TRANSCEIVERS



Feature


SN55138, SN75138 QUADRUPLE BUS TRANSCEIV ERS SLLS079B – SEPTEMBER 1973 – RE VISED MAY 1995 D Single 5-V Supply D H igh-Input-Impedance, High-Threshold Rec eivers D Common Driver Strobe D TTL-Com patible Driver and Strobe Inputs With C lamp Diodes D High-Speed Operation D 10 0-mA Open-Collector Driver Outputs D Fo ur Independent Channels D TTL-Compatibl e Receiver Output SN5.
Manufacture

Texas Instruments

Datasheet
Download SN55138 Datasheet




 SN55138
SN55138, SN75138
QUADRUPLE BUS TRANSCEIVERS
SLLS079B – SEPTEMBER 1973 – REVISED MAY 1995
D Single 5-V Supply
D High-Input-Impedance, High-Threshold
Receivers
D Common Driver Strobe
D TTL-Compatible Driver and Strobe Inputs
With Clamp Diodes
D High-Speed Operation
D 100-mA Open-Collector Driver Outputs
D Four Independent Channels
D TTL-Compatible Receiver Output
SN55138 . . . J OR W PACKAGE
SN75138 . . . D OR N PACKAGE
(TOP VIEW)
GND 1
1B 2
1R 3
1D 4
2D 5
2R 6
2B 7
GND 8
16 VCC
15 4B
14 4R
13 4D
12 S
11 3D
10 3R
9 3B
description
The SN55138 and SN75138 quadruple bus
transceivers are designed for two-way data
communication over single-ended transmission
lines. Each of the four identical channels consists
of a driver with TTL inputs and a receiver with a
TTL output. The driver open-collector output is
designed to handle loads up to 100-mA open
collector. The receiver input is internally
connected to the driver output, and has a high
impedance to minimize loading of the
transmission line. Because of the high driver-
output current and the high receiver-input
impedance, a very large number (typically
hundreds) of transceivers may be connected to a
single data bus.
SN55138 . . . FK PACKAGE
(TOP VIEW)
1R
3 2 1 20 19
4
18
4R
1D 5
17 4D
NC 6
16 NC
2D 7
15 S
2R 8
14 3D
9 10 11 12 13
NC – No internal connection
The receiver design also features a threshold of 2.3 V (typical), providing a wider noise margin than would be
possible with a receiver having the usual TTL threshold. A strobe turns off all drivers (high impedance) but does
not affect receiver operation. These circuits are designed for operation from a single 5-V supply and include a
provision to minimize loading of the data bus when the power-supply voltage is zero.
The SN55138 is characterized for operation over the full military temperature range of – 55°C to 125°C. The
SN75138 is characterized for operation from 0°C to 70°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.
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 © 1995, Texas Instruments Incorporated
1




 SN55138
SN55138, SN75138
QUADRUPLE BUS TRANSCEIVERS
SLLS079B – SEPTEMBER 1973 – REVISED MAY 1995
Function Tables
TRANSMITTING
INPUTS
OUTPUTS
S
D
B
R
L
H
L
H
L
L
H
L
logic symbol
RECEIVING
INPUTS
S
B
D
OUTPUT
R
H
H
X
L
H
L
X
H
H = high level, L = low level, X = irrelevant
logic diagram (positive logic)
S 12
EN2
1D 4
1R 3
2D 5
2R 6
3D 11
3R 10
4D 13
4R 14
2
1
2
1B
7
2B
9
3B
15
4B
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
Pin numbers shown are for D, J, N, and W packages.
12
S
4
1D
3
1R
5
2D
6
2R
11
3D
10
3R
13
4D
14
4R
2
1B
7
2B
9
3B
15
4B
schematics of inputs and outputs
EQUIVALENT OF EACH
STROBE AND DRIVER INPUT
EQUIVALENT OF
EACH RECEIVER INPUT
VCC
Input
4 kNOM
VCC
Input
2 kNOM
TYPICAL OF ALL
DRIVER OUTPUTS
Output
TYPICAL OF ALL
RECEIVER OUTPUTS
VCC
130 NOM
Output
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265




 SN55138
SN55138, SN75138
QUADRUPLE BUS TRANSCEIVERS
SLLS079B – SEPTEMBER 1973 – REVISED MAY 1995
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Driver off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Low-level output current into the driver output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mA
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA: SN55138 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN75138 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, N, or W package . . . . . . . . . . . . . 260°C
Case temperature for 60 seconds, TC: FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package . . . . . . . . . . . . . . . . . . . . . 300°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 voltage values are with respect to both ground terminals connected together.
DISSIPATION RATING TABLE
PACKAGE
D
FK‡
J‡
TA 25°C
POWER RATING
950 mW
1375 mW
1375 mW
DERATING FACTOR
ABOVE TA = 25°C
7.6 mW/°C
11.0 mW/°C
11.0 mW/°C
TA = 70°C
POWER RATING
608 mW
880 mW
880 mW
TA = 125°C
POWER RATING
275 mW
275 mW
N
1150 mW
9.2 mW/°C
736 mW
W
1000 mW
8.0 mW/°C
In the FK and J packages, the SN55138 chip is alloy mounted.
640 mW
200 mW
recommended operating conditions
Supply voltage, VCC
High-level input voltage, VIH
Low-level input voltage, VIL
High-level output current, IOH
Low-level output current, IOL
Operating free-air temperature, TA
Driver or strobe
Receiver
Driver or strobe
Receiver
Receiver output
Driver output
Receiver output
SN55138
MIN NOM MAX
4.5
5.5
2
3.2
0.8
1.5
– 400
100
16
– 55
125
SN75138
MIN NOM MAX
4.75
5 5.25
2
2.9
0.8
1.8
– 400
100
16
0
70
UNIT
V
V
V
µA
mA
°C
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
3



Recommended third-party SN55138 Datasheet






@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)