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SN75ALS1711 Datasheet Preview

SN75ALS1711 Datasheet

TRIPLE DIFFERENTIAL BUS TRANSCEIVER

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SN75ALS1711
TRIPLE DIFFERENTIAL BUS TRANSCEIVER
SLLS117B – APRIL 1991 – REVISED MAY 1995
D Three Bidirectional Transceivers
D Driver/Receiver Meets or Exceeds the
Requirements of ANSI Standard RS-485
and ANSI Standard X3.131-1986 (SCSI)
D High-Speed Advanced Low-Power Schottky
Circuitry
D Designed for Multipoint Transmission on
Long Bus Lines in Noisy Environments
D Wide Positive and Negative Input/Output
Bus Voltages Ranges . . . – 7 V to 12 V
D Driver Output Capacity . . . ± 60 mA
DW OR N PACKAGE
(TOP VIEW)
1R
1DE
1D
GND
GND
2R
2DE
2D
3R
3DE
1
2
3
4
5
6
7
8
9
10
20 1B
19 1A
18 RE
17 CDE
16 VCC
15 2B
14 2A
13 3B
12 3A
11 3D
D Driver Positive and Negative Current
Limiting
D Thermal Shutdown Protection
D Receiver Input Sensitivity . . . ± 200 mV Max
D Receiver Input Impedance . . . 12 kMin
D Receiver Input Hysteresis . . . 50 mV Typ
Function Tables
INPUT
D
H
L
X
X
EACH DRIVER
ENABLES
DE CDE
HH
HH
LX
XL
OUTPUTS
AB
HL
LH
ZZ
ZZ
D Operates From a Single 5-V Supply
EACH RECEIVER
D Low Supply-Current Requirements
72 mA Max
D Glitch-Free Power-up and Power-Down
Protection
DIFFERENTIAL INPUTS
A–B
VID 0.2 V
VID = – 0.2 V to 0.2 V
VID – 0.2 V
X
ENABLE
RE
L
L
L
H
OUTPUT
R
H
?
L
Z
description
The SN75ALS1711 triple differential bus
Open
LH
H = high level, L = low-level, ? = indeterminate,
X = irrelevant, Z = high impedance (off)
transceiver is a monolithic integrated circuit
designed for bidirectional data communication on multipoint bus transmission lines. It is designed for balanced
transmission lines and meets ANSI Standard RS-485 and ANSI Standard X3.131-1986 (SCSI).
The SN75ALS1711 operates from a single 5-V power supply. The drivers and receivers have individual
active-high and active-low enables, respectively, which can be externally connected together to function as a
direction control. The driver differential output and the receiver differential input pairs are connected internally
to form differential input/output (I/O) bus ports that are designed to offer minimum loading to the bus when the
driver is disabled or VCC is at 0. These ports feature wide positive and negative common-mode voltage ranges
making the device suitable for party-line applications.
The SN75ALS1711 is characterized for operation from 0°C to 70°C.
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




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SN75ALS1711 Datasheet Preview

SN75ALS1711 Datasheet

TRIPLE DIFFERENTIAL BUS TRANSCEIVER

No Preview Available !

SN75ALS1711
TRIPLE DIFFERENTIAL BUS TRANSCEIVER
SLLS117B – APRIL 1991 – REVISED MAY 1995
logic symbol
CDE
1DE
2DE
3DE
RE
17
2
7
10
18
G5
5EN1
5EN2
5EN3
EN4
3
1D
1
1R
1
1
1
4
8
2D
6
2R
2
2
1
4
11
3D
9
3R
3
3
1
4
19
1A
20
1B
logic diagram (positive logic)
17
CDE
2
1DE
3
1D
18
RE
1
1R
7
2DE
8
2D
14
2A
15
2B
6
2R
12
3A
13
3B
10
3DE
11
3D
9
3R
This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
schematics of inputs and outputs
19
1A
20
1B
Bus
14
2A
15
2B
Bus
12
3A
13
3B
Bus
EQUIVALENT OF EACH INPUT
VCC
TYPICAL OF A AND B I/O PORTS
TYPICAL OF RECEIVER OUTPUT
VCC
VCC
70
Input
All values are nominal.
1.7 k
17 k
288 k
VCC (A)
or
GND (B)
1.7 k
Input /Output Port
GND
Output
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number SN75ALS1711
Description TRIPLE DIFFERENTIAL BUS TRANSCEIVER
Maker etcTI
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