Texas Instruments SN75161BN, SN75162BDW, SN75162BDWR, SN75162BN, SN75161BDW Datasheet

SN75161B, SN75162B

OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SLLS005B – OCTOBER 1980 – REVISED MA Y 1995

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D

Meets IEEE Standard 488-1978 (GPIB)

D

8-Channel Bidirectional Transceivers

D

Power-Up/Power-Down Protection
(Glitch Free)

D

Designed to Implement Control Bus
Interface

D

SN75161B Designed for Single Controller

D

SN75162B Designed for Multiple
Controllers

D

High-Speed, Low-Power Schottky Circuitry

D

Low Power Dissipation...72 mW Max Per
Channel

D

Fast Propagation Times . . . 22 ns Max

D

High-Impedance pnp Inputs

D

Receiver Hysteresis...650 mV Typ

D

Bus-Terminating Resistors Provided on
Driver Outputs

D

No Loading of Bus When Device Is
Powered Down (V

CC

= 0)

description

The SN75161B and SN75162B eight-channel,
general-purpose interface bus transceivers are
monolithic, high-speed, low-power Schottky
devices designed to meet the requirements of
IEEE Standard 488-1978. Each transceiver is
designed to provide the bus-management and
data-transfer signals between operating units of
a single- or multiple-controller instrumentation
system. When combined with the SN75160B octal
bus transceiver, the SN75161B or SN75162B
provides the complete 16-wire interface for the
IEEE-488 bus.

The SN75161B and SN75162B feature eight
driver-receiver pairs connected in a front-to-back
configuration to form input/output (I/O) ports at
both the bus and terminal sides. A power­up/-down disable circuit is included on all bus and
receiver outputs. This provides glitch-free opera­tion during V

CC

power up and power down.

Copyright  1995, 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.

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.

SC

TE

REN

IFC
NDAC
NRFD

DAV

EOI

ATN

SRQ

NC

GND

1
2
3
4
5
6
7
8
9
10
11

22
21
20
19
18
17
16
15
14
13
12

V

CC

NC
REN
IFC
NDAC
NRFD
DAV
EOI
ATN
SRQ
NC
DC

(TOP VIEW)

TE

REN

IFC
NDAC
NRFD

DAV

EOI

ATN

SRQ

GND

V

CC

REN
IFC
NDAC
NRFD
DAV
EOI
ATN
SRQ
DC

1
2
3
4
5
6
7
8
9
10

20
19
18
17
16
15
14
13
12
11

GPIB

I/O Ports

Terminal
I/O Ports

(TOP VIEW)

1
2
3
4
5
6
7
8
9
10
11
12

24
23
22
21
20
19
18
17
16
15
14
13

SC

TE

REN

IFC
NDAC
NRFD

DAV

EOI

ATN
SRQ
GND

V

CC

NC
REN
IFC
NDAC
NRFD
DAV
EOI
ATN
SRQ
DC

(TOP VIEW)

NC–No internal connection

SN75161B . . . DW OR N PACKAGE

SN75162B . . . DW PACKAGE

SN75162B ...N PACKAGE

GPIB

I/O Ports

Terminal
I/O Ports

GPIB

I/O Ports

Terminal
I/O Ports

SN75161B, SN75162B
OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SLLS005B – OCTOBER 1980 – REVISED MA Y 1995

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

description (continued)

The direction of data through these driver-receiver pairs is determined by the DC, TE, and SC (on SN75162B)
enable signals. The SC input on the SN75162B allows the REN and IFC transceivers to be controlled
independently.

The driver outputs (GPIB I/O ports) feature active bus-terminating resistor circuits designed to provide a high
impedance to the bus when supply voltage V

CC

is 0. The drivers are designed to handle loads up to 48 mA of
sink current. Each receiver features pnp transistor inputs for high input impedance and hysteresis of 400 mV
for increased noise immunity. All receivers have 3-state outputs to present a high impedance to the terminal
when disabled.

The SN75161B and SN75162B are characterized for operation from 0°C to 70°C.

Function Tables

SN75161B RECEIVE/TRANSMIT

CONTROLS

BUS-MANAGEMENT CHANNELS DATA-TRANSFER CHANNELS

DC TE

ATN

†

ATN

†

SRQ REN IFC EOI DAV NDAC NRFD

(Controlled by DC) (Controlled by TE)

H H H

T

H H L

RTR

RRTRR

L L H

R

L L L

TRT

TTRTT

H L X R T R R R R T T
L H X T R T T T T R R

H = high level, L = low level, R = receive, T = transmit, X = irrelevant
Direction of data transmission is from the terminal side to the bus side, and the direction of data receiving is from the bus side to the terminal side.
Data transfer is noninverting in both directions.

†

ATN is a normal transceiver channel that functions additionally as an internal direction control or talk enable for EOI whenever the DC and TE
inputs are in the same state. When DC and TE are in opposite states, the ATN channel functions as an independent transceiver only.

SN75162B RECEIVE/TRANSMIT

CONTROLS

BUS-MANAGEMENT CHANNELS DATA-TRANSFER CHANNELS

SC DC TE

ATN

†

ATN

†

SRQ REN IFC EOI DAV NDAC NRFD

(Controlled by DC) (Controlled by SC) (Controlled by TE)

H H H

T

H H L

R

TRTRR

L L H

R

L L L

T

RTRTT

H L X R T R R T T

L H X T R T T R R
H T T
L R R

H = high level, L = low level, R = receive, T = transmit, X = irrelevant
Direction of data transmission is from the terminal side to the bus side, and the direction of data receiving is from the bus side to the terminal side.
Data transfer is noninverting in both directions.

†

ATN is a normal transceiver channel that functions additionally as an internal direction control or talk enable for EOI whenever the DC and TE
inputs are in the same state. When DC and TE are in opposite states, the ATN channel functions as an independent transceiver only.

SN75161B, SN75162B

OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SLLS005B – OCTOBER 1980 – REVISED MA Y 1995

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

CHANNEL-IDENTIFICATION TABLE

NAME

IDENTITY CLASS

DC Direction Control
TE Talk Enable Control
SC System Control (SN75162B only)
ATN Attention
SRQ Service Request
REN Remote Enable Bus
IFC Interface Clear Management
EOI End of Identity
DAV Data Valid
NDAC Not Data Accepted Data
NRFD Not Ready for Data Transfer

SN75161B logic symbol

†

EN3

1

ATN

8

1

ATN

13

1

1

EOI

7

3

EOI

14

1

3

SRQ

1

SRQ

12

1

1

REN

2

1

REN

19

1

1

IFC

3

1

IFC

18

1

1

DAV

6

2

DAV

15

1

2

NDAC

4

2

NDAC

17

1

2

2

1

16

NRFD

2

EN1/G4
EN2/G5

5
4

5

NRFD

TE

1

DC

11

This symbol is in accordance with IEEE Std 91-1984 and
IEC Publication 617-12.
Designates 3-state outputs
Designates passive-pullup outputs

{

9

SN75161B logic diagram (positive logic)

NRFD

5

NRFD

16

NDAC

4

NDAC

17

DAV

6

DAV

15

IFC

3

IFC

18

REN

2

REN

19

SRQ

9

SRQ

12

EOI

7

EOI

14

11

DC

1

TE

13

ATN

8

ATN

SN75161B, SN75162B
OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SLLS005B – OCTOBER 1980 – REVISED MA Y 1995

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

SN75162B logic symbol

†

EN3

≥ 1

ATN

1

ATN

14

1

1

EOI

6

EOI

1

6

SRQ

1

SRQ

1

1

REN

REN

1

3

IFC

IFC

1

DAV

2

DAV

1

2

NDAC

2

NDAC

1

2

2

1

NRFD

2

EN1/G4
EN2/G5

5
4

NRFD

TE

DC

This symbol is in accordance with IEEE Std 91-1984 and
IEC Publication 617-12.
Designates 3-state outputs
Designates passive-pullup outputs

{

EN3

12

2

1

15

SC

13

20

19

16

18

17

9

8

10

3

4

7

5

6

3

3

3

Pin numbers shown are for the N package.

SN75162B logic diagram (positive logic)

NRFDNRFD

NDACNDAC

DAVDAV

IFCIFC

RENREN

SRQSRQ

EOIEOI

DC

TE

ATN ATN

12

2

1
14

15

13

20

19

16

18

17

9

8

10

3

4

7

5

6

SC

SN75161B, SN75162B

OCTAL GENERAL-PURPOSE INTERFACE BUS TRANSCEIVERS

SLLS005B – OCTOBER 1980 – REVISED MA Y 1995

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

schematics of inputs and outputs

NOM

4 kΩ

R

(eq)

1.7 kΩ

NOM

10 kΩ
NOM

V

CC

GND

Input/Output Port

Input/Output Port

GND

V

CC

NOM

10 kΩ

NOM

4 kΩ

NOM

1.7 kΩ

NOM

9 kΩ

GND

Input

V

CC

NOM

4 kΩ

EQUIVALENT OF ALL CONTROL INPUTS TYPICAL OF SRQ, NDAC, AND NRFD GPIB I/O PORT

Circuit inside dashed lines is on the driver outputs only.

TYPICAL OF ALL I/O PORTS EXCEPT SRQ, NDAC,

AND NRFD GPIB I/O PORTS

Driver output R

(eq)

= 30 Ω NOM

Receiver output R

(eq)

= 110 Ω NOM

Circuit inside dashed lines is on the driver outputs only.
R

(eq)

= equivalent resistor

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

†

Supply voltage, V

CC

(see Note 1) 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage, V

I

5.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Low-level driver output current, I

OL

100 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating free-air temperature range, T

A

0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, T

stg

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16) inch from the case 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 voltage values are with respect to network ground terminal.