HD75161A
Octal General Purpose Interface Bus Transceivers
REJ03D0309–0200Z
(Previous ADE-205-591 (Z))
Rev.2.00
Jul.16.2004
Description
The HD75161A is an 8 channel general purpose interface bus transceiver designed to meet the requirements of IEEE
standard 488-1978. The transceiver is to provide the bus management and data transfer signals during operating in a
controller instrumentation system. When combined with the HD75160A octal bus transceiver, the HD75161A provides
the complete 16 wire interface for the IEEE 488 bus. The HD75161A features eight driver receiver pairs connected in a
front to back configureation to form input/output ports at both the bus and terminal sides. The direction of data through
these driver receiver pairs is determined by the DC and TE enable signals. The device exhibits a high impedance to the
bus when V
CC
= 0 V since the bus terminating resistors are built in. If featurs driver outputs which can handle loads up
to 48 mA of sink current. Each receiver features p n p transistor inputs for high input impedance and guaranteed
hysteresis of 400 mV for increased noise immunity.
Features
•
Ordering Information
Part Name
HD75161AP
Package Type
DILP-20 pin
Package Code
DP-20N, -20NEV
P
Package
Abbreviation
—
Taping Abbreviation
(Quantity)
Pin Arrangement
TE 1
REN 2
IFC 3
GPIB I/O PORTS
NDAC
NRFD
20 V
CC
19 REN
18 IFC
17
16
NDAC
NRFD
TERMINAL I/O PORTS
4
5
DAV 6
EOI 7
ATN 8
SRQ 9
GND 10
15 DAV
14 EOI
13 ATN
12 SRQ
11 DC
(Top view)
Rev.2.00, Jul.16.2004, page 1 of 11
HD75161A
Table Of Abbreviation
DRIVERS
Name
DC
TE
ATN
SRQ
REN
IFC
EOI
DAV
NDAC
NRFD
Identity
Direction Control
Talk Enable
Attention
Service Request
Remote Enable
Interface Clear
End Or Identify
Data Valid
Not Data Accepted
Not Ready For Data
Class
Control
Bus Management
Data Transfer
Function Table
Bus management Channels
DC
H
H
L
L
H
L
Controls
TE
H
H
L
L
L
H
H
L
H
L
X
X
ATN*
1
ATN
R
T
R
T
SRQ
REN
Controlled By DC
T
R
T
R
R
T
R
T
R
T
R
T
IFC
EOI
T
R
R
T
R
T
T
R
R
T
Data transfer Channels
DAV
NDAC
NRFD
Controlled by TE
R
T
T
R
R
T
T
R
H : High level
L : Low level
X : Irrelevant
R : Receiver
T : Transmit
Notes: 1. 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.
2. Direction of data transmittion 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.
Absolute Maximum Ratings
Item
Supply Voltage
Input Voltage
Output Current
Power Dissipation (Ta = 25°C)
Operating Temperature Range
Storage Temperature Range
Note:
V
CC
V
IC
I
OL
P
T
Topr
Tstg
Symbol
7
5.5
100
1150
0 to 70
–65 to +150
Rating
V
V
mA
mW
°C
°C
Unit
1. The absolute maximum ratings are values which must not individually be exceeded, and furthermore, no two
of which may be realized at the same time.
Rev.2.00, Jul.16.2004, page 2 of 11
HD75161A
Recommended Operating Conditions
Item
Supply Voltage
Output Current Bus Ports With 3 State Outputs
Terminal Ports
Output Current Bus Ports With 3 State Outputs
Terminal Ports
Operating Temperature
Symbol
V
CC
I
OH
I
OL
Topr
Min
4.75
—
—
—
—
0
Typ
5.00
—
—
—
—
—
Max
5.25
–5.2
–800
48
16
70
V
mA
µA
mA
°C
Unit
Logic Diagram
DC
TE
ATN
D
R
ATN
EOI
D
R
EOI
SRQ
D
R
SRQ
TERMINAL I/O PORTS
REN
D
R
REN
IFC
D
R
IFC
DAV
D
R
DAV
NDAC
D
R
NDAC
NRFD
D
R
NRFD
Rev.2.00, Jul.16.2004, page 3 of 11
GPIB I/O PORTS
HD75161A
DC Electrical Characteristics
(Ta = 0 to 70°C)
Item
Input Voltage
Input Clamp Voltage
Hysteresis
Bus
Output Voltage
Terminal
Bus
Terminal
Bus
Input Current
Terminal
Terminal And
Symbol
V
IH
V
IL
V
CC
2
—
Min
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
30
Max
—
0.8
–1.5
—
—
—
0.5
0.5
100
20
Unit
V
V
V
V
V
µA
I
I
= –18 mA
I
OH
= –800 µA
I
OH
= –5.2 mA
I
OL
= 16 mA
I
OL
= 48 mA
V
I
= 5.5 V
V
I
= 2.7 V
V
I
= 0.5 V
Driver
I
I(bus)
= 0
Disabled I
I(bus)
= –12 mA
Driver
V
I(bus)
= –1.5 V to 0.4 V
Disabled V
I(bus)
= 0.4 V to 2.5 V
V
I(bus)
= 2.5 V to 3.7 V
V
I(bus)
= 3.7 V to 5 V
V
I(bus)
= 5 V to 5.5 V
µA
mA
V
CC
= 0,
V
I(bus)
= 0 V to 2.5 V
Conditions
V
IK
—
V
T+
– V
T–
0.4
V
OH
V
OL
I
I
I
IH
2.7
2.5
—
—
—
—
—
2.5
—
–1.3
0
—
0
0.7
Control Inputs I
IL
Voltage at Bus Port
V
I/O (bus)
Current Into Bus V
CC
ON
Port
I
I/O (bus)
–100
3.7
V
–1.5
—
–3.2
+2.5
–3.2
2.5
2.5
40
–75
mA
Short Circuit
Output Current
Supply Voltage
V
CC
OFF
Terminal
Bus
I
OS
I
CC
C
I/O (bus)
—
–15
–25
—
—
–125
100 mA
—
pF
No Load TE, DC, low
V
CC
= 5 V or 0 V, V
I/O
= 0 to 2 V,
f = 1 MHz
Bus port Capacitance
Note:
1. V
CC
= 5 V, Ta = 25°C
Switching Characteristics
(V
CC
= 5 V, Ta = 25°C)
Item
Propagation Delay
Time
Symbol
t
PLH
t
PHL
t
PLH
Input
Output
Terminal BUS
BUS
TE DC
Terminal
BUS
ATTN, EO1
REN, IFC
TE DC
and DAY
Terminal
Test
Min Typ Max Unit Circuit
Test Conditions
— 14 20 ns 1
C
L
= 30 pF
—
—
—
—
—
—
—
—
—
—
—
14
12
16
—
—
—
—
—
—
—
—
20
20
22
60
45
60
55
55
50
45
55
4
2
3
R
L
= 38.3
Ω
to 2.3 V
C
L
= 30 pF
R
L
= 240
Ω
to 5 V
C
L
= 15 pF
R
L
= 480
Ω
to 0 V
C
L
= 15 pF
R
L
= 38.3
Ω
to 2.3 V
C
L
= 15 pF
R
L
= 3 kΩ to 0 V
C
L
= 15 pF
R
L
= 280
Ω
to 5 V
t
PHL
Output Enable Time t
ZH
Output Disable Time t
HZ
Output Enable Time t
ZL
Output Disable Time t
LZ
Output Enable Time t
ZH
Output Disable Time t
HZ
Output Enable Time t
ZL
Output Disable Time t
LZ
Rev.2.00, Jul.16.2004, page 4 of 11
HD75161A
Switching Time Test Method
1. t
PLH
, t
PHL
2.3 V
R
L
=
38.3
Ω
Test Point
C
L
=
30 pF
Waveforms-1
t
r
Terminal Input
10 %
t
PLH
Bus Output
90 %
1.5 V
90 %
1.5 V
10 %
t
PHL
V
OH
2V
0.8 V
V
OL
t
f
3V
0V
Rev.2.00, Jul.16.2004, page 5 of 11
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