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PDF HD75161A Data sheet ( Hoja de datos )
| Número de pieza | HD75161A | |
| Descripción | Octal General Purpose Interface Bus Transceivers | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD75161A
Octal General Purpose Interface Bus Transceivers
ADE-205-591 (Z)
1st. Edition
Dec. 2000
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 VCC = 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.
1 page  
Logic Diagram
DC
TE
ATN
EOI
SRQ
REN
IFC
DAV
NDAC
NRFD
HD75161A
D ATN
R
D EOI
R
D SRQ
R
D REN
R
D IFC
R
D DAV
R
D NDAC
R
D NRFD
R
5
5 Page 
Test
Point
5V
S2
C L=
15 pF
R L=
280 Ω
R L=
3 kΩ
S1
HD75161A
Control Input
10 %
tr
90 %
1.5 V
tf
90 %
1.5 V
10 %
3V
0V
Terminal Output
S1 Closed
S2 Open
tZH
1.5 V
tHZ
90 %
VOH
0V
tZL tLZ
Terminal Output
S1 Open
S2 Closed
1.5 V
10 %
5V
VOL
Notes:
1. The pulse generator has the following characteristics: PRR = 1 MHz, 50% duty cycle, tr ≤ 6
ns, tf ≤ 6 ns, Zout = 50 Ω
2. CL includes probe and jig capacitance.
3. All diodes are 1S2074(H).
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet HD75161A.PDF ] | |
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