IW4034B
8-S
TAGE
S
TATIC
B
IDIRECTIONAL
P
ARALLEL
/
S
ERIAL
I
NPUT
/O
UTPUT
B
US
R
EGISTER
High-Voltage Silicon-Gate CMOS
The IW4034B is a static eight-stage parallel-or serial-input
parallel-output register. It can be used to:
1) bidirectionally transfer parallel information between two
buses, 2) convert serial data to parallel form and direct the
parallel data to either of two buses, 3) store (recirculate) parallel
data, or 4) accept parallel data from either of two buses and
convert that data to serial form. Inputs that control the operations
include a single-phase CLOCK (CL), A DATA ENABLE (AE),
ASYNCHRONOUS/SYNCHRONOUS (A/S), A-BUS-TO-B-BUS/
B-BUS-TO-A-BUS (A/B), and PARALLEL/SERIAL (P/S).
ORDERING INFORMATION
Data inputs include 16 bidirectional parallel data lines of which
IW4034BN Plastic
the eight A data lines are inputs (3-state outputs) and the B data
IW4034BDW SOIC
lines are outputs (inputs) dependung on the signal level on the
T
A
= -55° to 125° C for all
A/B input. In addition, an input for SERIAL DATA is also
packages
provided.
All register stages are D-type master-slave flip-flops with separate master and slave clock inputs
generated internally to allow synchronous or asynchronous data transfer from master to slave.
•
Operating Voltage Range: 3.0 to 18 V
•
Maximum input current of 1
µA
at 18 V over full package-temperature range; 100 nA at 18 V
and 25°C
•
Noise margin (over full package temperature range):
1.0 V min @ 5.0 V supply
2.0 V min @ 10.0 V supply
2.5 V min @ 15.0 V supply
PIN ASSIGNMENT
LOGIC DIAGRAM
PIN 24=V
CC
PIN 12= GND
1
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