April 1988
Revised April 1999
7
4F322 O
c
t
a
l

Seri
al
/Par
all
e
l Regi
ster

wi
th Sign Exten
d
© 1999 Fairchild Semiconductor Corporation DS009516.prf www.fairchildsemi.com
74F322
Octal Serial/Parallel Register with Sign Extend
General Description
The 74F322 is an 8-bit shift register with provision for either
serial or parallel loading and with 3-STATE parallel outputs
plus a bi-state serial output. Parallel data inputs and paral-
lel outputs are multiplexed to minimize pin count. State
changes are initiated by the rising edge of the clock. Four
synchronous modes of operation are possible: hold (store),
shift right with serial entry, shift right with sign extend and
parallel load. An asynchronous Master Reset (MR) input
overrides clocked operation and clears the register.
Features
a73 Multiplexed parallel I/O ports
a73 Separate serial input and output
a73 Sign extend function
a73 3-STATE outputs for bus applications

Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
IEEE/IEC
Connection Diagram
Order Number Package Number Package Description
74F322PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide