HEF40194 Philips Semiconductors, HEF40194 Datasheet - Page 2

• Manufacturer Part Number: HEF40194
• Description: 4-bit bidirectional universal shift register
• Manufacturer: Philips Semiconductors

Philips Semiconductors
DESCRIPTION
The HEF40194B is a 4-bit bidirectional shift register with
two mode control inputs (S
serial data shift left input (D
(D
asynchronous master reset input (MR), and four buffered
parallel outputs (O
stages and forces O
conditions. When MR is HIGH, the operation mode is
controlled by S
PINNING
January 1995
S
P
D
D
CP
MR
O
0
0
SR
SR
SL
4-bit bidirectional universal shift register
0
, S
to P
to O
), four parallel data inputs (P
1
3
3
mode control inputs
parallel data inputs
serial data shift right input
serial data shift left input
clock input (LOW to HIGH edge-triggered)
master reset input (active LOW)
buffered parallel outputs
0
Fig.1 Functional diagram.
and S
0
0
to O
to O
1
as shown in the function table.
3
). When LOW, MR resets all
3
0
SL
LOW, overriding all other input
and S
), a serial data shift right input
0
1
to P
), a clock input (CP), a
3
), an overriding
2
Serial and parallel operation are edge-triggered on the
LOW to HIGH transition of CP. The inputs at which the
data are to be entered and S
set-up time before the LOW to HIGH transition of CP.
FAMILY DATA, I
See Family Specifications
HEF40194BP(N): 16-lead DIL; plastic
HEF40194BD(F): 16-lead DIL; ceramic (cerdip)
HEF40194BT(D): 16-lead SO; plastic
( ): Package Designator North America
DD
Fig.2 Pinning diagram.
LIMITS category MSI
(SOT38-1)
(SOT74)
(SOT109-1)
0
, S
1
must be stable for a
HEF40194B
Product specification
MSI