Philips Semiconductors
Product specification
Octal D-type transparent latch; 3-state
FUNCTION TABLE
INPUTS
OPERATING
MODES
OE LE D
n
enable and
read
register
(transparent
mode)
latch and
read register
latch register
and disable
outputs
Fig.4 Functional diagram.
Notes
L
L
H
H
L
H
74HC/HCT373
INTERNAL
LATCHES
L
H
OUTPUTS
Q
0
to Q
7
L
H
L
L
H
H
L
L
X
X
l
h
X
X
L
H
X
X
L
H
Z
Z
1. H = HIGH voltage level
h = HIGH voltage level one set-up time prior to the
HIGH-to-LOW LE transition
L = LOW voltage level
I = LOW voltage level one set-up time prior to the
HIGH-to-LOW LE transition
X = don’t care
Z = high impedance OFF-state
Fig.5 Logic diagram (one latch).
Fig.6 Logic diagram.
September 1993
4
PHILIPS [ NXP SEMICONDUCTORS ]
