Datasheet

74AHC_AHCT164_3 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 03 — 24 April 2008 11 of 18
NXP Semiconductors
74AHC164; 74AHCT164
8-bit serial-in/parallel-out shift register
Measurement points are given in Table 8.
The shaded areas indicate when the input is permitted to change for predictable output performance.
V
OL
and V
OH
are typical voltage output levels that occur with the output load.
Fig 9. Data set-up and hold times
001aaf612
GND
GND
t
h
t
su
t
h
t
su
V
M
V
M
V
M
V
I
V
OH
V
OL
V
I
Qn output
CP input
DSA, DSB input
Table 8. Measurement points
Type Input Output
V
M
V
M
74AHC164 0.5 × V
CC
0.5 × V
CC
74AHCT164 1.5 V 0.5 × V
CC