74HC164PW 查看數據表（PDF） - Philips Electronics
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74HC164PW Datasheet PDF : 24 Pages
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Philips Semiconductors
74HC164; 74HCT164
8-bit serial-in, parallel-out shift register
Table 10: Dynamic characteristics for 74HCT164 …continued
GND = 0 V; tr = tf = 6 ns; CL = 50 pF; test circuit see Figure 10; unless otherwise specified
Symbol Parameter
Conditions
Min
Typ
Max
tW
clock pulse width;
VCC = 4.5 V;
HIGH or LOW
see Figure 7
27
-
-
master reset pulse width; VCC = 4.5 V;
LOW
see Figure 8
27
-
-
trem
removal time MR to CP VCC = 4.5 V;
see Figure 8
24
-
-
tsu
set-up time
VCC = 4.5 V;
DSA and DSB to CP
see Figure 9
18
-
-
th
hold time DSA and DSB VCC = 4.5 V;
to CP
see Figure 9
4
-
-
fmax
maximum clock pulse VCC = 4.5 V;
frequency
see Figure 7
18
-
-
Unit
ns
ns
ns
ns
ns
MHz
VI
CP input
GND
VOH
Qn output
VOL
1/ fmax
VM
tW
t PHL
VM
t PLH
001aac426
(1) 74HC164: VM = 50 %; VI = GND to VCC.
74HCT164: VM = 1.3 V; VI = GND to 3 V.
Fig 7. Waveforms showing the clock (CP) to output (Qn) propagation delays, the clock
pulse width, the output transition times and the maximum clock frequency
9397 750 14693
Product data sheet
Rev. 03 — 4 April 2005
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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