Datasheet

74HC_HCT594_3 © NXP B.V. 2006. All rights reserved.
Product data sheet Rev. 03 — 20 December 2006 5 of 26
NXP Semiconductors
74HC594; 74HCT594
8-bit shift register with output register
6.2 Pin description
Fig 7. Pin configuration SSOP16 Fig 8. Pin configuration DIP16
74HC594
74HCT594
Q1 V
CC
Q2 Q0
Q3 DS
Q4 STR
Q5 STCP
Q6 SHCP
Q7 SHR
GND Q7S
001aaf613
1
2
3
4
5
6
7
8
10
9
12
11
14
13
16
15
74HC594
74HCT594
Q1 V
CC
Q2 Q0
Q3 DS
Q4 STR
Q5 STCP
Q6 SHCP
Q7 SHR
GND Q7S
001aaf614
1
2
3
4
5
6
7
8
10
9
12
11
14
13
16
15
Table 2. Pin description
Symbol Pin Description
Q1 1 parallel data output 1
Q2 2 parallel data output 2
Q3 3 parallel data output 3
Q4 4 parallel data output 4
Q5 5 parallel data output 5
Q6 6 parallel data output 6
Q7 7 parallel data output 7
GND 8 ground (0 V)
Q7S 9 serial data output
SHR 10 shift register reset (active LOW)
SHCP 11 shift register clock input
STCP 12 storage register clock input
STR 13 storage register reset (active LOW)
DS 14 serial data input
Q0 15 parallel data output 0
V
CC
16 supply voltage