Datasheet

74HC_HCT594_3 © NXP B.V. 2006. All rights reserved.
Product data sheet Rev. 03 — 20 December 2006 3 of 26
NXP Semiconductors
74HC594; 74HCT594
8-bit shift register with output register
Fig 2. Logic symbol Fig 3. IEC logic symbol
mbc319
STCPSHCP
STRSHR
DS
Q7S
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
14
10 13
11 12
15
9
1
2
3
4
5
6
7
mbc322
SHCP
STCP
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
SHR
STR
DS
15
9
1
2
3
4
5
6
7
1D 2D
C1/
10
11
14
C2
12
13
R2
SRG8R1
Q7S
Fig 4. Logic diagram
mbc321
Q0 Q1 Q2 Q3 Q4 Q5 Q6
DS
SHCP
SHR
STCP
STR
D
Q
CP
FFSH
0
R
STAGE 0
D
Q
CP
FFST
0
R
STAGES 1 TO 6
DQ
Q7
DQ
CP
FFSH
7
R
STAGE 7
D
Q
CP
FFST
7
R
Q7S