MC74HC165A_05 Datasheet, PDF (2/12 Pages) ON Semiconductor – 8−Bit Serial or Parallel−Input/ Serial−Output Shift Register High−Performance Silicon−Gate CMOS

MC74HC165A
SERIAL SHIFT/
PARALLEL LOAD
1
CLOCK 2
E3
F4
G5
H6
Q_H 7
GND 8
16 V_CC
15 CLOCK INHIBIT
14 D
13 C
12 B
11 A
10 S_A
9 Q_H
Figure 1. Pin Assignment
PARALLEL
DATA
INPUTS
A ¹¹
B ¹²
C ¹³
D ¹⁴
E3
F4
G5
SERIAL
DATA
INPUT
H6
S_A ¹⁰
SERIAL SHIFT/ 1
PARALLEL LOAD
CLOCK ²
CLOCK INHIBIT ¹⁵
9 _QH
7
Q_H
SERIAL
DATA
OUTPUTS
PIN 16 = V_CC
PIN 8 = GND
Figure 2. Logic Diagram
Serial Shift/
Parallel Load
L
H
H
H
H
H
H
H
Inputs
Clock
Clock
Inhibit
X
X
L
L
L
L
X
H
H
X
L
L
X = don’t care
FUNCTION TABLE
Internal Stages
Output
S_A
A−H
Q_A
Q_B
Q_H
X
a…h
a
b
h
L
X
L
Q_An
Q_Gn
H
X
H
Q_An
Q_Gn
L
X
L
Q_An
Q_Gn
H
X
H
Q_An
Q_Gn
X
X
X
X
No Change
X
X
No Change
Q_An − Q_Gn = Data shifted from the preceding stage
Operation
Asynchronous Parallel Load
Serial Shift via Clock
Serial Shift via Clock Inhibit
Inhibited Clock
No Clock
ORDERING INFORMATION
Device
Package
Shipping^†
MC74HC165AN
PDIP−16
500 Units / Rail
MC74HC165ANG
PDIP−16
(Pb−Free)
500 Units / Rail
MC74HC165AD
SOIC−16
48 Units / Rail
MC74HC165ADG
SOIC−16
(Pb−Free)
48 Units / Rail
MC74HC165ADR2
SOIC−16
2500 Units / Reel
MC74HC165ADR2G
SOIC−16
(Pb−Free)
2500 Units / Reel
MC74HC165ADTR2
TSSOP−16*
2500 Units / Reel
MC74HC165ADTR2G
TSSOP−16*
2500 Units / Reel
MC74HC165AF
SOEIAJ−16
50 Units / Rail
MC74HC165AFG
SOEIAJ−16
(Pb−Free)
50 Units / Rail
MC74HC165AFEL
SOEIAJ−16
2000 Units / Reel
MC74HC165AFELG
SOEIAJ−16
(Pb−Free)
2000 Units / Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
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