MC74HC595A Datasheet, PDF (1/12 Pages) ON Semiconductor – 8-Bit Serial-Input/Serial or Parallel-Output Shift Register with Latched 3-State Outputs

MC74HC595A
8-Bit Serial-Input/Serial or
Parallel-Output Shift
Register with Latched
3-State Outputs
High–Performance Silicon–Gate CMOS
The MC74HC595A consists of an 8–bit shift register and an 8–bit
D–type latch with three–state parallel outputs. The shift register
accepts serial data and provides a serial output. The shift register also
provides parallel data to the 8–bit latch. The shift register and latch
have independent clock inputs. This device also has an asynchronous
reset for the shift register.
The HC595A directly interfaces with the SPI serial data port on
CMOS MPUs and MCUs.
• Output Drive Capability: 15 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
• Chip Complexity: 328 FETs or 82 Equivalent Gates
• Improvements over HC595
— Improved Propagation Delays
— 50% Lower Quiescent Power
— Improved Input Noise and Latchup Immunity
SERIAL
DATA
INPUT
A ¹⁴
SHIFT 11
CLOCK
RESET ¹⁰
LATCH 12
CLOCK
OUTPUT 13
ENABLE
LOGIC DIAGRAM
SHIFT
REGISTER
LATCH
15 _QA
1 _QB
2 _QC
3 _QD
4 _QE
5 _QF
6 _QG
7 _QH
PARALLEL
DATA
OUTPUTS
9 _SQH
SERIAL
DATA
OUTPUT
VCC = PIN 16
GND = PIN 8
http://onsemi.com
16
1
16
1
PDIP–16
N SUFFIX
CASE 648
SO–16
D SUFFIX
CASE 751B
MARKING
DIAGRAMS
16
MC74HC595AN
AWLYYWW
1
16
HC595A
AWLYWW
1
16
16
1
TSSOP–16
DT SUFFIX
CASE 948F
HC
595A
ALYW
1
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
PIN ASSIGNMENT
QB 1
QC 2
QD 3
QE 4
QF 5
QG 6
QH 7
GND 8
16 VCC
15 QA
14 A
13 OUTPUT ENABLE
12 LATCH CLOCK
11 SHIFT CLOCK
10 RESET
9 SQH
ORDERING INFORMATION
Device
Package Shipping
MC74HC595AN
PDIP–16 2000 / Box
MC74HC595AD
SOIC–16 48 / Rail
MC74HC595ADR2
SOIC–16 2500 / Reel
MC74HC595ADT
TSSOP–16 96 / Rail
MC74HC595ADTR2 TSSOP–16 2500 / Reel
© Semiconductor Components Industries, LLC, 2000
1
March, 2000 – Rev. 8
Publication Order Number:
MC74HC595A/D