M54HC595D datasheet(2/15 Pages) STMICROELECTRONICS

No de pièce	M54HC595D

Description	RAD-HARD 8 BIT SHIFT REGISTER WITH OUTPUT LATCHES (3 STATE)

PDF	15 Pages

Scroll/Zoom	100%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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2 / 15 page

M54HC595

2/15

Figure 1: IEC Logic Symbols

Figure 2: Input And Output Equivalent Circuit

Table 1: Pin Description

Table 2: Truth Table

X: Don’t Care

PIN N°

SYMBOL

NAME AND FUNCTION

1, 2, 3, 4, 5,

6, 7, 15

QA to QH

Data Outputs

QH’

Serial Data Outputs

SCLR

Shift Register Clear Input

SCK

Shift Register Clock Input

Output Enable Input

Serial Data Input

RCK

Storage Register Clock

Input

GND

Ground (0V)

VCC

Positive Supply Voltage

INPUTS

OUTPUTS

SCK

SCLR

RCK

QA THRU QH OUTPUTS DISABLE

QA THRU QH OUTPUTS ENABLE

SHIFT REGISTER IS CLEARED

FIRST STAGE OF S.R. BECOMES "L" OTHER

STAGES STORE THE DATA OF PREVIOUS

STAGE, RESPECTIVELY

FIRST STAGE OF S.R. BECOMES "H" OTHER

STAGES STORE THE DATA OF PREVIOUS

STAGE, RESPECTIVELY

STATE OF S.R. IS NOT CHANGED

S.R. DATA IS STORED INTO STORAGE

STORAGE REGISTER STATE IS NOT CHANGED

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