MC74LCX574 查看數據表（PDF） - Motorola => Freescale

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MC74LCX574

Low-Voltage CMOS Octal D-Type Flip-Flop Flow Through Pinout

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

Low-Voltage CMOS

Octal D-Type Flip-Flop

Flow Through Pinout

With 5V-Tolerant Inputs and Outputs

(3-State, Non-Inverting)

The MC74LCX574 is a high performance, non–inverting octal D–type

flip–flop operating from a 2.7 to 3.6V supply. High impedance TTL

compatible inputs significantly reduce current loading to input drivers

while TTL compatible outputs offer improved switching noise

performance. A VI specification of 5.5V allows MC74LCX574 inputs to be

safely driven from 5V devices.

The MC74LCX574 consists of 8 edge–triggered flip–flops with

individual D–type inputs and 3–state true outputs. The buffered clock and

buffered Output Enable (OE) are common to all flip–flops. The eight

flip–flops will store the state of individual D inputs that meet the setup and

hold time requirements on the LOW–to–HIGH Clock (CP) transition. With

the OE LOW, the contents of the eight flip–flops are available at the

outputs. When the OE is HIGH, the outputs go to the high impedance

state. The OE input level does not affect the operation of the flip–flops.

The LCX574 flow through design facilitates easy PC board layout.

• Designed for 2.7 to 3.6V VCC Operation

• 5V Tolerant — Interface Capability With 5V TTL Logic

• Supports Live Insertion and Withdrawal

• IOFF Specification Guarantees High Impedance When VCC = 0V

• LVTTL Compatible

• LVCMOS Compatible

• 24mA Balanced Output Sink and Source Capability

• Near Zero Static Supply Current in All Three Logic States (10µA)

Substantially Reduces System Power Requirements

• Latchup Performance Exceeds 500mA

• ESD Performance: Human Body Model >2000V; Machine Model >200V

Pinout: 20–Lead (Top View)

VCC O0 O1 O2 O3 O4 O5 O6 O7 CP

20 19 18 17 16 15 14 13 12 11

1 2 3 4 5 6 7 8 9 10

OE D0 D1 D2 D3 D4 D5 D6 D7 GND

MC74LCX574

LOW–VOLTAGE CMOS

OCTAL D–TYPE FLIP–FLOP

20

1

20

1

20

1

20

1

DW SUFFIX

PLASTIC SOIC

CASE 751D–04

M SUFFIX

PLASTIC SOIC EIAJ

CASE 967–01

SD SUFFIX

PLASTIC SSOP

CASE 940C–03

DT SUFFIX

PLASTIC TSSOP

CASE 948E–02

PIN NAMES

Pins

Function

OE

CP

D0–D7

O0–O7

Output Enable Input

Clock Pulse Input

Data Inputs

3–State Outputs

9/95

© Motorola, Inc. 1996

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