7403 datasheet(2/28 Pages) PHILIPS

2 / 28 page

September 1993

Philips Semiconductors

Product speciﬁcation

4-Bit x 64-word FIFO register; 3-state

74HC/HCT7403

FEATURES

• Synchronous or asynchronous

operation

• 3-state outputs

• 30 MHz (typical) shift-in and

shift-out rates

• Readily expandable in word and bit

dimensions

• Pinning arranged for easy board

layout: input pins directly opposite

output pins

• Output capability: driver (8 mA)

• ICC category: LSI.

APPLICATIONS

• High-speed disc or tape controller

• Communications buffer.

GENERAL DESCRIPTION

The 74HC/HCT7403 are high-speed

Si-gate CMOS devices. They are

specified in compliance with JEDEC

standard no.7A.

The “7403” is an expandable, First-In

First-Out (FIFO) memory organized

as 64 words by 4 bits. A guaranteed

15 MHz data-rate makes it ideal for

high-speed applications. A higher

data-rate can be obtained in

applications where the status flags

are not used (burst-mode).

With separate controls for shift-in (SI)

and shift-out (SO), reading and

writing operations are completely

independent, allowing synchronous

and asynchronous data transfers.

Additional controls include a

master-reset input (MR), an output

enable input (OE) and flags. The

data-in-ready (DIR) and

data-out-ready (DOR) flags indicate

the status of the device.

QUICK REFERENCE DATA

GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns.

Note

1. For HC the condition is VI = GND to VCC.

For HCT the condition is VI = GND to VCC −1.5 V.

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

TYP.

UNIT

HCT

tPHL/tPLH

propagation delay SO,

SI to DIR and DOR

CL = 15 pF;

VCC = 5 V

fmax

maximum clock

frequency

MHz

input capacitance

3.5

CPD

power dissipation

capacitance per

package

note 1

475

490

EXTENDED

TYPE NUMBER

PACKAGE

PINS

PIN POSITION

MATERIAL

CODE

74HC/HCT7403N

DIL

plastic

SOT38Z

74HC/HCT7403D

SO16L

plastic

SOT162

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