DP5380N datasheet(5/32 Pages) NSC

Part #	DP5380N

Description	Asynchronous SCSI Interface (ASI)

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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5 / 32 page

20 Pin Descriptions (Continued)

Symbol

DIP

PCC

Type

Function

REQ

Request

driven by the TARGET and received by the INITIATOR as part of the REQ

ACK handshake

InputOutput

driven by the TARGET to control the direction of transfers on the

SCSI bus This signal also distinguishes between selection and reselection

CommandData

driven by the TARGET to indicate whether command or data bytes

are being transferred

MSG

Message

driven by the TARGET during message phase to identify message bytes

on the bus

VCC

VCC GND a

5V DC is required Because of very large switching currents good

decoupling and power distribution is mandatory

GND

12 13

21 Connection Diagrams

TLF9756 – 4

Order Number DP5380N

See NS Package Number N40A

TLF9756 – 5

Order Number DP5380V

See NS Package Number V44A

DP5380N Datasheet(PDF) 5 Page - National Semiconductor (TI)