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74ACT1284

更新时间： 2024-11-24 23:00:15

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
7页	229K
描述
IEEE 1284 Transceiver

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数据手册

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74ACT1284 数据手册

June 1996

Revised November 1999

74ACT1284

IEEE 1284 Transceiver

General Description

Features

The 74ACT1284 contains four non-inverting bidirectional

buffers and three non-inverting buffers with open Drain out-

puts and high drive capability on the B Ports. It is intended

to provide a standard signaling method for a bi-direction

parallel peripheral in an Extended Capabilities Port mode

(ECP).

■ TTL-compatible inputs

■ A Ports have standard 4 mA totem pole outputs

■ Typical input hysteresis of 0.5V

■ B Port high drive source/sink capability of 14 mA

■ Bidirectional non-inverting buffers

■ Supports IEEE P1284 Level 1 and Level 2 signaling

standards for bidirectional parallel communications

between personal computers and printing peripherals

The HD (active HIGH) input pin enables the B Ports to

switch from open Drain to a high drive totem pole output,

capable of sourcing 14 mA on all seven buffers. The DIR

input determines the direction of data flow on the bidirec-

tional buffers. DIR (active HIGH) enables data flow from A

Ports to B Ports. DIR (active LOW) enables data flow from

B Ports to A Ports.

■ B Port outputs in High Impedance mode during power

down

■ Guaranteed 4000V minimum ESD protection

Ordering Code:

Order Number Package Number

Package Description

74ACT1284SC

74ACT1284MSA

74ACT1284MTC

M20B

MSA20

MTC20

20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide

20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide

20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Logic Symbol

Connection Diagram

Pin Descriptions

Pin Names

Description

High Drive Enable input (Active HIGH)

Direction Control Input

Side A Inputs or Outputs

Side B Inputs or Outputs

Side A Inputs

DIR

₁- A₄

₁- B₄

₅- A₇

B₅- B₇

Side B Outputs

FACT is a trademark of Fairchild Semiconductor Corporation.

DS011683

www.fairchildsemi.com

12 3 4 5 6 7

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与74ACT1284相关器件

型号	品牌	获取价格	描述	数据表
74ACT1284_00	FAIRCHILD	获取价格	IEEE 1284 Transceiver
74ACT1284MSA	FAIRCHILD	获取价格	IEEE 1284 Transceiver
74ACT1284MSAC	TI	获取价格	LINE TRANSCEIVER, PDSO20, EIAJ, PLASTIC, SSOP-20
74ACT1284MSACX	TI	获取价格	LINE TRANSCEIVER, PDSO20, EIAJ, PLASTIC, SSOP-20
74ACT1284MSAX_NL	FAIRCHILD	获取价格	Line Transceiver, 7 Func, 7 Driver, 7 Rcvr, CMOS, PDSO20, 5.30 MM, EIAJ TYPE2, SSOP-20
74ACT1284MTC	FAIRCHILD	获取价格	IEEE 1284 Transceiver
74ACT1284MTCX	ETC	获取价格	4-Bit Bus Transceiver
74ACT1284SC	FAIRCHILD	获取价格	IEEE 1284 Transceiver
74ACT1284SCX	TI	获取价格	LINE TRANSCEIVER, PDSO20, SOIC-20
74ACT1284SCX_NL	FAIRCHILD	获取价格	Line Transceiver, 7 Func, 7 Driver, 7 Rcvr, CMOS, PDSO20, 0.300 INCH, MS-013, SOIC-20