Datasheet > 74VHCT245A_99

74VHCT245A_99

更新时间： 2024-02-07 05:54:22

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		驱动器
页数	文件大小	规格书
6页	89K
描述
Octal Buffer/Line Driver with 3-STATE Outputs

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74VHCT245A_99 数据手册

March 1997

Revised March 1999

74VHCT245A

Octal Buffer/Line Driver with 3-STATE Outputs

supply voltage. These circuits prevent device destruction

General Description

due to mismatched supply and input/output voltages. This

device can be used to interface 5V to 3V systems and two

supply systems such as battery back up.

The VHCT245A is an advanced high speed CMOS octal

bus transceiver fabricated with silicon gate CMOS technol-

ogy. It achieves high speed operation similar to equivalent

Bipolar Schottky TTL while maintaining the CMOS low

power dissipation. The VHCT245A is intended for bidirec-

tional asynchronous communication between data busses.

The direction of data transmission is determined by the

level of the T/R input. The enable input can be used to dis-

able the device so that the busses are effectively isolated.

Note 1: Outputs in OFF-State

Features

■ High Speed:

■ Power Down Protection on Inputs and Outputs

■ Low Power Dissipation: _CC= 4 µA (Max) @ T_A= 25°C

t_PD= 5.4 ns (typ) at V_CC= 5V

Protection circuits ensure that 0V to 7V can be applied to

the input and output (Note 1) pins without regard to the

■ Pin and Function Compatible with 74HCT245

Ordering Code:

Order Number

74VHCT245AM

74VHCT245ASJ

74VHCT245AMTC

74VHCT245AN

Package Number

M20B

Package Description

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

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

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

20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

M20D

MTC20

N20A

Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Logic Symbol

Connection Diagram

IEEE/IEC

Pin Descriptions

Truth Table

Pin Names

Description

Inputs

Outputs

Output Enable Input

T/R

Transmit/Receive Input

Bus B Data to Bus A

Bus A Data to Bus B

HIGH-Z State

A₀–A₇

B₀–B₇

Side A Inputs or 3-STATE Outputs

Side B Inputs or 3-STATE Outputs

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

DS500004.prf

www.fairchildsemi.com

12 3 4 5 6

中文翻译

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74VHCT245AFT	TOSHIBA	获取价格	74VHC Series
74VHCT245AM	STMICROELECTRONICS	获取价格	OCTAL BUS TRANSCEIVER 3-STATE
74VHCT245AM	FAIRCHILD	获取价格	Octal Buffer/Line Driver with 3-STATE Outputs
74VHCT245AM	ONSEMI	获取价格	带 3 态输出的八路缓冲器/线路驱动器
74VHCT245AMTC	ONSEMI	获取价格	带 3 态输出的八路缓冲器/线路驱动器
74VHCT245AMTC	FAIRCHILD	获取价格	Octal Buffer/Line Driver with 3-STATE Outputs
74VHCT245AMTCX	ONSEMI	获取价格	带 3 态输出的八路缓冲器/线路驱动器
74VHCT245AMTCX_NL	FAIRCHILD	获取价格	Bus Transceiver, AHCT/VHCT Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, 4.40 MM, MO-1
74VHCT245AMTR	STMICROELECTRONICS	获取价格	OCTAL BUS TRANSCEIVER (3-STATE)
74VHCT245AMX	ONSEMI	获取价格	带 3 态输出的八路缓冲器/线路驱动器