Datasheet > TC74VHC257FK_12

TC74VHC257FK_12

更新时间： 2024-09-13 12:23:03

品牌	Logo	应用领域
东芝 - TOSHIBA		复用器
页数	文件大小	规格书
9页	224K
描述
Quad 2-Channel Multiplexer (3-state)

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中文翻译

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数据手册

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TC74VHC257FK_12 数据手册

TC74VHC257F/FT/FK

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC74VHC257F,TC74VHC257FT,TC74VHC257FK

Quad 2-Channel Multiplexer (3-state)

TC74VHC257F

TC74VHC257FT

TC74VHC257FK

The TC74VHC257 is an advanced high speed CMOS

MULTIPLEXER fabricated with silicon gate C²MOS technology.

It achieves the high speed operation similar to equivalent

Bipolar Schottky TTL while maintaining the CMOS low power

dissipation.

It is composed of four independent 2-channel multiplexers with

common SELECT and OUTPUT ENABLE ( OE ).

If OE is set low, the outputs are held in a high-impedance

state. When SELECT is set low, “A” data inputs are enabled.

Conversely, when SELECT is high, “B” data inputs are

enabled.

An input protection circuit ensures that 0 to 5.5 V can be

applied to the input pins without regard to the supply voltage.

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

supply systems such as battery back up. This circuit prevents

device destruction due to mismatched supply and input voltages.

Features

•

High speed: t = 3.6 ns (typ.) at V

= 5 V

Low power dissipation: I

= 4 μA (max) at Ta = 25°C

High noise immunity: V

= V

= 28% V

(min)

NIH

NIL

Power down protection is provided on all inputs.

∼

−

Balanced propagation delays: t

pHL

pLH

Wide operating voltage range: V

= 2 to 5.5 V

CC (opr)

Low noise: V

= 0.8 V (max)

OLP

Pin and function compatible with 74ALS257

Weight

SOP16-P-300-1.27A

: 0.18 g (typ.)

TSSOP16-P-0044-0.65A : 0.06 g (typ.)

VSSOP16-P-0030-0.50

: 0.02 g (typ.)

2012-02-29

12 3 4 5 6 7...9

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