Datasheet > 74ACT257TTR

74ACT257TTR

更新时间： 2024-09-12 23:24:03

品牌	Logo	应用领域
其他 - ETC		复用器逻辑集成电路光电二极管
页数	文件大小	规格书
11页	78K
描述
2-Input Digital Multiplexer

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中文翻译

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数据手册

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74ACT257TTR 数据手册

74ACT257

QUAD 2 CHANNEL MULTIPLEXER (3-STATE)

■

HIGH SPEED: t = 5 ns (TYP.) at V = 5V

PD CC

LOW POWER DISSIPATION:

= 4 µA(MAX.) at T =25°C

■

COMPATIBLE WITH TTL OUTPUTS

= 2V (MIN.), V = 0.8V (MAX.)

50Ω TRANSMISSION LINE DRIVING

CAPABILITY

DIP

SOP

TSSOP

T & R

SYMMETRICAL OUTPUT IMPEDANCE:

|I | = I = 24mA (MIN)

BALANCED PROPAGATION DELAYS:

ORDER CODES

PACKAGE

PLH

PHL

TUBE

OPERATING VOLTAGE RANGE:

(OPR) = 4.5V to 5.5V

DIP

SOP

74ACT257B

74ACT257M

74ACT257MTR

74ACT257TTR

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 257

IMPROVED LATCH-UP IMMUNITY

TSSOP

SELECT input is held LOW, ”A” data is selected;

when SELECT input is held HIGH, ”B” data is

selected.

The device is designed to interface directly High

Speed CMOS systems with TTL, NMOS and

CMOS output voltage levels.

DESCRIPTION

The 74ACT257 is an advanced high-speed CMOS

QUAD 2-CHANNEL MULTIPLEXER (3-STATE)

fabricated with sub-micron silicon gate and

double-layer metal wiring C MOS tecnology.

All inputs and outputs are equipped with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

It is composed of an independent 2-channel

multiplexer with common SELECT and ENABLE

(OE)inputs. It is a non-inverting multiplexer. When

the ENABLE input is held HIGH, the outputs are

forced to a high impedance state. When the

PIN CONNECTION AND IEC LOGIC SYMBOLS

April 2001

1/11

12 3 4 5 6 7...11

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与74ACT257TTR相关器件

型号	品牌	获取价格	描述	数据表
74ACT258	FAIRCHILD	获取价格	Quad 2-Input Multiplexer with 3-STATE Outputs
74ACT258_07	FAIRCHILD	获取价格	Quad 2-Input Multiplexer with 3-STATE Outputs
74ACT258FC	NSC	获取价格	IC ACT SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, CDFP16, CERAMIC, FP-16,
74ACT258FCQR	NSC	获取价格	IC ACT SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, CDFP16, CERAMIC, FP-16,
74ACT258FCT	FAIRCHILD	获取价格	Multiplexer, ACT Series, 4-Func, 2 Line Input, 1 Line Output, Inverted Output, CMOS, CDFP1
74ACT258FCTR	FAIRCHILD	获取价格	Multiplexer, ACT Series, 4-Func, 2 Line Input, 1 Line Output, Inverted Output, CMOS, CDFP1
74ACT258LC	NSC	获取价格	ACT SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, CQCC20, CERAMIC, LCC-20
74ACT258LCQR	NSC	获取价格	IC ACT SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, INVERTED OUTPUT, CQCC20, CERAMIC, LCC-20
74ACT258LCX	FAIRCHILD	获取价格	Multiplexer, ACT Series, 4-Func, 2 Line Input, 1 Line Output, Inverted Output, CMOS, CQCC2
74ACT258LCXR	FAIRCHILD	获取价格	暂无描述