Datasheet > CD54HC251_14

CD54HC251_14

更新时间： 2024-11-03 02:58:43

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
11页	271K
描述
High-Speed CMOS Logic 8-Input Multiplexer, Three-State

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CD54HC251_14 数据手册

CD54HC251, CD74HC251,

CD54HCT251, CD74HCT251

Data sheet acquired from Harris Semiconductor

SCHS169C

High-Speed CMOS Logic

8-Input Multiplexer, Three-State

November 1997 - Revised October 2003

Features

Description

• Selects One of Eight Binary Data Inputs

• Three-State Output Capability

• True and Complement Outputs

The ’HC251 and ’HCT251 are 8-channel digital multiplexers

with three-state outputs, fabricated with high-speed silicon-

gate CMOS technology. Together with the low power

consumption of standard CMOS integrated circuits, they

possess the ability to drive 10 LSTTL loads. The three-state

feature makes them ideally suited for interfacing with bus

lines in a bus-oriented system.

[ /Title

(CD74

HC251

• Typical (Data to Output) Propagation Delay of 14ns at

= 5V, C = 15pF, T = 25 C

L A

CD74

HCT25

/Sub-

ject

(High

Speed

CMOS

Logic

8-Input

Multi-

plexer;

Three-

• Fanout (Over Temperature Range)

This multiplexer features both true (Y) and complement (Y)

outputs as well as an output enable (OE) input. The OE must

- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads be at a low logic level to enable this device. When the OE

input is high, both outputs are in the high-impedance state.

• Wide Operating Temperature Range . . . -55 C to 125 C

• Balanced Propagation Delay and Transition Times

When enabled, address information on the data select inputs

determines which data input is routed to the Y and Y

outputs. The ’HCT251 logic family is speed, function, and

pin-compatible with the standard ’LS251.

• Signiﬁcant Power Reduction Compared to LSTTL

Logic ICs

Ordering Information

• Alternate Source is Philips

• HC Types

TEMP. RANGE

- 2V to 6V Operation

PART NUMBER

CD54HC251F3A

CD54HCT251F3A

CD74HC251E

( C)

PACKAGE

16 Ld CERDIP

16 Ld PDIP

16 Ld SOIC

16 Ld PDIP

16 Ld SOIC

- High Noise Immunity: N = 30%, N = 30% of V

-55 to 125

at V

= 5V

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

CD74HC251M

V = 0.8V (Max), V = 2V (Min)

IL IH

CD74HC251MT

CD74HC251M96

CD74HCT251E

CD74HCT251M

CD74HCT251MT

CD74HCT251M96

- CMOS Input Compatibility, I ≤ 1µA at V , V

OL OH

Pinout

CD54HC251, CD54HCT251

(CERDIP)

CD74HC251, CD74HCT251

(PDIP, SOIC)

TOP VIEW

NOTE: When ordering, use the entire part number. The sufﬁx 96

denotes tape and reel. The sufﬁx T denotes a small-quantity reel of

250.

16 V

15 I

14 I

13 I

12 I

11 S0

10 S1

GND

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

12 3 4 5 6 7...11

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与CD54HC251_14相关器件

型号	品牌	获取价格	描述	数据表
CD54HC251E	ETC	获取价格	Logic IC
CD54HC251EN	ETC	获取价格	Logic IC
CD54HC251F	TI	获取价格	High-Speed CMOS Logic 8-Input Multiplexer, Three-State
CD54HC251F	ROCHESTER	获取价格	Multiplexer, HC/UH Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, CMOS
CD54HC251F/3A	RENESAS	获取价格	IC HC/UH SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, CDIP16, Multiplexer/D
CD54HC251F3A	TI	获取价格	High-Speed CMOS Logic 8-Input Multiplexer, Three-State
CD54HC251H	RENESAS	获取价格	CD54HC251H
CD54HC251H/3	RENESAS	获取价格	HC/UH SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, UUC16
CD54HC251M	ETC	获取价格	Logic IC
CD54HC253E	ETC	获取价格	Logic IC

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