Datasheet > CD74HC137_02

CD74HC137_02

更新时间： 2024-02-08 15:24:46

品牌	Logo	应用领域
德州仪器 - TI		解复用器锁存器
页数	文件大小	规格书
9页	66K
描述
High Speed CMOS Logic, 3-to-8 Line Decoder Demultiplexer with Address Latches

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数据手册

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CD74HC137_02 数据手册

CD74HC137, CD74HCT137,

CD54/74HC237, CD74HCT237

Data sheet acquired from Harris Semiconductor

SCHS146C

High Speed CMOS Logic, 3-to-8 Line Decoder

Demultiplexer with Address Latches

March 1998 - Revised July 2002

Features

Description

• Select One of Eight Data Outputs

The

CD74HC137,

CD74HCT137,

’HC237,

and

CD74HCT237 are high speed silicon gate CMOS decoders

well suited to memory address decoding or data routing

applications. Both circuits feature low power consumption

usually associated with CMOS circuitry, yet have speeds

comparable to low power Schottky TTL logic.

- Active Low for CD74HC137 and CD74HCT137

- Active High for ’HC237 and CD74HCT237

[ /Title

(CD74

HC137

• l/O Port or Memory Selector

• Two Enable Inputs to Simplify Cascading

Both circuits have three binary select inputs (A0, A1 and A2)

that can be latched by an active High Latch Enable (LE) sig-

nal to isolate the outputs from select-input changes. A “Low”

LE makes the output transparent to the input and the circuit

functions as a one-of-eight decoder. Two Output Enable

CD74

HCT13

CD74

HC237

CD74

HCT23

/Sub-

ject

• Typical Propagation Delay of 13ns at V

= 5V,

15pF, T = 25 C (CD74HC237)

• Fanout (Over Temperature Range)

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

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

inputs (OE and OE ) are provided to simplify cascading

and to facilitate demultiplexing. The demultiplexing function

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

• Balanced Propagation Delay and Transition Times

is accomplished by using the A , A , A inputs to select the

desired output and using one of the other Output Enable

inputs as the data input while holding the other Output

Enable input in its active state. In the CD74HC137 and

CD74HCT137 the selected output is a “Low”; in the ’HC237

and CD74HCT237 the selected output is a “High”.

• Signiﬁcant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

Ordering Information

(High

Speed

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

IL IH

at V

= 5V

TEMP. RANGE

PART NUMBER

CD74HC137E

( C)

PACKAGE

16 Ld PDIP

16 Ld SOIC

16 Ld CERDIP

16 Ld PDIP

16 Ld SOIC

16 Ld SOP

• HCT Types

-55 to 125

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

CD74HCT137E

CD74HCT137M96

CD54HC237F

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

IL IH

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

OL OH

CD54HC237F3A

CD74HC237E

Pinout

CD54HC237

(CERDIP)

CD74HC137, CD74HCT137, CD74HCT237

(PDIP, SOIC)

CD74HC237M

CD74HC237M96

CD74HC237NSR

CD74HC237PWR

CD74HCT237E

NOTES:

CD74HC237

(PDIP, SOIC, SOP, TSSOP)

TOP VIEW

16 Ld TSSOP

16 Ld PDIP

16 V

15 Y

14 Y

13 Y

12 Y

11 Y

10 Y

1. When ordering, use the entire part number. Add the sufﬁx 96 to

obtain the variant in the tape and reel.

2. Wafer and die for this part number is available which meets all

electrical specifications. Please contact your local TI sales office

or customer service for ordering information.

GND

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

12 3 4 5 6 7...9

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与CD74HC137_02相关器件

型号	品牌	获取价格	描述	数据表
CD74HC137_07	TI	获取价格	High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address Latches
CD74HC137_08	TI	获取价格	High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address Latches
CD74HC137_15	TI	获取价格	High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address Latches
CD74HC137E	TI	获取价格	High Speed CMOS Logic, 3-to-8 Line Decoder Demultiplexer with Address Latches
CD74HC137EE4	TI	获取价格	High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address Latches
CD74HC137EN	ETC	获取价格	Logic IC
CD74HC137F	ETC	获取价格	Logic IC
CD74HC137H	ETC	获取价格	3-To-8-Line Demultiplexer
CD74HC137M	ROCHESTER	获取价格	HC/UH SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
CD74HC137M	RENESAS	获取价格	IC,DECODER/DEMUX,3-TO-8-LINE,HC-CMOS,SOP,16PIN,PLASTIC

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