MC14549B

更新时间： 2024-11-27 04:59:27

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		/
页数	文件大小	规格书
9页	212K
描述
SUCCESSIVE APPROXIMATION REGISTERS

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中文翻译

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数据手册

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MC14549B 数据手册

SEMICONDUCTOR TECHNICAL DATA

The MC14549B and MC14559B successive approximation registers are

8–bit registers providing all the digital control and storage necessary for

successive approximation analog–to–digital conversion systems. These

parts differ in only one control input. The Master Reset (MR) on the

MC14549B is required in the cascaded mode when more than 8 bits are

desired. The Feed Forward (FF) of the MC14559B is used for register

shortening where End–of–Conversion (EOC) is required after less than eight

cycles.

L SUFFIX

CERAMIC

CASE 620

P SUFFIX

PLASTIC

CASE 648

Applications for the MC14549B and MC14559B include analog–to–digital

conversion, with serial and parallel outputs.

•

Totally Synchronous Operation

All Outputs Buffered

Single Supply Operation

Serial Output

DW SUFFIX

SOIC

CASE 751G

Retriggerable

ORDERING INFORMATION

Compatible with a Variety of Digital and Analog Systems such as the

MC1408 8–Bit D/A Converter

All Control Inputs Positive–Edge Triggered

MC14XXXBCP

MC14XXXBCL

MC14XXXBDW

Plastic

Ceramic

SOIC

•

Supply Voltage Range = 3.0 Vdc to 18 Vdc

= – 55° to 125°C for all packages.

Capable of Driving Two Low–Power TTL Loads, One Low–Power

Schottky TTL Load or Two HTL Loads Over the Rated Temperature

Range

•

Chip Complexity: 488 FETs or 122 Equivalent Gates

PIN ASSIGNMENT

MAXIMUM RATINGS* (Voltages referenced to V

)

Rating

DC Supply Voltage

Symbol

Value

Unit

Vdc

mAdc

– 0.5 to + 18

Input Voltage, All Inputs

– 0.5 to V + 0.5

DC Input Current, per Pin

± 10

out

Power Dissipation, per Package†

Operating Temperature Range

Storage Temperature Range

500

EOC

– 55 to + 125

– 65 to + 150

stg

* Maximum Ratings are those values beyond which damage to the device may occur.

†Temperature Derating:

* For MC14549B Pin 10 is MR input.

For MC14559B Pin 10 is FF input.

“P and D/DW” Packages: – 7.0 mW/C From 65 C To 125 C Ceramic

“L” Packages: – 12 mW/ C From 100 C To 125 C

TRUTH TABLES

MC14549B

MC14559B

SC SC( ) MR MR( ) Clock

t–1 t–1

Action

None

SC SC( ) EOC Clock

t–1

Action

None

Reset

Start

Conversion

Start

Conversion

Continue

Conversion

Start

Conversion

Continue

Conversion

Continue

Conversion

Retain

Conversion

Result

Continue

Operation

Start

Conversion

X = Don’t Care t–1 = State at Previous Clock

REV 3

1/94

Motorola, Inc. 1995

MOTOROLA CMOS LOGIC DATA

MC14549B MC14559B

12 3 4 5 6 7...9

中文翻译

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与MC14549B相关器件

型号	品牌	获取价格	描述	数据表
MC14549B_06	ONSEMI	获取价格	Successive Approximation Registers
MC14549BALD	MOTOROLA	获取价格	暂无描述
MC14549BALDS	MOTOROLA	获取价格	SPECIALTY LOGIC CIRCUIT, CDIP16, 620-09
MC14549BCL	MOTOROLA	获取价格	SUCCESSIVE APPROXIMATION REGISTERS
MC14549BCLD	MOTOROLA	获取价格	SPECIALTY LOGIC CIRCUIT, CDIP16, 620-09
MC14549BCLDS	MOTOROLA	获取价格	Logic Circuit, CMOS, CDIP16, 620-09
MC14549BCLS	MOTOROLA	获取价格	暂无描述
MC14549BCP	ONSEMI	获取价格	Successive Approximation Registers
MC14549BCP	MOTOROLA	获取价格	SUCCESSIVE APPROXIMATION REGISTERS
MC14549BCPD	MOTOROLA	获取价格	SPECIALTY LOGIC CIRCUIT, CDIP16, 620-09

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