Datasheet > M74HC182

M74HC182

更新时间： 2024-09-12 22:57:55

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
12页	262K
描述
FUNCTION LOOK AHEAD CARRY GENERATOR

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M74HC182 数据手册

M54HC182

M74HC182

FUNCTION LOOK AHEAD CARRY GENERATOR

HIGH SPEED

_PD= 14 ns (TYP.) at V_CC= 5 V

LOW POWER DISSIPATION

I_CC= 4 µA (MAX.) at T_A= 25 °C

HIGH NOISE IMMUNITY

V_NIH= V_NIL= 28 % V_CC(MIN.)

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

SYMMETRICAL OUTPUT IMPEDANCE

IOH = I_OL= 4 mA (MIN.)

BALANCED PROPAGATION DELAYS

t_PLH= t_PHL

WIDE OPERATING VOLTAGE RANGE

V_CC(OPR) = 2 V to 6 V

PIN AND FUNCTION COMPATIBLE

WITH 54/74LS182

B1R

(Plastic Package)

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

ORDER CODES :

M54HC182F1R

M74HC182B1R

M74HC182M1R

M74HC182C1R

DESCRIPTION

The M54/74HC182 is a high speed CMOS FUNC-

TION LOOK AHEAD CARRY GENERATOR

fabricated in silicon gate C²MOS technology. It has

the same high speed performance of LSTTL com-

bined with true CMOS low power consumption.

These circuit are capable of anticipating a carry

across four binary adders or group of adders. They

are cascadable to perform full look-ahead across n-

PIN CONNECTIONS (top view)

bit

adders.

Carry,

generate-carry,

and

propagate-carry functions are provided as shown in

the pin connection table. When used in conjunction

with the HC181 arithmetic logic unit, these gener-

ators provide high-speed carry look-ahead

capability for any word length. Each HC182 gener-

ates the look-ahead (anticipated carry) across a

groupoffour ALU’s and, in addition, other carry look-

ahead circuits may be employed to anticipate carry

across sections of four look-ahead packages up to

n-bits. The method of cascading circuits to perform

multi-level look-ahead is illustrated under typical ap-

plication data.

Carry input and output of the ALUs are in their true

form, and the carry propagate (P) and carry gener-

ate (G) are in negated form ; therefore, the carry

functions (inputs, outputs, generate, and propagate)

of the look-ahead generators are implemented in

the compatible forms for direct connection to the

ALU. Reinterpretation of carry functions as ex-

plained onthe HC181 data sheet are alsoapplicable

to and compatible with the look-ahead generator. All

inputs are equipped with protection circuits against

static discharge and transient excess voltage.

NC =

No Internal

Connection

March 1993

1/12

12 3 4 5 6 7...12

中文翻译

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与M74HC182相关器件

型号	品牌	获取价格	描述	数据表
M74HC182B1R	STMICROELECTRONICS	获取价格	FUNCTION LOOK AHEAD CARRY GENERATOR
M74HC182C1R	STMICROELECTRONICS	获取价格	FUNCTION LOOK AHEAD CARRY GENERATOR
M74HC182M1R	STMICROELECTRONICS	获取价格	FUNCTION LOOK AHEAD CARRY GENERATOR
M74HC190	STMICROELECTRONICS	获取价格	4 BIT SYNCHRONOUS UP/DOWN COUNTERS
M74HC190_01	STMICROELECTRONICS	获取价格	4 BIT SYNCHRONOUS UP/DOWN COUNTERS
M74HC190B1N	STMICROELECTRONICS	获取价格	HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL DECADE COUNTER, PDIP16, PLAS
M74HC190B1R	STMICROELECTRONICS	获取价格	4 BIT SYNCHRONOUS UP/DOWN COUNTERS
M74HC190C1	STMICROELECTRONICS	获取价格	暂无描述
M74HC190C1R	STMICROELECTRONICS	获取价格	4 BIT SYNCHRONOUS UP/DOWN COUNTERS
M74HC190DP	MITSUBISHI	获取价格	Decade Counter, Asynchronous, Bidirectional, CMOS, PDSO16

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