N74F381N

更新时间： 2024-02-14 10:20:33

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
7页	84K
描述
Arithmetic Logic Unit

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N74F381N 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	DIP, DIP20,.3	Reach Compliance Code：	unknown
风险等级：	5.92	JESD-30 代码：	R-PDIP-T20
JESD-609代码：	e0	逻辑集成电路类型：	ARITHMETIC LOGIC UNIT
端子数量：	20	最高工作温度：	70 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装等效代码：	DIP20,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
电源：	5 V	子类别：	Arithmetic Circuits
标称供电电压 (Vsup)：	5 V	表面贴装：	NO
技术：	TTL	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
Base Number Matches：	1

N74F381N 数据手册

Philips Semiconductors

Product specification

Arithmetic Logic Unit

74F381

FEATURES

PIN CONFIGURATION

• Low-input loading minimizes drive requirements

• Performs six arithmetic and logic functions

• Selectable Low (clear) and High (preset) functions

• Carry Generate and Propagate outputs for use with Carry

look-ahead generator

DESCRIPTION

The 74F381 performs three arithmetic and three logic operations on

two 4-bit words, A and B. Three additional Select (S0–S2) input

codes force the Function outputs Low or High. Carry Propagate (P)

and Generate (G) ouputs are provided for use with the 74F182

Carry Look Ahead Generator for high-speed expansion to longer

word lengths. For ripple expansion, refer to the 74F382 ALU data

sheet.

GND 10

SF00921

Signals applied to the Select inputs (S0–S2) determine the mode of

operation, as indicated in the Function Select Table. An extensive

listing of input and output function levels is shown in the Function

Table. The circuit performs the arithmetic functions for either

active-HIgh or active-Low operands, with output levels in the same

convention. In the subtract operating modes, it is necessary to force

a Carry (High for active-HIgh operands, Low for active-Low

operands) into the Cn input of the least significant package. The

Carry Generate (G) and Carry Propagate (P) outputs supply input

signals to the 74F182 Carry look-ahead generator for expansion to

longer word length, as shown in Figure 1. Note that a 74F382 ALU is

used for the most significant package. Typical delays for Figure 1

are given in Table 1.

TYPICAL

PROPAGATION

DELAY

TYPICAL SUPPLY

CURRENT (TOTAL)

TYPE

74F381

6.5ns

59mA

ORDERING INFORMATION

COMMERCIAL RANGE

= 5V ±10%, T = 0°C to +70°C

DESCRIPTION

amb

20-pin plastic DIP

20-pin plastic SO

N74F381N

N74F381D

INPUT AND OUTPUT LOADING AND FAN OUT TABLE

LOAD VALUE

74F (U.L.)

HIGH/LOW

PINS

DESCRIPTION

HIGH/LOW

20µA/2.4mA

20µA/0.6mA

20µA/2.4mA

1.0mA/20mA

A0 – A3

B0 – B3

S0 – S2

A operand inputs

Function select inputs

Carry input

1.0/4.0

1.0/1.0

1.0/4.0

50/33

Carry Propagate ouptut (active-Low)

Carry Generate ouptut (active-Low)

Outputs

50/33

F0–F3

50/33

NOTE:

One (1.0) FAST unit load is defined as 20µA in the High state and 0.6mA in the Low state.

1989 Mar 01

853–0418 95907

12 3 4 5 6 7

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与N74F381N相关器件

型号	品牌	描述	获取价格	数据表
N74F381N-B	ETC	Fixed Point ALU	获取价格
N74F382D	NXP	Arithmetic Logic Unit	获取价格
N74F382DB	ETC	Fixed Point ALU	获取价格
N74F382D-T	ETC	Fixed Point ALU	获取价格
N74F382N	NXP	Arithmetic Logic Unit	获取价格
N74F382N-B	ETC	Fixed Point ALU	获取价格

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