HD74HC259

更新时间： 2024-11-28 22:55:07

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HD74HC259 数据手册

HD74HC259

8-bit Addressable Latch

Description

The HD74HC259 has a single data input (D), 8 latch outputs (Q₀-Q₇), 3 address inputs (A, B, and C), a

common enable input (E), and a common clear input. To operate this device as an addressable latch, data is

held on the D input, and the address of the latch into which the data is to be entered is held on the A, B and

C inputs. When enable is taken low the data flows through to the addressed output. The data is stored

when enable transitions from low to high. All unaddressed latches will remain unaffected. With enable in

the high state the device is deselected, and all latches remain in their previous state, unaffected by changes

on the data or address inputs. To eliminate the possibility of entering erroneous data into the latches, the

enable should be held high (inactive) while the address lines are changing.

If enable is held high and clear is taken low all eight latches are cleared to a low state. If enable is low all

latches except the addressed latch will be cleared. The addressed latch will instead follow the D input,

effectively implementing a 3-to-8 line decoder.

Features

•

High Speed Operation: t_pd(Data to Output) = 16 ns typ (C_L= 50 pF)

High Output Current: Fanout of 10 LSTTL Loads

Wide Operating Voltage: V_CC= 2 to 6 V

Low Input Current: 1 µA max

Low Quiescent Supply Current: I_CC(static) = 4 µA max (Ta = 25°C)

Function Table

Inputs

Clear

Output of Addressed Latch Each Other Output

Function

Qio

Addressable latch

Memory

Qio

8-line demultiplexer

Clear

12 3 4 5 6 7 8

中文翻译

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型号	品牌	获取价格	描述	数据表
HD74HC259FP	RENESAS	获取价格	HC/UH SERIES, LOW LEVEL TRIGGERED D LATCH, TRUE OUTPUT, PDSO16, FP-16DA
HD74HC259FP-E	RENESAS	获取价格	HC/UH SERIES, LOW LEVEL TRIGGERED D LATCH, TRUE OUTPUT, PDSO16, FP-16DA
HD74HC259FPEL	RENESAS	获取价格	8-bit Addressable Latch
HD74HC259FP-EL	HITACHI	获取价格	D Latch, HC/UH Series, 1-Func, Low Level Triggered, 1-Bit, True Output, CMOS, PDSO16, FP-1
HD74HC259FPEL-E	RENESAS	获取价格	IC,LATCH,SINGLE,8-BIT,HC-CMOS,SOP,16PIN,PLASTIC
HD74HC259P	RENESAS	获取价格	8-bit Addressable Latch
HD74HC259RP	RENESAS	获取价格	D LATCH, PDSO16, FP-16DN
HD74HC259RPEL	RENESAS	获取价格	8-bit Addressable Latch
HD74HC259RP-EL	HITACHI	获取价格	D Latch, HC/UH Series, 1-Func, Low Level Triggered, 1-Bit, True Output, CMOS, PDSO16, FP-1
HD74HC266P	HITACHI	获取价格	XNOR Gate, HC/UH Series, 4-Func, 2-Input, CMOS, PDIP14, DP-14