DataSheet.jp

HC257 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 HC257
部品説明 Quad. 2-to-1-line Data Selectors/Multiplexers(with noninverted 3-state outputs)
メーカ Hitachi Semiconductor
ロゴ Hitachi Semiconductor ロゴ 



Total 9 pages
		

No Preview Available !

HC257 Datasheet, HC257 PDF,ピン配置, 機能
HD74HC257
Quad. 2-to-1-line Data Selectors/Multiplexers
(with noninverted 3-state outputs)
Description
The large output drive capability coupled with the 3-state feature make this device ideal for interfacing with
bus lines in a bus organized system. When the output control input line is taken high, the outputs of all four
multiplexers are sent into a high impedance state. When the output control line is low, the select input
chooses whether the A or B input is used.
Features
High Speed Operation: tpd (Data to Y) = 10.5 ns typ (CL = 50 pF)
High Output Current: Fanout of 15 LSTTL Loads
Wide Operating Voltage: VCC = 2 to 6 V
Low Input Current: 1 µA max
Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)
Function Table
Inputs
Output Control Select
A
LL
L
LL
H
LH
X
LH
X
HX
X
Notes H: high level, L: low level, X: irrelevant
B
X
X
L
H
X
Outputs
Y
L
H
L
H
High impedance

1 Page





ページ 合計 : 9 ページ
PDF
ダウンロード
[ HC257.PDF ]

共有リンク

Link :

おすすめデータシート

部品番号部品説明メーカ
HC2500

Multi Purpose Low Distortion 7-Ampere Operational Amplifier

Harris
Harris
HC2500A03

Hybrid Coupler

Yantel
Yantel
HC2500E03

Hybrid Coupler

Yantel
Yantel
HC2500P03

Hybrid Coupler

Yantel
Yantel

www.DataSheet.jp    |   2019   |  メール    |   最新    |   Sitemap