參數(shù)資料
型號(hào): HC257
廠商: 意法半導(dǎo)體
英文描述: T-NPN- SI-AF PO
中文描述: 四2通道多路復(fù)用三態(tài)
文件頁(yè)數(shù): 2/14頁(yè)
文件大?。?/td> 315K
代理商: HC257
74VHC257
2/14
Figure 2: Input Equivalent Circuit
Table 2: Pin Description
Table 3: Truth Table
X : Don’t Care
Z : High Impedance
Figure 3: Logic Diagram
This logic diagram has not be used to estimate propagation delays
PIN N°
SYMBOL
NAME AND FUNCTION
1
SELECT
Common Data Select
Inputs
Data Inputs From Source
A
Data Inputs From Source
B
3 State Multiplexer
Outputs
3 State Output Enable
Inputs (Active LOW)
Ground (0V)
Positive Supply Voltage
2, 5, 11, 14
1A to 4A
3, 6, 10, 13
1B to 4B
4, 7, 9, 12
1Y to 4Y
15
OE
8
GND
V
CC
16
INPUTS
OUTPUT
OE
SELECT
A
B
Y
H
L
L
L
L
X
L
L
H
H
X
L
H
X
X
X
X
X
L
H
Z
L
H
L
H
相關(guān)PDF資料
PDF描述
HC257 NTE IC, TYPE: DUAL CHANNEL CURRENT MODE
HC257 IC-VERT DEFL CKT
HC257 TRANSISTOR,BJT,PNP,25V V(BR)CEO,2A I(C),TO-39
HC257 Peripheral Driver
HC257 Darlington Bipolar Transistor; Transistor Polarity:N Channel; Power Dissipation:0.4W; C-E Breakdown Voltage:40V; DC Current Gain Min (hfe):7000; Collector Current:0.3A; Package/Case:3-TO-92; DC Current Gain Max (hfe):70000
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HC259 制造商:EDSYN 功能描述:
HC259A 制造商:Toshiba America Electronic Components 功能描述:
HC26 制造商:未知廠家 制造商全稱:未知廠家 功能描述:MEDIUM/HIGH VOLTAGE MULTILAYER CERAMIC CAPACITORS
HC2652B 制造商:Square D by Schneider Electric 功能描述:PANELBOARD ENCLOSURE/BOX TYPE 1 52H 26W
HC2652TSHR 制造商:Schneider Electric 功能描述:PNLBD COVER/TRIM ILINE T-1 S 26W52H HR