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參數(shù)資料
| 型號： | HC253 |
| 廠商： | System Logic Semiconductor Co., Ltd. |
| 英文描述： | PWM Controller; Mounting Type:Through Hole; Package/Case:18-DIP |
| 中文描述： | 雙路4輸入數(shù)據(jù)選擇器/復(fù)用器具有三態(tài)Otputs |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 49K |
| 代理商： | HC253 |
SL74HC253
S ystem Logic
Semiconductor
SLS
Dual 4-Input Data Selector/Multiplexer
with 3-State Otputs
High-Performance Silicon-Gate CMOS
The SL74HC253 is identical in pinout to the LS/ALS253. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
The Address Inputs select one of four Data Inputs from each
multiplexer. Each multiplexer has an active-low Output Enable control
and a three-state noninverting output.
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0
μ
A
High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
SL74HC253N Plastic
SL74HC253D SOIC
T
A
= -55
°
to 125
°
C for all packages
FUNCTION TABLE
Inputs
Output
A1
A0
OE
Y
X
X
H
Z
L
L
L
D0
L
H
L
D1
H
L
L
D2
H
H
L
D3
D0,D1...D3=the level of the respective
Data Input
Z = high impedance
X = don’t care
LOGIC DIAGRAM
PIN 16 =V
CC
PIN 8 = GND
PIN ASSIGNMENT
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