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SN74ALVCH162831 Datasheet(数据表) 2 Page - Texas Instruments

部件型号  SN74ALVCH162831
说明  1-BIT TO 4-BIT ADDRESS REGISTER/DRIVER WITH 3-STATE OUTPUTS
下载  9 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
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 2 page
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SN74ALVCH162831
1-BIT TO 4-BIT ADDRESS REGISTER/DRIVER
WITH 3-STATE OUTPUTS
SCES084F – AUGUST 1996 – REVISED JUNE 1999
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
SEL and OE do not affect the internal operation of the flip-flops. Old data can be retained or new data can be
entered while the outputs are in the high-impedance state.
The outputs, which are designed to sink up to 12 mA, include equivalent 26-
Ω resistors to reduce overshoot
and undershoot.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The SN74ALVCH162831 is characterized for operation from –40
°C to 85°C.
FUNCTION TABLE
INPUTS
OUTPUT
OE
SEL
CLK
A
Y
H
X
X
X
Z
L
HX
L
L
L
HX
H
H
L
L
LL
L
L
H
H
logic diagram (positive logic)
20
21
19
8
CLK
D
Q
22
To Eight Other Channels
5
4
2
1
OE1
OE2
CLK
A1
SEL
1Y1
2Y1
3Y1
4Y1




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