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Hitachi Power Semiconductor Device Electronic Components Datasheet

HD74ALVCH16825 Datasheet

18-bit Buffers / Drivers with 3-state Outputs

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HD74ALVCH16825
18-bit Buffers / Drivers with 3-state Outputs
ADE-205-172A (Z)
2nd. Edition
December 1999
Description
The HD74ALVCH16825 improves the performance and density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and transmitters. The device can be used as two 9-bit buffers or one 18-
bit buffer. It provides true data. The 3-state control gate is a 2-input AND gate with active low inputs so
that if either output enable (OE1 or OE2) input is high, all nine affected outputs are in the high impedance
state. Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
Features
VCC = 2.3 V to 3.6 V
Typical VOL ground bounce < 0.8 V (@VCC = 3.3 V, Ta = 25°C)
Typical VOH undershoot > 2.0 V (@VCC = 3.3 V, Ta = 25°C)
High output current ±24 mA (@VCC = 3.0 V)
Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
Function Table
Inputs
OE1
L
L
H
X
H : High level
L : Low level
X : Immaterial
Z : High impedance
OE2
L
L
X
H
A
L
H
X
X
Output Y
L
H
Z
Z


Hitachi Power Semiconductor Device Electronic Components Datasheet

HD74ALVCH16825 Datasheet

18-bit Buffers / Drivers with 3-state Outputs

No Preview Available !

HD74ALVCH16825
Pin Arrangement
1OE1 1
1Y1 2
1Y2 3
GND 4
1Y3 5
1Y4 6
VCC 7
1Y5 8
1Y6 9
1Y7 10
GND 11
1Y8 12
1Y9 13
GND 14
GND 15
2Y1 16
2Y2 17
GND 18
2Y3 19
2Y4 20
2Y5 21
VCC 22
2Y6 23
2Y7 24
GND 25
2Y8 26
2Y9 27
2OE1 28
(Top view)
56 1OE2
55 1A1
54 1A2
53 GND
52 1A3
51 1A4
50 VCC
49 1A5
48 1A6
47 1A7
46 GND
45 1A8
44 1A9
43 GND
42 GND
41 2A1
40 2A2
39 GND
38 2A3
37 2A4
36 2A5
35 VCC
34 2A6
33 2A7
32 GND
31 2A8
30 2A9
29 2OE2
2


Part Number HD74ALVCH16825
Description 18-bit Buffers / Drivers with 3-state Outputs
Maker Hitachi Semiconductor
Total Page 9 Pages
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