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PDF HD74ALVCH162244 Data sheet ( Hoja de datos )
| Número de pieza | HD74ALVCH162244 | |
| Descripción | 16-bit Buffers / Drivers with 3-state Outputs | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74ALVCH162244
16-bit Buffers / Drivers with 3-state Outputs
ADE-205-173A (Z)
Preliminary
2nd. Edition
January 1998
Description
The HD74ALVCH162244 is designed specifically to improve both the performance and density of 3-state
memory address drivers, clock drivers, and bus oriented receivers and transmitters. The device can be used
as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. It provides true outputs and symmetrical
active-low output-enable (OE) inputs.
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.
All outputs, which are designed to sink up to 12 mA, include 26 Ω resistors to reduce overshoot and
undershoot.
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 ±12 mA (@VCC = 3.0 V)
• Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
• All outputs have equivalent 26 Ω series resistors, so no external resistors are required.
1 page  
Logic Diagram
1OE 1
1A1 47
46
1A2
1A3 44
43
1A4
3OE 25
3A1 36
35
3A2
3A3 33
32
3A4
HD74ALVCH162244
2 1Y1
3
1Y2
5 1Y3
6
1Y4
2OE 48
2A1 41
40
2A2
2A3 38
37
2A4
13 3Y1
14
3Y2
16 3Y3
17
3Y4
4OE 24
4A1 30
29
4A2
4A3 27
26
4A4
8 2Y1
9
2Y2
11 2Y3
12
2Y4
19 4Y1
20
4Y2
22 4Y3
23
4Y4
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet HD74ALVCH162244.PDF ] | |
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