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PDF HD74ALVCH16825 Data sheet ( Hoja de datos )
| Número de pieza | HD74ALVCH16825 | |
| Descripción | 18-bit Buffers / Drivers with 3-state Outputs | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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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
1 page  
HD74ALVCH16825
Electrical Characteristics (Ta = –40 to 85°C)
Item
Input voltage
Symbol VCC (V) *1
VIH 2.3 to 2.7
2.7 to 3.6
Min
1.7
2.0
Max Unit Test Conditions
—V
—
VIL 2.3 to 2.7 —
2.7 to 3.6 —
0.7
0.8
Output voltage
VOH Min to Max VCC–0.2 —
V IOH = –100 µA
2.3 2.0 —
IOH = –6 mA, VIH = 1.7 V
2.3 1.7 —
IOH = –12 mA, VIH = 1.7 V
2.7 2.2 —
IOH = –12 mA, VIH = 2.0 V
3.0 2.4 —
IOH = –12 mA, VIH = 2.0 V
3.0 2.0 —
IOH = –24 mA, VIH = 2.0 V
VOL Min to Max —
0.2
IOL = 100 µA
2.3 — 0.4
IOL = 6 mA, VIL = 0.7 V
2.3 — 0.7
IOL = 12 mA, VIL = 0.7 V
2.7 — 0.4
IOL = 12 mA, VIL = 0.8 V
3.0 — 0.55
IOL = 24 mA, VIL = 0.8 V
Input current
IIN 3.6
— ±5 µA VIN = VCC or GND
IIN (hold) 2.3
45 —
VIN = 0.7 V
2.3 –45 —
VIN = 1.7 V
3.0 75 —
VIN = 0.8 V
3.0 –75 —
VIN = 2.0 V
3.6 — ±500
VIN = 0 to 3.6 V
Off state output current *2 IOZ
3.6
— ±10 µA VOUT = VCC or GND
Quiescent supply current ICC
3.6
— 40 µA VIN = VCC or GND
∆ICC 3.0 to 3.6 —
750 µA VIN = one input at (VCC–0.6) V,
other inputs at VCC or GND
Notes: 1. For conditions shown as Min or Max, use the appropriate values under recommended operating
conditions.
2. For I/O ports, the parameter IOZ includes the input leakage current.
5
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| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet HD74ALVCH16825.PDF ] | |
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