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PDF HD74ALVCH16827 Data sheet ( Hoja de datos )
| Número de pieza | HD74ALVCH16827 | |
| Descripción | 20-bit Buffers / Drivers with 3-state Outputs | |
| Fabricantes | Hitachi Semiconductor | |
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HD74ALVCH16827
20-bit Buffers / Drivers with 3-state Outputs
ADE-205-140B (Z)
3rd. Edition
December 1999
Description
The HD74ALVCH16827 is composed of two 10-bit sections with separated output enable signals. For
either 10-bit buffer section, the two output enable (1OE1 and 1OE2 or 2OE1 and 2OE2) inputs must both
be low for the corresponding Y outputs to be active. If either output enable input is high, the outputs of that
10-bit buffer section 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
OE2
LL
LL
HX
XH
H : High level
L : Low level
X : Immaterial
Z : High impedance
A
L
H
X
X
Output Y
L
H
Z
Z
1 page  
HD74ALVCH16827
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 HD74ALVCH16827.PDF ] | |
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