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PDF HD74lVC16244A Data sheet ( Hoja de datos )
| Número de pieza | HD74lVC16244A | |
| Descripción | 16-bit Buffers / Line Drivers with 3-state Outputs | |
| Fabricantes | Hitachi Semiconductor | |
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HD74LVC16244A
16-bit Buffers / Line Drivers with 3-state Outputs
ADE-205-119B(Z)
3rd Edition
Decemver 1996
Description
The HD74LVC16244A has sixteen line drivers with three state outputs in a 48 pin package. This device is
a non inverting buffer and has two active low enables (1G to 4G). Each enable independently controls four
buffers. Low voltage and high speed operation is suitable at the battery drive product (note type personal
computer) and low power consumption extends the life of a battery for long time operation.
Features
• VCC = 2.0 V to 5.5 V
• All inputs VIH (Max.) = 5.5 V (@VCC = 0 V to 5.5 V)
• All outputs VOUT (Max.) = 5.5 V (@VCC = 0 V or output off state)
• 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 to 5.5 V)
Function Table
G
H
L
L
H: High level
L: Low level
X: Immaterial
Z: High impedance
Inputs
A
X
H
L
Output Y
Z
H
L
1 page  
HD74LVC16244A
Switching Characteristics
Ta = –40 to 85°C
Item
Propagation delay time
Symbol
t PLH
t PHL
VCC (V)
2.7
3.3±0.3
5.0±0.5
Min
—
1.5
—
Typ Max Unit
— 5.8 ns
— 5.2 ns
— 4.0 ns
Output enable time
tZH 2.7 — — 8.2 ns
tZL 3.3±0.3 1.5 — 7.5 ns
5.0±0.5 — — 5.5 ns
Output disable time
t HZ
t LZ
Between output pins skew *1 tOSLH
t OSHL
2.7 —
3.3±0.3 1.5
5.0±0.5 —
2.7 —
3.3±0.3 —
5.0±0.5 —
—
—
—
—
—
—
7.7 ns
7.0 ns
6.0 ns
— ns
1.0 ns
1.0 ns
Input capacitance
CIN 2.7 — 3.0
Output capacitance
CO 2.7 — 15.0
Note: 1. This parameter is characterized but not tested.
tosLH = | tPLHm – tPLHn |, tosHL = | tPHLm – tPHLn |
—
—
pF
pF
From (Input) To (Output)
AY
GY
GY
Test Circuit
VCC
VCC
Input
Pulse generator
Zout = 50 Ω
1G to 4G
Output
1Y1 to 4Y4
1A1 to 4A4
CL =
50 pF
500 Ω S1
450 Ω
50 Ω Scope
OPEN
*1 See under table
GND
Note:
1. CL includes probe and jig capacitance.
Symbol
tPLH / t PHL
tZH/ t HZ
tZL / t LZ
S1
Vcc=2.7V,
3.3±0.3V
Vcc=5.0±0.5V
OPEN OPEN
GND
GND
6 V 2×Vcc
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet HD74lVC16244A.PDF ] | |
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