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PDF HD74LVC16245A Data sheet ( Hoja de datos )
| Número de pieza | HD74LVC16245A | |
| Descripción | 16-bit Bus Transceivers with 3-state Outputs | |
| Fabricantes | Hitachi Semiconductor | |
| Logotipo |  |
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HD74LVC16245A
16-bit Bus Transceivers with 3-state Outputs
ADE-205-120B(Z)
3rd Edition
December 1996
Description
The HD74LVC16245A has sixteen two direction buffers, for the fittest at two direction bus lines with three
state outputs. A direction control input, DIR. When DIR is high, data flows from the A inputs to the B
outputs. When DIR is high, data flows from the B inputs to the A outputs. When enable inputs (G) is high,
disables both A and B ports by placing then in a high impedance. 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
L
L
H
H: High level
L: Low level
X: Immaterial
Z: High impedance
Inputs
DIR
L
H
X
Operation
B data to A bus
A data to B bus
Z
1 page  
HD74LVC16245A
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
— 4.5 ns
Output enable time
tZH 2.7 — — 8.0 ns
tZL 3.3±0.3 1.5 — 7.2 ns
5.0±0.5 — — 6.0 ns
Output disable time
tHZ 2.7 — — 8.0 ns
tLZ 3.3±0.3 1.5 — 7.2 ns
5.0±0.5 — — 6.0 ns
Between output pins skew *1 tOSLH
t OSHL
2.7 — — — ns
3.3±0.3 — — 1.0 ns
5.0±0.5 — — 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)
A or B
B or A
G B or A
G B or A
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet HD74LVC16245A.PDF ] | |
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