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PDF U74AHC640 Data sheet ( Hoja de datos )
| Número de pieza | U74AHC640 | |
| Descripción | OCTAL BUS TRANSCEIVERS | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
U74HC640
OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
DESCRIPTION
The U74AHC640 is a octal bus transceivers with 3-state
outputs. It is designed for asynchronous two-way communication
between data buses. Depending on the direction-control (DIR) input,
data are transmitted from the A bus to the B bus or from the B bus to
the A bus.
When OE is high, the buses are effectively isolated. When
OE is low, the buses are enable.
FEATURES
* Wide Supply Voltage Range from 2V to 6V
* Typical tPD of 8ns at 6V, CL=50pF
* Low Power Consumption, ICC = 8μA (Max) at 5.5V
* ±7.8mA Output Driver at 6V
CMOS IC
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74AHC640L-R20-R
U74AHC640G-R20-R
U74AHC640L-R20-T
U74AHC640G-R20-T
Package
SSOP-20
SSOP-20
Packing
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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QW-R126-008.A
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U74HC640
TEST CIRCUIT AND WAVEFORMS
CMOS IC
VCC
3.3V±0.3V
5V±0.5V
Input
VIN tR, tF
VCC ≤3ns
VCC ≤3ns
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
Open
VLOAD
GND
VM
VCC/2
VCC/2
VLOAD
VCC
VCC
CL
50pF
150pF
50pF
150pF
RL
1kΩ
1kΩ
Input
90%
90%
VCC
10%
tR
10%
0V
tF
Voltage Waveforms Input Rise and Fall Times
VΔ
0.3V
0.5V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 7
QW-R126-008.A
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| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet U74AHC640.PDF ] | |
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