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PDF U74AC244 Data sheet ( Hoja de datos )
| Número de pieza | U74AC244 | |
| Descripción | OCTAL BUFFERS/DRIVERS | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de U74AC244 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
U74AC244
OCTAL BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
DESCRIPTION
The U74AC244 is a octal buffers/drivers with 3-state outputs. It is
organized as two 4-bit buffers/drivers with separate output-enable
( OE ) inputs. When OE is high, the Y outputs are in a
high-impedance state, and the outputs neither load nor drive the bus
lines. When OE is low, the device passes noninverted data from
the A inputs to the Y outputs.
The U74AC244 is designed to improve the performance and
density of 3-state memory address drivers, clock drivers, and
bus-oriented receivers and transmitters.
To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pull-up resistor; the
minimum value of the resistor is determined by the current-sinking
capability of the driver.
FEATURES
* Wide supply voltage range from 2V to 6V
* Max tpd of 7 ns from A to Y at 5V
* Low power consumption, ICC = 4 μA (Max.) at 5.5V
* ±24 mA output driver at 5.5V
www.DataSheet.net/
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74AC244L-P20-R
U74AC244G- P20-R
U74AC244L- P20-T
U74AC244G- P20-T
Package
TSSOP-20
TSSOP-20
CMOS IC
TSSOP-20
Packing
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
1 of 6
QW-R502-784.A
Datasheet pdf - http://www.DataSheet4U.co.kr/
1 page  
U74AC244
TEST CIRCUIT AND WAVEFORMS
CMOS IC
VCC
3.3V±0.3V
5V±0.5V
Inputs
VIN tr, tf
VCC ≤2.5ns
VCC ≤2.5ns
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
VM
VCC/2
VCC/2
S1
OPEN
VLOAD
Open
VLOAD
2*VCC
2*VCC
CL
50pF
50pF
RL
500Ω
500Ω
VΔ
3.3V±0.3V
5V±0.5V
Input
Output
Output
VM
t PLH
tPHL
www.DataSheet.net/
VM
VM
VM
tPHL
t PLH
V IN
0V
V OH
VM
V OL
V OH
VM
V OL
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R502-784.A
Datasheet pdf - http://www.DataSheet4U.co.kr/
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet U74AC244.PDF ] | |
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