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PDF U74HC240 Data sheet ( Hoja de datos )
| Número de pieza | U74HC240 | |
| Descripción | OCTAL BUFFERS AND LINE DRIVERS | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de U74HC240 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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UNISONIC TECHNOLOGIES CO., LTD
U74HC240
OCTAL BUFFERS AND LINE
DRIVERS WITH 3-STATE OUTPUTS
CMOS IC
DESCRIPTION
The U74HC240 is a octal buffer and line driver 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 inverted data from
the A inputs to the Y outputs.
The U74HC240 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; and 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 9 ns from A to Y at 6V
* Low power consumption, ICC = 8 μA (Max.) at 6V
* ±6 mA output driver at 5V
* Low Input Current of 1 μA Max
ORDERING INFORMATION
Ordering Number
U74HC240G-P20-R
Package
TSSOP-20
TSSOP-20
Packing
Tape Reel
■ MARKING
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 6
QW-R502-498.B
1 page  
U74HC240
TEST CIRCUIT AND WAVEFORMS
CMOS IC
TEST
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
S1
Open
VLOAD
GND
Inputs
VIN tr, tf
VCC ≤ 6ns
Input
10%
VM
VCC/2
90%
tr
VLOAD
VCC
90%
CL
50 or 150pF
VCC
10%
tf
0V
RL
500Ω
Input
Output
Output
VM
tPLH
10%
90%
VM
tr
tPHL
90%
VM
10%
tf
VM
tPHL
VIN
0V
90%
tPLH
10%
VM
10%
tf
VOH
VOL
90%
VM
VOH
VOL
tr
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5 of 6
QW-R502-498.B
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet U74HC240.PDF ] | |
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