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PDF U74AHC573 Data sheet ( Hoja de datos )

Número de pieza U74AHC573
Descripción OCTAL TRANSPARENT D-TYPE LATCHES
Fabricantes Unisonic Technologies 
Logotipo Unisonic Technologies Logotipo



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No Preview Available ! U74AHC573 Hoja de datos, Descripción, Manual

UNISONIC TECHNOLOGIES CO., LTD
U74AHC573
OCTAL TRANSPARENT
D-TYPE LATCHES WITH
3-STATE OUTPUTS
„ DESCRIPTION
The U74AHC573 is an octal transparent D-type latch with
3-state outputs, and it has 8 channels.
When the OE input is low and the LE input is high, the Q
outputs follow the D inputs. When OE is low and LE is low, the
Q outputs are latched at the logic levels of the D inputs.
When the OE input is high, the outputs are in the
high-impedance. The OE does not affect the internal operations
of the latches. Old data can be retained or new data can be
entered while the outputs are in the high-impedance state.
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
* Operate from 2V to 5.5V
* Inputs Accept Voltages to 5.5V
* Max tPD of 13ns at VCC=3.3V, CL=15pF
* Typ VOL< 0.36V at VCC=4.5V, IOL=8mA, TA=25°C
* Typ VOH> 3.94V at VCC=4.5V, IOH=-8mA, TA=25°C
„ ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74AHC573L-P20-R
U74AHC573G-P20-R
U74AHC573L-P20-T
U74AHC573G-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
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U74AHC573 pdf
U74AHC573
„ 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
VM
VCC/2
VCC/2
S1
Open
VLOAD
GND
VLOAD
VCC
VCC
CL
15pF
50pF
15pF
50pF
RL
1k
1k
Input
tW
VM
Pulse Duration
VM
VIN
0V
VΔ
0.3V
0.5V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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