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PDF U74AHC574 Data sheet ( Hoja de datos )
| Número de pieza | U74AHC574 | |
| Descripción | OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS | |
| Fabricantes | Unisonic Technologies | |
| Logotipo |  |
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UNISONIC TECHNOLOGIES CO., LTD
U74AHC574
OCTAL EDGE-TRIGGERED
D-TYPE FLIP-FLOPS WITH
3-STATE OUTPUTS
DESCRIPTION
The U74AHC574 is a octal edge-triggered D-type flip-flops
with 3-state outputs, and it has 8 channels.
When the OE input is low, on the positive transition of the
clock (CLK) input, the Q outputs are set to the logic levels of the
data (D) inputs.
When the OE input is high, the outputs are in the
high-impedance.
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
* Max tpd of 13.2 ns at at VCC=3.3V, CL=15pF
* Max ICC of 4uA
* Typical VOL< 0.36V at VCC=4.5V, IO=8mA, TA=25°C
* Typical VOH> 3.94V at VCC=4.5V, IO =-8mA, TA=25°C
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74AHC574L-P20-R
U74AHC574G-P20-R
U74AHC574L-P20-T
U74AHC574G-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 7
QW-R502-796.A
1 page  
U74AHC574
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
1kΩ
1kΩ
VΔ
0.3V
0.5V
Timing
Input
VM
tSU tH
Data
Input
VM
SETUP AND HOLD TIMES
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
VM
VIN
0V
5 of 7
QW-R502-796.A
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet U74AHC574.PDF ] | |
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