Features: · 3-state non-inverting outputs for bus oriented applications
· 8-bit positive, edge-triggered register
· ESD protection:
HBM EIA/JESD22-A114-A
exceeds 2000 V
MM EIA/JESD22-A115-A
exceeds 200 V
· Independent register and 3-state buffer operation
· Common 3-state output enable input
· Output capability; bus driver
· ICC category: MSI
· For AHC only: operates with CMOS input levels
· For AHCT only: operates with TTL input levels
· Specified from -40 to +85 and +125 °C.Pinout
Specifications
| SYMBOL |
PARAMETER |
CONDITIONS |
MIN |
MAX |
UNIT |
| VCC |
DC supply voltage |
|
|
+7.0 |
V |
| VI |
supply voltage |
|
-0.5 |
+7.0 |
V |
| IIK |
input diode current |
VI < -0.5 V; note 1 |
-0.5 |
-20 |
mA |
| ISK |
switch diode current |
VO < -0.5 V or VO > VCC + 0.5 V; note 1 |
- |
±20 |
mA |
| IS |
switch source or sink current |
-0.5 V < VO < VCC + 0.5 V |
- |
±25 |
mA |
| ICC, IGND |
VCC or GND current |
|
- |
±75 |
mA |
| Tstg |
storage temperature |
|
-65 |
+150 |
°C |
| PD |
power dissipation per package |
for temperature range: -40 to +125 °;Cnote 2 |
- |
500 |
mW |
Notes
1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. For SO-packages: above 70 °C the value of PD derates linearly with 8 mW/K. For TSSOP-packages: above 60 °C the value of PD derates linearly with 5.5 mW/K.DescriptionThe 74AHC574 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The 74AHC574 are octal D-type flip-flops featuring separate D-type inputs for each flip-flop and 3-state outputs for bus oriented applications. A clock (CP) and an output enable (
OE) input are common to all flip-flops. The 8 flip-flops will store the state of their individual D-inputs that meet the set-up and hold times requirements on the LOW-to-HIGH CP transition.
When
OE is LOW the contents of the 8 flip-flops of the 74AHC574 are available at the outputs. When
OE is HIGH, the outputs go to the high-impedance OFF-state. Operation of the
OE input does not affect the state of the flip-flops.
The '574' is functionally identical to the '564', but has non-inverting outputs. The '574' is functionally identical to the '374', but has a different pinning.
74AHC574 Data Sheet
