Octal D-Type Flip-Flop Integrated Circuit Chip Positive Edge-Trigger 3-State SN74HC574PWR
electronics ic chip
,integrated circuit components
FEATURES
• 3-state non-inverting outputs for bus oriented applications
• 8-bit positive edge-triggered register
• Common 3-state output enable input
• Independent register and 3-state buffer operation
• Output capability: bus driver
• ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT574 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 74HC/HCT574 are octal D-type flip-flops featuring separate D-type inputs for each flip-flop and non-inverting 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 time requirements on the LOW-to-HIGH CP transition.
When OE is LOW, the contents of the 8 flip-flops 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.
PIN DESCRIPTION
| PIN NO. | SYMBOL | NAME AND FUNCTION |
|
1 2, 3, 4, 5, 6, 7, 8, 9 10 11 19, 18, 17, 16, 15, 14, 13, 12 20 |
OE D0 to D7 GND CP Q0 to Q7 VCC |
3-state output enable input (active LOW) data inputs ground (0 V) clock input (LOW-to-HIGH, edge-triggered) 3-state flip-flop outputs positive supply voltage |
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