具有三态输出的汽车类高速 CMOS 逻辑八路上升沿 D 类触发器
| Number of channels (#) | 8 |
| Technology Family | HCT |
| Supply voltage (Min) (V) | 4.5 |
| Supply voltage (Max) (V) | 5.5 |
| Input type | TTL-Compatible CMOS |
| Output type | 3-State |
| Clock Frequency (Max) (MHz) | 25 |
| IOL (Max) (mA) | 6 |
| IOH (Max) (mA) | -6 |
| ICC (Max) (uA) | 80 |
| Features | Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode |
- Qualified for Automotive Applications
- Buffered Inputs
- Common 3-State Output-Enable Control
- 3-State Outputs
- Bus-Line Driving Capability
- Typical Propagation Delay (Clock to Q):
15 ns at VCC = 5 V, CL = 15 pF, TA = 25°C - Fanout (Over Temperature Range)
- Standard Outputs . . . 10 LSTTL Loads
- Bus Driver Outputs . . . 15 LSTTL Loads
- Balanced Propagation Delay and Transition Times
- Significant Power Reduction Compared to LSTTL Logic ICs
- VCC Voltage = 4.5 V to 5.5 V
- Direct LSTTL Input Logic Compatibility, VIL = 0.8 V (Max), VIH = 2 V (Min)
- CMOS Input Compatibility, Il ≤ 1 μA at VOL, VOH
The CD74HCT574 is an octal D-type flip-flop with 3-state outputs and the capability to drive 15 LSTTL loads. The eight edge-triggered flip-flops enter data into their registers on the low-to-high transition of the clock (CP). The output enable (OE) controls the 3-state outputs and is independent of the register operation. When OE is high, the outputs are in the high-impedance state.
