具有 TTL 兼容型 CMOS 输入和三态输出的 8 通道、4.5V 至 5.5V 反相器
| Technology Family | HCT |
| Supply voltage (Min) (V) | 4.5 |
| Supply voltage (Max) (V) | 5.5 |
| Number of channels (#) | 8 |
| IOL (Max) (mA) | 6 |
| IOH (Max) (mA) | -6 |
| ICC (Max) (uA) | 80 |
| Input type | TTL-Compatible CMOS |
| Output type | 3-State |
| Features | Balanced outputs, Very high speed (tpd 5-10ns), Input clamp diode |
| Rating | Catalog |
- Operating Voltage Range of 4.5 V to 5.5 V
- Low Power Consumption, 80-μA Max ICC
- Typical tpd = 12 ns
- ±6-mA Output Drive at 5 V
- Low Input Current of 1 μA Max
- Inputs Are TTL-Voltage Compatible
- High-Current 3-State Outputs Interface Directly With System Bus or Can Drive Up To 15 LSTTL Loads
- Data Flow-Through Pinout (All Inputs on Opposite Side From Outputs)
These octal buffers and line drivers are designed to have the performance of the ?HCT240 devices and a pinout with inputs and outputs on opposite sides of the package. This arrangement greatly facilitates printed circuit board layout.
The 3-state control gate is a 2-input NOR. If either output-enable (OE1\ or OE2\) input is high, all eight outputs are in the high-impedance state. The ?HCT540 devices provide inverted data at the outputs.
To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
