These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The eight flip-flops of the ’HCT374 devices are edge-triggered D-type flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels that were set up at the data (D) inputs.

An output-enable (OE)\ input places the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.

(OE)\ does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

• Operating Voltage Range of 4.5 V to 5.5 V
• High-Current 3-State True Outputs Can Drive Up To 15 LSTTL Loads
• Low Power Consumption, 80-µA Max ICC
• Typical tpd = 22 ns
• ±6-mA Output Drive at 5 V
• Low Input Current of 1 µA Max
• Inputs Are TTL-Voltage Compatible
• Eight D-Type Flip-Flops in a Single Package
• Full Parallel Access for Loading

• ADCV08832 - 具有采样/保持功能的低电压、8 位串行 I/O CMOS A/D 转换器
• CSD18532KCS - 60V N 通道 NexFET? 功率 MOSFET
• UCC3803 - 低功耗 BiCMOS 电流模式 PWM
• TPS62676 - 500mA、6MHz 高效降压转换器
• SN75462 - 双路高电压大电流外设驱动器
• SN74AUP1G80 - 低功耗单路上升沿 D 类触发器
• TPS2590 - 具有双故障阈值和可选故障响应的 20V、5.5A、30mΩ 电子熔丝
• CD54AC157 - 四路同向 2 输入多路复用器
• THS1206M - 12 位 6MSPS ADC，具有四通道 （配置），DSP/uP IF，集成 16x FIFO、信道自动扫描功能和低功耗模式
• SN74ABT574A - 具有三态输出的八路边沿 D 类触发器