SN74HCT377数据手册集成电路（IC）的触发器规格书PDF

描述 Description

These devices are positive-edge-triggered D-type flip-flops. The ’HCT377 devices are similar to the ’'HCT273 devices, but feature a latched clock-enable (CLKEN)\\ input instead of a common clear.

Information at the data (D) inputs meeting the setup time requirements is transferred to the Q outputs on the positive-going edge of the clock (CLK) pulse if CLKEN\\ is low. Clock triggering occurs at a particular voltage level and is not directly related to the transition time of the positive-going pulse. When CLK is at either the high or low level, the D input has no effect at the output. These devices are designed to prevent false clocking by transitions at CLKEN\\.

特性 Features

• Operating Voltage Range of 4.5 V to 5.5 V
• Outputs Can Drive Up To 10 LSTTL Loads
• Low Power Consumption, 80-&miccro;A Max ICC
• Typical tpd = 12 ns
• ±4-mA Output Drive at 5 V
• Low Input Current of 1 µA Max
• Inputs Are TTL-Voltage Compatible
• Contain Eight Flip-Flops With Single-Rail Outputs
• Clock Enable Latched to Avoid False Clocking
• Applications Include:
• Buffer/Storage Registers
• Shift Registers
• Pattern Generators