CD74HCT574EE4 Datasheet PDF - TI

●Description

●The ’HC374, ’HCT374, ’HC574, and ’HCT574 are octal D-type flip-flops 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 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. The 374 and 574 are identical in function and differ only in their pinout arrangements.

●Features

●• Buffered Inputs

●• Common Three-State Output Enable Control

●• Three-State Outputs

●• Bus Line Driving Capability

●• Typical Propagation Delay (Clock to Q) = 15ns at VCC= 5V, CL= 15pF, TA= 25oC

●• Fanout (Over Temperature Range)

●\- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

●\- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

●• Wide Operating Temperature Range . . . -55oC to 125oC

●• Balanced Propagation Delay and Transition Times

●• Significant Power Reduction Compared to LSTTL Logic ICs

●• HC Types

●\- 2-V to 6-V Operation

●\- High Noise Immunity: NIL= 30%, NIH= 30% of VCC at VCC= 5V

●• HCT Types

●\- 4.5-V to 5.5-V Operation

●\- Direct LSTTL Input Logic Compatibility, VIL= 0.8V (Max), VIH= 2V (Min)

●\- CMOS Input Compatibility, Il ≤1µA at VOL, VOH