CD74HCT244EE4 Datasheet PDF - TI

●Description

●The ’HC240 and ’HCT240 are inverting three-state buffers having two active-low output enables. The CD74HC241, ’HCT241, ’HC244 and ’HCT244 are non-inverting three state buffers that differ only in that the 241 has one active high and one active-low output enable, and the 244 has two active-low output enables. All three types have identical pinouts.

●Features

●• HC/HCT240 Inverting

●• HC/HCT241 Non-Inverting

●• HC/HCT244 Non-Inverting

●• Typical Propagation Delay = 8ns at VCC = 5V, CL = 15pF, TA = 25oC for HC240

●• Three-State Outputs

●• Buffered Inputs

●• High-Current Bus Driver Outputs

●• 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

●   - 2V to 6V Operation

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

●• HCT Types

●   - 4.5V to 5.5V Operation

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

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