CD74HC646
Features
Description
- Independent Registers for A and B Buses
- Non-Inverting
- Three-State Outputs
- Drives 15 LSTTL Loads
- Typical Propagation Delay = 12ns (A to B, B to A) at VCC = 5V, CL = 15p F, TA = 25o C
- Fanout (Over Temperature Range)
- Standard Outputs
- -
- 10 LSTTL Loads
- Bus Driver Outputs
- - . . . 15 LSTTL Loads
- Wide Operating Temperature Range . . . -55o C to 125o C
- Balanced Propagation Delay and Transition Times
- Significant Power Reduction pared to LSTTL Logic ICs
- HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
The CD74HC646 is an octal bus transceiver/register with three-state non-inverting outputs. This device is a bus transceiver with D-type flip-flops which act as internal storage registers. Data on the A bus or the B bus can be clocked into the registers on the Low-to-High transition of either CAB or CBA clock inputs. Outputs enable (OE) and direction (DIR) inputs...
