The MC74HC377A is identical in pinout to the LS273. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. This device consists of eight D flip-flops with common Clock and Enable (E) inputs. Each flip-flop is loaded with a low-to-high transition of the Clock input. Enable (E) is active low.

• Output Drive Capability: 10 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• Chip Complexity: 264 FETs or 66 Equivalent Gates