MM54C374  Product Folder

The MM54C373/MM74C373, MM54C374/MM74C374 are integrated, complementary MOS (CMOS), 8-bit storage elements with TRI-STATE outputs. These outputs have been specially designed to drive high capacitive loads, such as one might find when driving a bus, and to have a fan out of 1 when driving standard TTL. When a high logic level is applied to the OUTPUT DISABLE input, all outputs go to a high impedance state, regardless of what signals are present at the other inputs and the state of the storage elements.

The MM54C373/MM74C373 is an 8-bit latch. When LATCH# ENABLE# is high, the Q outputs will follow the D inputs. When LATCH# ENABLE# goes low, data at the D inputs, which meets the set-up and hold time requirements, will be retained at the outputs until LATCH# ENABLE# returns high again.

The MM54C374/MM74C374 is an 8-bit, D-type, positive-edge triggered flip-flop. Data at the D inputs, meeting the set-up and hold time requirements, is transferred to the Q outputs on positive-going transitions of the CLOCK input.

Both the MM54C373/MM74C373 and the MM54C374/MM74C374 are being assembled in 20-pin dual-in-line packages with 0.300[Foot][Minute][Prime] pin centers.

• Wide supply voltage range: 3V to 15V
• High noise immunity: 0.45 V_CC (typ.)
• Low power consumption
• TTL compatibility: Fan out of 1
  : driving standard TTL
• Bus driving capability
• TRI-STATE outputs
• Eight storage elements in one package
• Single CLOCK/LATCH# ENABLE# and OUTPUT DISABLE control inputs
• 20-pin dual-in-line package with 0.300[Foot][Minute][Prime] centers takes half the board space of a 24-pin package