74173

• Logic Family: TTL (74xx series)
• Function: 4-bit D-type register with 3-state outputs
• Package: 16-pin DIP
• Number of Bits: 4
• Clock Input: Common clock (edge-triggered)
• Data Inputs: 4 (D0–D3)
• Outputs: 4 three-state outputs (Q0–Q3)
• Output Enable: 2 enable inputs (active LOW, typical)
• Clear Input: Master reset/clear (active LOW)
• Supply Voltage (Vcc): 4.75 V – 5.25 V (nominal 5 V)
• Absolute Max Vcc: ~7 V
• Input Voltage Range: –0.5 V to Vcc
• Logic HIGH (VIH): ≥ 2.0 V
• Logic LOW (VIL): ≤ 0.8 V
• Output HIGH (VOH): ≥ 2.4 V
• Output LOW (VOL): ≤ 0.4 V
• Propagation Delay: ~20–40 ns typical
• Power Dissipation: ~40–60 mW typical
• Operating Temperature: 0 °C to 70 °C

• Stores 4 bits of data
• 3-state outputs for bus systems
• Synchronous clocked operation
• Common clear input
• TTL compatible

Typical Applications

• Data registers
• Bus-oriented systems
• Microprocessor interfacing
• Temporary data storage
• Digital systems and control logic