SN74HCT273DWR

SN74HCT273DWR is an 8-bit D-type register with 3-state outputs from TI’s HCT family. It stores 8 data bits (D0–D7) on the rising edge of the clock (CP) and holds them on Q0–Q7. An Output Enable (OE/G) controls the tri-state outputs, allowing the bus to be shared or tri-stated when not driving. The device runs on 4.5–5.5 V and has TTL-compatible inputs (HCT). It is a 20-pin device, with the DWR suffix indicating a specific TI packaging/tape-and-reel option. Typical uses include buffering or latching data between a microcontroller or processor and a bus or memory, enabling simple register-based storage and bus interfacing.

Equivalent parts (8-bit D-type register with 3-state outputs) in the 74HCT/74AHCT family:
- Nexperia (formerly Philips): 74HCT273 (e.g., 74HCT273D, 74HCT273N)
- ON Semiconductor: 74HCT273 (D/N package variants)
- TI: SN74AHCT273 (pin-compatible with SN74HCT273)
Note: packaging and suffix vary; ensure the same 5V operation and identical pinout (OE, CLK, D, Q, etc.).

- Octal D-type register with 3-state outputs (8-bit storage)
- Edge-triggered storage: data captured on the rising edge of the clock
- D0–D7 data inputs and Q0–Q7 outputs
- Output Enable (OE) to tri-state the outputs (high-impedance when enabled)
- TTL-compatible inputs; operates with 4.5V–5.5V supply (HCT family)
- Low-power BiCMOS/CMOS design for typical fast logic applications
- Suitable for bus storage, buffering, and data routing in mixed-signal Systems on Chip (SoC) or microprocessor interfaces
- Available in TI’s DWR package variant (surface-mount)

- Pin count: 20 pins (in common packages like DIP-20 or SOIC-20).
- Function: An 8-bit edge-triggered storage register with 3-state outputs. D0–D7 are data inputs, CP is the clock, Q0–Q7 are outputs, and G (output enable) controls tri-state on the outputs. On a rising clock edge, D0–D7 are latched into the register and presented on Q0–Q7 when outputs are enabled.

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog and digital integrated circuits and other electronics components.

SN74HCT273DWR is an 8-bit edge-triggered D-type register with tri-state outputs. Key applications include:
- Microprocessor/microcontroller data and address bus interfacing (demultiplexing and buffering)
- 8-bit data latch/buffer between CPU and memory or peripherals with OE control for bus sharing
- Data-path buffering and timing alignment in memory interfaces and pipelines
- Data acquisition and display buffering, DSP/I/O interfaces
- Expandable I/O and simple bus buffering in digital systems
In short, it serves as an 8-bit storage/register with controllable tri-state outputs for timing, buffering, and bus isolation.

20-pin wide SOIC (Small Outline). The suffix DWR means D package, wide body, taped/reel (packaging).