SN74AHC273PWR

The SN74AHC273PWR is an 8-bit D-type transparent latch with 3-state outputs from Texas Instruments. It has eight D inputs (D0–D7) and eight Q outputs (Q0–Q7). A latch-enable (LE) makes the device transparent when high (Q follows D) and latches the value when LE goes low. An output-enable (OE) controls tri-state outputs, allowing the bus to be shared when disabled. It's part of the 74AHC family, offering high-speed CMOS with low power, typically operating from a supply in the 2.0–5.5 V range and accepting CMOS/TTL input levels. Common uses include data buffering, address/data demultiplexing, and simple register storage in microprocessor or peripheral interfaces. The PWR suffix denotes a specific TI packaging option (RoHS-compliant plastic variant).

Equivalents (8-bit D-type transparent latch with 3-state outputs) from other vendors include:
- Nexperia 74AHC273
- ON Semiconductor MC74AHC273
- 74HC273 / 74HCT273 / 74ACT273 family parts (TTL-compatible variants)
Note: packaging/pinout may vary; ensure same voltage ratings and PowerPAD/PWR package compatibility.

Concise features of SN74AHC273PWR:
- 8-bit D-type transparent latch with 3-state outputs
- Latch-enable (LE) input: when LE is high, Dn passes to Qn; when LE goes low, Qn holds the latched value
- Output-enable (OE) input to place all eight outputs in high-impedance state (bus-friendly)
- Wide operating voltage: Vcc = 2.0 V to 5.5 V (CMOS AHC family)
- TTL/CMOS input compatibility
- High-speed CMOS performance suitable for fast logic paths
- Low power consumption (static/dynamic) for embedded/bus applications
- Available in TI “PWR” package variants for standard surface-mount/bus layouts
Note: OE is the output-enable control (tri-state) and LE is the latch-control; data is captured and held per LE, then optionally tri-stated via OE.

- Pin count: 20 pins (D0–D7 inputs, Q0–Q7 outputs, CP clock, G output enable, Vcc, GND).
- Function: 8-bit D-type edge-triggered register with 3-state outputs. Data on D0–D7 is captured on the rising edge of CP; Q0–Q7 present the stored data when G (OE) is low; outputs go high-impedance when G is high.

- Manufacturer: Texas Instruments (TI).
- Company type: An American multinational semiconductor company that designs, manufactures, and sells analog and digital integrated circuits and embedded processing solutions.

SN74AHC273PWR is an 8-bit registered data path with 3-state outputs (tri-state). Data is captured on the rising clock edge and presented to the bus when OE is active.
Common application areas:
- 8-bit data storage/buffering between devices and clock domains
- Clocked data latch/register for demultiplexed/address-data buses
- Glue logic for microcontroller/processor interfaces to isolate and synchronize peripherals
- Temporary data storage for registers, decoders, and memory controllers
- High-speed digital systems requiring a compact, fast register buffer (e.g., DSP, interfaces)

SN74AHC273PWR is in a 20-pin TSSOP package with an exposed pad (PowerPAD).