SN74HCS574QPWRQ1

SN74HCS574QPWRQ1 is an 8-bit, edge-triggered D-type storage register with 3-state outputs from Texas Instruments. It stores D0–D7 into an internal register on the rising edge of CLK and presents the stored data on Q0–Q7 when the Output Enable (OE) input is asserted (low). If OE is deasserted (high), all Q outputs go high-impedance, allowing bus sharing.
Key points:
- 8-bit register with 8 D inputs, 8 Q outputs
- Clocked on rising edge; no asynchronous clear
- OE (active low) enables/tri-states outputs
- CMOS HCS family: fast operation, TTL-compatible inputs
- Supply: typically 2–6 V (common 4.5–5.5 V)
- 20-pin package (QFP/SSOP style with PowerPAD option in PWR variant)
Common uses:
- Latched data buffering and bus interfacing
- Data storage for microprocessors or digital systems
- Demultiplexing/addressing interfaces
Note: Check the exact speed grade and timing from the datasheet for clock-to-Q, setup/hold, and leakage specs for your chosen operating conditions.

Equivalents (octal D-type register with 3-state outputs) include:
- TI: SN74HC574, SN74HCT574, SN74ALS574, SN74AS574
- Cross vendors: 74HC574, 74HCT574 (NXP/ON Semiconductor), MC74HC574, MC74HCT574, 74ALS574, 74AS574
Note: check exact packaging/pinouts for your application.

- 8-bit D-type, edge-triggered register with 3-state outputs (Q0–Q7)
- Data captured on rising edge of clock (CLK)
- Output Enable (OE) input, active low, to tri-state outputs
- D0–D7 inputs; Q0–Q7 outputs
- High-speed CMOS 74HCS family; low power consumption
- Wide supply range: Vcc typically 4.5–5.5 V (2 V to 6 V tolerant in many HCS parts)
- Pb-free, RoHS-compliant package options (QPW,RQ1 variants)
- Applications: data buffering/storage, bus interfacing, address/data latch/drive
Note: This summarizes key features; refer to the datasheet for exact electrical specs and package details.

- Pin count: 20 pins (D0–D7, Q0–Q7, CLK, OE, VCC, GND, plus other power/ground pins as per package)
- Function: Octal D-type register with 3-state outputs. Eight data inputs (D0–D7) are latched to eight outputs (Q0–Q7) on the rising clock edge; outputs can be tri-stated via the output-enable (OE) input.

Texas Instruments (TI). TI is an American multinational semiconductor company that designs, manufactures, and sells integrated circuits and other electronics components (analog, digital, logic, microcontrollers, etc.) used across many industries.

SN74HCS574QPWRQ1 is an 8-bit edge-triggered D-type register with tri-state outputs. Typical applications:
- Microprocessor/microcontroller bus interface and multiplexed address/data bus latching
- Memory and I/O expansion: buffering/isolating CPU from peripherals during bus cycles
- Data buffering and preloading for high-speed data transfer and pipelining
- General-purpose 8-bit register with controlled bus sharing (tri-state)
In short, it serves as a fast, controllable 8-bit storage and buffer for bus interfacing and timing-critical data paths.

A 20-pin surface-mount Small Outline package (SOIC), RoHS-compliant.