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SN74HCT273PWR

Name: SN74HCT273PWR
Rating: 4.7 (12 reviews)

IC FF D-TYPE SNGL 8BIT 20TSSOP

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資料表 SN74HCT273PWR DataSheet
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規格

Supplier	Texas Instruments,Rochester Electronics, LLC
Package	Tape & Reel (TR),Cut Tape (CT),Bulk
Series	74HCT
ProductStatus	Active
Function	Master Reset
Type	D-Type
OutputType	Non-Inverted
NumberofElements	1
NumberofBitsperElement	8
ClockFrequency	37 MHz
MaxPropagationDelay@VMaxCL	29ns @ 5.5V, 50pF
TriggerType	Positive Edge
Current-OutputHighLow	4mA, 4mA
Voltage-Supply	4.5V ~ 5.5V
Current-Quiescent(Iq)	8 µA
InputCapacitance	3 pF
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
SupplierDevicePackage	20-TSSOP

概述

Description

SN74HCT273PWR is an 8‑bit, edge‑triggered D-type register with 3‑state outputs from TI’s HCT family.
Key points:
- D inputs: D0–D7; Q outputs: Q0–Q7
- Clock: CP; data is launched on the rising edge of CP
- Outputs: 3‑state, controlled by OE (active-low). When OE is low, Q reflects stored data; when OE is high, outputs are high-impedance
- Features: no asynchronous clear/preset; data remains until next clock
- Voltage and compatibility: typically 4.5–5.5 V supply; TTL‑compatible inputs (HCT)
- Package: 20‑pin DIP/SOIC variants (PWR suffix denotes a specific TI packaging option)
Typical uses:
- Storing and buffering bytes in microprocessor or bus interfaces
- Temporary data storage in digital systems
- Part of register banks, shift/register chains, or bus drivers
Important note:
- Manage OE to avoid bus contention on shared lines.

Features

Here are the key features of SN74HCT273PWR (octal D-type register with 3-state outputs):
- 8-bit storage register with 3-state outputs (Q0–Q7)
- Positive-edge–triggered D-type register
- Independent Output Enable (OE) for tri-state outputs
- TTL-compatible input thresholds (HCT family)
- 4.5 V to 5.5 V operation (5 V logic)
- Low-power CMOS design
- Bus-interface ready: must be tri-stated when OE is disabled
- Pin-compatible with similar devices (LS/HC families) for easy replacement
- Available in PowerPAD/standard packages (PWR suffix), various surface-mount/DIP options
Applications: data buffering, address/data latching, bus interfacing, and temporary storage in digital systems.

Package

20-pin Plastic Small-Outline (SOIC-20) package, RoHS-compliant.

Pinout

- Pin count: 20 pins (20-pin package, e.g., DIP/SOIC).
- Function: 8-bit, edge-triggered D-type register with 3-state outputs. It captures D0–D7 on the rising edge of the clock (CLK) and presents them on Q0–Q7; outputs can be tri-stated via the Output Enable (OE). Power pins (Vcc/GND) are included.

Manufacturer

Manufacturer: Texas Instruments (TI).
Type of company: American multinational semiconductor company that designs and manufactures analog and digital integrated circuits and related electronics components.

Application

SN74HCT273PWR is an 8-bit D-type register with tri-state outputs. Applications:
- Buffering and latching data on microprocessor/microcontroller buses
- Demultiplexing address/data buses in multiplexed systems
- Temporary storage/pipeline stage in digital designs
- Bus driver/interface between CPUs, memory, and peripherals for expandable I/O in TTL/CMOS systems

Equivalent

Equivalent parts are other 8-bit D-type registers with 3-state outputs in the 74xx273 family. Examples:
- 74HCT273 (AHCT variants such as MC74HCT273 across vendors)
- 74AHCT273
- 74LS273 / 74ALS273
- 74LVC273
Note: packaging and supply voltages differ; verify pinout, OE, and clock signals match your design.