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SN74HC374PWR

Name: SN74HC374PWR
Rating: 4.7 (12 reviews)

IC FF D-TYPE SNGL 8BIT 20TSSOP

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資料表 SN74HC374PWR DataSheet
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規格

Supplier	Texas Instruments
Package	Tape & Reel (TR),Cut Tape (CT)
Series	74HC
ProductStatus	Active
Function	Standard
Type	D-Type
OutputType	Tri-State, Non-Inverted
NumberofElements	1
NumberofBitsperElement	8
ClockFrequency	70 MHz
MaxPropagationDelay@VMaxCL	31ns @ 6V, 50pF
TriggerType	Positive Edge
Current-OutputHighLow	7.8mA, 7.8mA
Voltage-Supply	2V ~ 6V
Current-Quiescent(Iq)	8 µA
InputCapacitance	3 pF
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
SupplierDevicePackage	20-TSSOP

概述

Description

SN74HC374PWR is an octal D-type register (8-bit) with 3-state outputs from TI’s 74HC CMOS family. It stores 8 bits in parallel and captures the D0–D7 data on the rising edge of the clock (CLK). The stored data appear on Q0–Q7 and can be enabled or put into high-impedance with the output-enable (OE) input (OE active low). When OE is low, the Q outputs reflect the stored data; when OE is high, the outputs are tri-stated, allowing bus sharing.
Key points:
- D inputs: D0–D7; Q outputs: Q0–Q7
- Clocked on rising edge; OE controls tri-state
- Supply: 2–6 V (typical 5 V)
- RoHS-compliant package variant (PWR suffix)
- Pinout: standard 20-pin HC device (D, Q, CLK, OE, Vcc, Gnd)
Common uses: data storage, buffering, bus interface, and demultiplexing in microprocessors and digital systems.

Features

Here are the key features of SN74HC374PWR:
- 8-bit D-type transparent latch with 3-state outputs
- D inputs (D0–D7) and Q outputs (Q0–Q7)
- Latch enable via CLK: Q follows D while CLK is high; holds when CLK is low
- Output enable (OE) is active-low (tri-states outputs when OE is high)
- Ioff supports partial-power-down (no back-powering)
- Wide supply range: Vcc = 2.0 to 6.0 V; 3.3/5.0 V logic compatible
- Low static/dynamic CMOS HC technology (high noise margin and fast operation)
- Industrial temperature range: typically -40°C to 125°C
- Available in standard TI packages (e.g., DIP, SOIC) with PWR variant options
用途: data storage/bus latch, address/data buffering, and peripheral data paths.

Package

20-pin Plastic Small-Outline Package (SOIC), typically the PW (Plastic Wide SOIC) variant; R denotes tape-and-reel packaging.

Pinout

- Pin count: 20 pins (D0–D7, Q0–Q7, CLK, OE, Vcc, GND, etc.).
- Function: SN74HC374PWR is an octal D-type register with 3‑state outputs. It captures the 8 data inputs (D0–D7) on the rising edge of the clock input, and presents them at Q0–Q7. The outputs are tri-statable via the Output Enable (OE) input.

Manufacturer

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

Application

SN74HC374PWR is an octal, edge-triggered D-type register with 3-state outputs. Applications:
- Buffering/latching 8-bit data between a CPU/peripheral and buses
- Latching address/data on multiplexed buses (address latch)
- Pipelining and timing control in digital systems
- Driving/holding data to displays or display drivers
- Bus sharing with tri-state outputs to isolate devices on a shared bus system

Equivalent

Equivalent products (5V, 8-bit D-type latch with 3-state outputs):
- 74HC374N (Nexperia)
- 74HC374D (STMicroelectronics / On Semiconductor)
- 74HCT374N (TTL-compatible version)
- 74HCT374D (TTL-compatible version)
- Renesas uPD74HC374GB
In short, any 74HC/74HCT octal D-latch with OE can be a drop-in substitute.