圖片僅供參考

SN74LS541DWR

Name: SN74LS541DWR
Rating: 4.7 (12 reviews)

IC BUF NON-INVERT 5.25V 20SOIC

製造商
製造商。部分 #SN74LS541DWR
包 SOIC (DW)-20
資料表
有現貨的8333

+BOM RFQ

100%原創；新

24小時準備發貨

365天保修

RFQ&；獲得更多折扣

規格

Package	Tape & Reel (TR),Cut Tape (CT)
Series	74LS
ProductStatus	Active
LogicType	Buffer, Non-Inverting
NumberofElements	1
NumberofBitsperElement	8
OutputType	3-State
Current-OutputHighLow	15mA, 24mA
Voltage-Supply	4.75V ~ 5.25V
OperatingTemperature	0°C ~ 70°C (TA)
MountingType	Surface Mount
Package/Case	20-SOIC (0.295, 7.50mm Width)

概述

Description

SN74LS541DWR is an octal buffer/line driver with tri-state outputs in the 74LS TTL family. It buffers eight data lines (A0–A7) to eight outputs (Y0–Y7) and can place all outputs in a high-impedance state via enable inputs, making it suitable for sharing a data bus between devices. The DWR suffix indicates a 20-pin wide DIP package (TI packaging). Typical use cases include buffering data between a CPU and memory or peripherals, isolating loads, and restoring bus levels in microprocessor systems. Electrical characteristics are TTL-compatible with a 4.5–5.5 V supply, moderate output drive (tens of mA), and propagation delays in the tens of nanoseconds range depending on load. For exact pinout, control signals, drive strength, and maximum ratings, consult the TI datasheet for SN74LS541DWR.

Features

SN74LS541DWR features:
- 8-bit buffer/driver with 3-state (tri-state) outputs
- Non-inverting buffers; data flows from A inputs to Y outputs
- Output Enable (OE) controls tri-state outputs (high impedance when disabled)
- TTL-compatible inputs; operates at 4.5–5.5 V
- Low-power LS-TTL device; suitable for bus buffering
- Fast LS-TTL performance for standard logic timing
- Available in DWR package
Note: Primarily used for buffering an 8-bit data bus or interfacing between incompatible logic levels.

Package

The SN74LS541DWR is in a 20-pin plastic DIP (DIP-20) package (DWR suffix indicates this package type).

Pinout

- Pin count: 20 pins (20-pin package, e.g., DIP/SOIC).
- Function: Octal buffer/line driver with 3-state outputs. It has 8 data inputs (A1–A8) and 8 outputs (Y1–Y8); a single enable input (G) controls whether the outputs drive the bus (enabled) or go high-impedance (disabled).

Manufacturer

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

Application

- Octal buffer/line driver with 3-state outputs
- Bus buffering and isolation in microprocessor/microcontroller systems
- Interfacing CPU/data/address buses to memory and I/O peripherals
- Bus sharing via tri-state enable
- Signal buffering and fan-out expansion; TTL/CMOS interfacing within 5V systems

Equivalent

SN74LS541DWR is an octal buffer/driver with 3-state outputs (74LS family). Equivalents from other vendors include:
- DM74LS541 (National Semiconductor)
- MC74LS541 / MM74LS541 (Motorola/ON Semi heritage)
- TC74LS541 (Toshiba)
- 74HCT541 (CMOS TTL-compatible)
- 74HC541 / 74VHC541 (CMOS variants)
Note: check pinouts and voltage thresholds; substitutions may require minor footprint or logic-level adjustments.