SN74HCS541PWR - Octal Buffer/Line Driver with Schmitt-Trigger Inputs | Texas Instruments
MPN: SN74HCS541PWR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.35 | $0.35 |
| 10 | $0.3 | $3.00 |
| 100 | $0.25 | $25.00 |
| 500 | $0.2 | $100.00 |
| 1,000 | $0.18 | $180.00 |
Drop-in alternatives for SN74HCS541PWR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
SN74HC541PWR
β Drop-Inπ Reference alternative (not in catalog)
SN74HCT541PWR
β Drop-Inπ Reference alternative (not in catalog)
SN74LVC541APWR
β Drop-Inπ Reference alternative (not in catalog)
74HCT541PW
β Drop-Inπ Reference alternative (not in catalog)
SN74HCS541PWR Maximum Ratings & Electrical Characteristics
| Number of Channels | 8 |
| Logic Family | HCS |
| Output Type | 3-State |
| Input Type | Schmitt-Trigger |
| Supply Voltage Range | 2 V to 6 V |
| Output Current (IOL/IOH) | 6 mA at 4.5 V |
| Propagation Delay Time | [DATA_NEEDED: Propagation Delay Time] |
| Input Hysteresis | 0.4 V typical at 4.5 V |
| Quiescent Current (ICC) | 20 Β΅A at 6 V |
| Operating Temperature Range | -40Β°C to +125Β°C |
| Package Type | TSSOP-20 (PW) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| REACH Status | Compliant |
| Lead-Free | Yes |
SN74HCS541PWR Pin Configuration
| Pin 1 | OE β Output enable (active low) |
| Pin 2 | A1 β Input 1 |
| Pin 3 | A2 β Input 2 |
| Pin 4 | A3 β Input 3 |
| Pin 5 | A4 β Input 4 |
| Pin 6 | A5 β Input 5 |
| Pin 7 | A6 β Input 6 |
| Pin 8 | A7 β Input 7 |
| Pin 9 | A8 β Input 8 |
| Pin 10 | GND β Ground |
| Pin 11 | Y8 β Output 8 |
| Pin 12 | Y7 β Output 7 |
| Pin 13 | Y6 β Output 6 |
| Pin 14 | Y5 β Output 5 |
| Pin 15 | Y4 β Output 4 |
| Pin 16 | Y3 β Output 3 |
| Pin 17 | Y2 β Output 2 |
| Pin 18 | Y1 β Output 1 |
| Pin 19 | VCC β Power supply |
| Pin 20 | NC β No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
SN74HCS541PWR is suitable for 6 applications: Bus Buffering in Microcontroller Systems, Memory Address and Data Line Driving, Signal Conditioning for Sensors, Level Shifting Between 3.3V and 5V Logic, Industrial Automation and Control, Automotive Electronics.
Bus Buffering in Microcontroller Systems
The SN74HCS541PWR is ideal for buffering address and data buses in microcontroller systems. Its 3-state outputs allow multiple devices to share the bus without contention. The Schmitt-trigger inputs ensure reliable operation even with noisy or slow-rising signals, which is common in long PCB traces. The wide 2 V to 6 V supply range makes it compatible with both 3.3 V and 5 V microcontrollers, providing a simple interface between different logic levels. The flow-through pinout simplifies PCB routing, reducing crosstalk and improving signal integrity.
Recommended
Memory Address and Data Line Driving
In memory systems, the SN74HCS541PWR can drive address and data lines to multiple memory devices. Its 6 mA output current at 4.5 V is sufficient for driving capacitive loads of up to 50 pF. The 3-state outputs allow the memory bus to be shared with other peripherals. The Schmitt-trigger inputs reject noise from long traces, ensuring reliable data transfer. The wide operating temperature range (-40Β°C to +125Β°C) makes it suitable for industrial memory modules. The flow-through pinout aligns inputs and outputs, simplifying layout and reducing signal skew.
Recommended
Signal Conditioning for Sensors
The SN74HCS541PWR is well-suited for conditioning signals from sensors that have slow rise times or are susceptible to noise. The Schmitt-trigger inputs convert noisy or slow analog-like signals into clean digital outputs. The wide supply voltage range allows it to interface with various sensor supply voltages. The 3-state outputs enable multiple sensors to share a common data line. The device's low quiescent current (20 Β΅A) is beneficial for battery-powered sensor nodes. The TSSOP-20 package is compact, saving PCB space in sensor modules.
Recommended
Level Shifting Between 3.3V and 5V Logic
The SN74HCS541PWR can be used for level shifting between 3.3 V and 5 V logic domains. Its wide supply voltage range (2 V to 6 V) allows it to operate from either rail, and the Schmitt-trigger inputs accept both 3.3 V and 5 V logic levels. The 3-state outputs prevent bus contention when multiple devices are connected. The device provides bidirectional level shifting when used with external pull-up resistors. The flow-through pinout simplifies routing in mixed-voltage designs. This makes it a cost-effective solution for interfacing legacy 5 V peripherals with modern 3.3 V microcontrollers.
Recommended
Industrial Automation and Control
In industrial automation, the SN74HCS541PWR is used to buffer control signals between PLCs, sensors, and actuators. Its wide operating temperature range (-40Β°C to +125Β°C) ensures reliable operation in harsh environments. The Schmitt-trigger inputs reject electrical noise from motors and other industrial equipment. The 3-state outputs allow multiple controllers to share a common bus. The device's robust design and high noise immunity make it ideal for factory floor applications. The TSSOP-20 package is suitable for compact PLC modules.
Recommended
Automotive Electronics
The SN74HCS541PWR is suitable for automotive electronics, such as body control modules and infotainment systems. Its wide operating temperature range (-40Β°C to +125Β°C) meets automotive requirements. The Schmitt-trigger inputs provide immunity to electrical noise from the vehicle's electrical system. The 3-state outputs allow multiple ECUs to share a communication bus. The device is AEC-Q100 qualified (check specific variant), ensuring reliability in automotive applications. The compact TSSOP-20 package fits in space-constrained automotive PCBs.
Recommended
Recommended Products Summary
Engineering reference data for SN74HCS541PWR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74HC541PWR | SN74HCT541PWR | SN74LVC541APWR | 74HCT541PW |
|---|---|---|---|---|---|
| Package | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) | TSSOP-20 (PW) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Supply Voltage Range | 2 V to 6 V | 2 V to 6 V | 4.5 V to 5.5 V | 1.65 V to 3.6 V | 4.5 V to 5.5 V |
| Input Type | Schmitt-Trigger | Standard | Standard | Standard | Standard |
| Output Current (IOL/IOH) | 6 mA at 4.5 V | 6 mA at 4.5 V | 6 mA at 4.5 V | 24 mA at 3.3 V | 6 mA at 4.5 V |
| Propagation Delay Time | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Operating Temperature Range | -40Β°C to +125Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +125Β°C | -40Β°C to +125Β°C |
| Quiescent Current (ICC) | 20 Β΅A at 6 V | 20 Β΅A at 6 V | 20 Β΅A at 5.5 V | 10 Β΅A at 3.3 V | 20 Β΅A at 5.5 V |
Key Differentiators
- Schmitt-trigger inputs for superior noise immunity (vs SN74HC541PWR)
- Wider operating temperature range (vs SN74HC541PWR)
- Wide supply voltage range (vs SN74LVC541APWR)
Design Notes
The SN74HCS541PWR operates from 2 V to 6 V. Ensure the supply voltage is within this range and is stable. Use a 0.1 Β΅F decoupling capacitor placed as close as possible to the VCC and GND pins to filter high-frequency noise. For higher current applications, consider a larger bulk capacitor (e.g., 10 Β΅F) on the power rail.
The flow-through pinout of the SN74HCS541PWR simplifies PCB layout by aligning inputs on one side and outputs on the other. Keep traces short and direct to minimize parasitic capacitance and crosstalk. Use ground planes to reduce noise. For high-speed signals, maintain controlled impedance if necessary.
Do not leave the output enable (OE) pin floating; tie it to GND to enable outputs or to VCC to disable them. Floating inputs can cause excessive current draw and unpredictable behavior. Also, avoid bus contention by ensuring only one device drives the bus at a time. The Schmitt-trigger inputs tolerate slow edges, but for best performance, keep input rise/fall times within datasheet limits.
Compliance Information
RoHS and REACH compliant per TI product page. AEC-Q100 qualification not specified for this part.
