Specifications
| Type | Description |
|---|---|
| Part Number | SN74HC541 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Package / Case | SOIC-20 12.80 mm x 7.50 mm; SSOP-20 7.20 mm x 5.30 mm; PDIP-20 24.33 mm x 6.35 mm; SO-20 12.60 mm x 5.30 mm; TSSOP-20 6.50 mm x 4.40 mm; CDIP-20 24.20 mm x 6.92 mm; LCCC-20 8.89 mm x 8.89 mm |
| Inferred Category | Signal_Chain |
| Component Type | Other |
| Logic Function | Octal buffers and line drivers with 3-state outputs; SNx4HC541 family |
| Output Logic Polarity | True data at outputs; outputs enabled |
| Output Enable Control | OE1 and OE2 active low; either OE high places all outputs in high-impedance state; 3-state output control |
| Channel Count | 8 channels; A1-A8 inputs, Y1-Y8 outputs |
| Recommended Supply Voltage | 2 V min, 5 V nominal, 6 V max; recommended operating conditions |
| Absolute Maximum Supply Voltage | -0.5 V to 7 V; over operating free-air temperature range |
| High-Level Input Voltage | 1.5 V min; VCC=2 V |
| High-Level Input Voltage | 3.15 V min; VCC=4.5 V |
| High-Level Input Voltage | 4.2 V min; VCC=6 V |
| Low-Level Input Voltage | 0.5 V max; VCC=2 V |
| Low-Level Input Voltage | 1.35 V max; VCC=4.5 V |
| Low-Level Input Voltage | 1.8 V max; VCC=6 V |
| Recommended Input Voltage Range | 0 V to VCC; recommended operating conditions |
| Recommended Output Voltage Range | 0 V to VCC; recommended operating conditions |
| Input Transition Rise and Fall Time | 1000 ns max; VCC=2 V |
| Input Transition Rise and Fall Time | 500 ns max; VCC=4.5 V |
| Input Transition Rise and Fall Time | 400 ns max; VCC=6 V |
| Operating Free-Air Temperature | -40°C to 85°C; SN74HC541 |
| Operating Free-Air Temperature | -55°C to 125°C; SN54HC541 |
| Input Clamp Current | ±20 mA max; VI < 0 V or VI > VCC |
| Output Clamp Current | ±20 mA max; VO < 0 V or VO > VCC |
| Continuous Output Current | ±35 mA max; VO=0 V to VCC |
| Continuous Current Through VCC or GND | ±70 mA max; absolute maximum ratings |
| Storage Temperature | -65°C to 150°C; absolute maximum ratings |
| ESD Rating HBM | ±2000 V; ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±1000 V; ANSI/ESDA/JEDEC JS-002 |
| High-Level Output Voltage | 4.4 V min, 4.499 V typ; TA=25°C, VCC=4.5 V, IOH=-20 µA, VI=VIH or VIL |
| High-Level Output Voltage | 3.98 V min, 4.3 V typ; TA=25°C, VCC=4.5 V, IOH=-6 mA |
| Low-Level Output Voltage | 0.17 V typ, 0.26 V max; TA=25°C, VCC=4.5 V, IOL=6 mA |
| Input Current | ±0.1 nA typ, ±100 nA max; TA=25°C, VCC=6 V, VI=VCC or 0 V |
| Off-State Output Current | ±0.01 µA typ, ±0.5 µA max; TA=25°C, VCC=6 V, VO=VCC or 0 V |
| Supply Current | 8 µA max; TA=25°C, VCC=6 V, VI=VCC or 0 V, IO=0 |
| Input Capacitance | 3 pF typ, 10 pF max; TA=25°C, VCC=2 V to 6 V |
| Supply Current | 80 µA max; SN74HC541, VCC=6 V, VI=VCC or 0 V, IO=0 |
| Propagation Delay | 12 ns typ, 23 ns max; TA=25°C, CL=50 pF, VCC=4.5 V, A to Y |
| Output Enable Time | 17 ns typ, 30 ns max; TA=25°C, CL=50 pF, VCC=4.5 V, OE to Y |
| Output Disable Time | 18 ns typ, 30 ns max; TA=25°C, CL=50 pF, VCC=4.5 V, OE to Y |
| Output Transition Time | 8 ns typ, 12 ns max; TA=25°C, CL=50 pF, VCC=4.5 V, Y output |
| Propagation Delay | 29 ns max; SN74HC541, CL=50 pF, VCC=4.5 V, A to Y, over recommended operating free-air temperature range |
| Output Enable Time | 38 ns max; SN74HC541, CL=50 pF, VCC=4.5 V, OE to Y, over recommended operating free-air temperature range |
| Output Disable Time | 38 ns max; SN74HC541, CL=50 pF, VCC=4.5 V, OE to Y, over recommended operating free-air temperature range |
| Junction-to-Ambient Thermal Resistance | 109.1°C/W; SN74HC541DW SOIC-20 |
| Datasheet Status | request_only |
Product Overview
The SN74HC541 is a Texas Instruments octal buffer line driver in the Signal_Chain category. It implements eight A-to-Y channels with true data at the outputs when enabled. Output control is handled by OE1 and OE2, both active low; if either output-enable input is high, all outputs enter the high-impedance state.
Recommended supply operation is 2 V minimum, 5 V nominal, and 6 V maximum, with recommended input and output voltage ranges of 0 V to VCC. Logic thresholds scale with supply voltage, including VIH minimums of 1.5 V at 2 V, 3.15 V at 4.5 V, and 4.2 V at 6 V. VIL maximums are 0.5 V, 1.35 V, and 1.8 V at those same supply points.
Package options include SOIC-20, SSOP-20, PDIP-20, SO-20, TSSOP-20, CDIP-20, and LCCC-20 footprints. The SN74HC541 operating free-air temperature range is -40°C to 85°C, while the related SN54HC541 range is -55°C to 125°C. The 3-state outputs support bus buffering, line driving, and controlled output isolation in digital signal paths.
Key Features
- Octal buffer and line-driver logic function
- Eight A-input to Y-output channels
- True data appears at enabled outputs
- 3-state outputs controlled by OE1 and OE2
- Either high OE input disables all outputs
- 2 V to 6 V recommended supply range
- 0 V to VCC recommended input range
- 12 ns typical A-to-Y delay at 4.5 V
- 17 ns typical OE-to-Y enable time at 4.5 V
- SOIC, SSOP, PDIP, SO, TSSOP, CDIP, LCCC packages
Typical Applications
- Parallel bus buffering
- Digital line driving
- 3-state output isolation
- Eight-bit signal buffering
- Logic-level signal distribution
- Controlled bus connection
- High-impedance output gating
Procurement Notes
When requesting a quote for SN74HC541, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What logic function does the SN74HC541 provide?
The SN74HC541 provides octal buffer and line-driver logic with 3-state outputs. It has eight A1-A8 inputs and Y1-Y8 outputs, and true data appears at the outputs when the device is enabled.
How are the SN74HC541 outputs enabled or disabled?
OE1 and OE2 are active-low output-enable controls. When outputs are enabled, true data appears at Y1-Y8. If either OE input is high, all outputs are placed in the high-impedance state.
What supply voltage range is recommended for SN74HC541 operation?
The recommended supply voltage range is 2 V minimum, 5 V nominal, and 6 V maximum. The recommended input and output voltage ranges are both 0 V to VCC under recommended operating conditions.
What packages are listed for the SN74HC541?
Listed package options include SOIC-20, SSOP-20, PDIP-20, SO-20, TSSOP-20, CDIP-20, and LCCC-20, with dimensions specified for each 20-pin package style in the extracted datasheet facts.
What timing is specified at VCC equals 4.5 V?
At TA=25°C, CL=50 pF, and VCC=4.5 V, A-to-Y propagation delay is 12 ns typical and 23 ns maximum. OE-to-Y enable time is 17 ns typical and 30 ns maximum, while disable time is 18 ns typical and 30 ns maximum.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 13, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.