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onsemi SN74LS05M
- Part No.:
- SN74LS05M
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
SN74LS05M.pdf
- Description:
- IC INVERTER
- Quantity:
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- Shipping:
Inventory:4,700
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Product details
Overview
SN74LS05M from ON Semiconductor is a hex inverter with open-collector outputs, designed for TTL-level logic inversion and wired-OR bus interfacing. It operates at 5 V (4.75–5.25 V), delivers 8 mA sink current per output, and exhibits 15–32 ns propagation delay across 0–70°C ambient temperature range. It is used in address decoding, bus arbitration, and level-shifting circuits in industrial control systems.
For engineers reviewing the SN74LS05M datasheet, pinout, applications, or equivalent options, key selection criteria include open-collector drive capability, guaranteed 8 mA IOL at VCC min, TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), and SOEIAJ-14 package compatibility with legacy board layouts.
Technical Context
The SN74LS05M implements six independent inverting buffers using low-power Schottky (LS) TTL technology. Each output is an open-collector transistor requiring external pull-up to define HIGH state logic level and enable wired-OR functionality.
It guarantees VIH ≥ 2.0 V and VIL ≤ 0.8 V over full temperature range, supports 0.25–0.5 V VOL at 4–8 mA sink load, and maintains tPLH/tPHL between 15–32 ns under standard 15 pF capacitive load and 2 kΩ pull-up conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 4.75–5.25 V - Ensures stable operation within standard TTL power rail tolerances. |
| IOL Sink Current | 8.0 mA - Supports direct driving of LEDs, relays, or multiple TTL inputs without external buffering. |
| VOL Output LOW | 0.25–0.5 V @ 4–8 mA - Guarantees robust noise margin when sinking load current. |
| tPLH / tPHL | 15–32 ns - Enables reliable timing in 20–30 MHz clocked bus control and address strobe applications. |
| VIH / VIL | 2.0 V / 0.8 V - Ensures interoperability with standard 74LS, 74S, and 74F family inputs. |
| Operating Temp | 0–70°C - Qualified for commercial-grade embedded and instrumentation environments. |
Pinout & Package
SN74LS05M is housed in a 14-pin SOEIAJ (Small Outline EIAJ) plastic package (Case 965), measuring 8.55 × 3.80 mm with 1.27 mm lead pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Inverter Input | Accepts TTL-compatible digital signals; VIH ≥ 2.0 V, VIL ≤ 0.8 V. |
| 2, 4, 6, 8, 10, 12 | Inverter Output (Open Collector) | Drains current only; requires external pull-up for HIGH logic assertion. |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry. |
| 14 | VCC | +5 V supply input; decoupling capacitor recommended adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Open-collector outputs | Enables wired-OR logic, bus arbitration, and mixed-voltage interface via external pull-up selection. |
| Low-power Schottky (LS) process | Reduces power consumption vs. standard TTL while maintaining speed-2.4 mA ICC (HIGH), 6.6 mA (LOW). |
| Guaranteed 8 mA sink per output | Directly drives up to 20 standard TTL loads or small-signal discrete devices without buffer stages. |
| TTL-compatible input thresholds | Ensures seamless integration into existing 74LS-based systems without level translation. |
Applications
| Industrial Bus Arbitration | LED Status Indication |
|---|---|
Use Scenario: Multiple microcontrollers share a common status bus with priority resolution. IC Role / Device Role / Timing Role: Inverter with open-collector output acts as bidirectional bus driver enabling wired-OR handshake signaling. Use Value: Eliminates need for external diodes or dedicated bus transceivers; supports deterministic arbitration using pull-up resistor networks. | Use Scenario: Microcontroller GPIO pins lack sufficient sink current to drive indicator LEDs directly. IC Role / Device Role / Timing Role: Logic inverter configured as active-low LED driver with current-limiting resistor on VCC side. Use Value: Provides 8 mA sink capability per channel-enough for bright visible LEDs while preserving MCU I/O integrity. |
| Legacy System Address Decoding | Level Translation Interface |
Use Scenario: 8-bit microprocessor system uses NAND-based address decoders requiring inverted chip-select signals. IC Role / Device Role / Timing Role: Generates complementary enable signals for memory-mapped peripherals with precise 15–32 ns delay matching. Use Value: Matches propagation delay of companion LS-family decoders (e.g., 74LS138), ensuring setup/hold timing compliance. | Use Scenario: Interfacing 5 V TTL logic to 3.3 V or 2.5 V digital subsystems where voltage translation is required. IC Role / Device Role / Timing Role: Open-collector output pulled to target logic rail (e.g., 3.3 V) provides safe, unidirectional level shift. Use Value: Avoids back-powering or latch-up risks associated with direct 5 V–3.3 V connections; no additional ICs needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LS05N | Dual-in-line package (14-pin PDIP); same electrical specs, higher thermal resistance, through-hole mounting. | Suitable for prototyping, breadboarding, or legacy through-hole PCBs; not for surface-mount production. | Select SN74LS05N when manual assembly, socketing, or legacy board rework is required. |
| SN74LS05D | SOIC-14 package (Case 751A); identical logic and DC/AC specs, slightly different leadform and moisture sensitivity level. | Compatible with standard SOIC reflow profiles; widely stocked in tape-and-reel for automated SMT lines. | Choose SN74LS05D for high-volume SMT manufacturing where SOEIAJ footprint is not mandated. |
Compared with SN74LS05N and SN74LS05D, the SN74LS05M offers identical logic function and electrical performance but uses the SOEIAJ-14 package-optimized for Japanese industrial equipment standards, tighter lead pitch tolerance, and specific JEDEC-compliant reflow behavior.
Availability
SN74LS05M is available at Aetrix Electronics and suitable for industrial bus arbitration, LED status indication, legacy system address decoding, and level translation interface applications requiring stable component supply and long-term obsolescence management.
Supply support for SN74LS05M includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power and signal management solutions for automotive, industrial, and cloud infrastructure markets.
The SN74LS05M belongs to the classic 74LS logic family, engineered for backward compatibility with legacy TTL systems while delivering improved speed-power trade-offs for cost-sensitive industrial control and instrumentation designs.
FAQ
What is the maximum output sink current guaranteed for SN74LS05M?
The SN74LS05M guarantees a minimum output sink current (IOL) of 8.0 mA per channel at VCC = 4.75 V and VOL ≤ 0.5 V. This rating is validated across the full 0–70°C operating temperature range and ensures reliable driving of standard TTL loads, LEDs, or small-signal transistors without external amplification.
Does SN74LS05M have push-pull or open-collector outputs?
SN74LS05M features open-collector outputs exclusively-no internal pull-up resistors. Each output consists of a single NPN transistor emitter-grounded, collector accessible externally. This architecture enables wired-OR logic, bus sharing, and flexible voltage-level interfacing when paired with appropriate external pull-up resistors.
What is the package type and lead count of SN74LS05M?
SN74LS05M uses the SOEIAJ-14 surface-mount package (Case 965), a 14-pin gull-wing outline conforming to EIAJ ED-7401B standards. It measures 8.55 × 3.80 mm with 1.27 mm pitch and is distinct from SOIC-14 (Case 751A) in lead thickness, coplanarity, and moisture sensitivity profile.
Can SN74LS05M be used as a level shifter between 5 V and 3.3 V logic?
Yes-SN74LS05M can serve as a unidirectional level shifter by connecting its open-collector output to a 3.3 V pull-up resistor. The input remains 5 V TTL-compatible (VIH ≥ 2.0 V), while the output HIGH level follows the pull-up rail. This avoids back-powering and ensures safe interfacing without additional components.
What are the absolute maximum ratings for SN74LS05M supply voltage?
The absolute maximum supply voltage for SN74LS05M is 7.0 V, though operation above 5.25 V violates the guaranteed operating range. Exceeding 5.25 V risks increased power dissipation, accelerated parametric drift, and potential long-term reliability degradation-even if functional temporarily.
SN74LS05M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Features:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -
- Input Logic Level - Low:
- -
- Input Logic Level - High:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74LS05M FAQ
1.How can I place an order for SN74LS05M through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LS05M on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74LS05M reliable?
The price and inventory of SN74LS05M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LS05M is usually 5 days.
3.What payment methods are accepted for SN74LS05M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LS05M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LS05M?
SN74LS05M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LS05M order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74LS05M?
For technical support, including SN74LS05M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LS05M requirements.
6.How does Aetrix verify that SN74LS05M is sourced from the original manufacturer or authorized distributors?
All SN74LS05M products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74LS05M meets industry standards.
7.What is the process for return or replacement of SN74LS05M?
All SN74LS05M units undergo pre-shipment inspection (PSI). If there is an issue with SN74LS05M, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN74LS05M part is unused and in its original packaging.
Return procedure for SN74LS05M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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