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Texas Instruments SN74ALS241C-1N
- Part No.:
- SN74ALS241C-1N
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN74ALS241C-1N.pdf
- Description:
- BUS DRIVER, ALS SERIES
- Quantity:
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Inventory:4,701
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Product details
Overview
SN74ALS241C-1N from Texas Instruments is an octal 3-state noninverting buffer/driver IC designed for memory address and bus driving applications. It features dual independent 3-state enable inputs (1OE, 2OE), pnp input structure reducing DC loading, 48 mA low-level output current (IOL) capability per channel, and operation across 0°C to 70°C. It drives TTL-compatible bus lines in industrial control backplanes.
For engineers reviewing the SN74ALS241C-1N datasheet, SN74ALS241C-1N pinout, SN74ALS241C-1N application, or SN74ALS241C-1N equivalent, key selection criteria include guaranteed 48 mA sink drive strength, dual active-low 3-state enables, 5 V supply compatibility, and PDIP-20 packaging with through-hole mounting for legacy board designs.
Technical Context
This device implements two independent 4-bit noninverting buffer groups (1A1–1A4 → 1Y1–1Y4 and 2A1–2A4 → 2Y1–2Y4), each controlled by its own active-low 3-state enable (1OE, 2OE). The pnp input stage minimizes input current draw, improving fan-in in dense address decoding systems.
Propagation delays are specified at 2–11 ns (tPLH/tPHL) and enable/disable times range from 1–21 ns (tPZH/tPLZ), supporting reliable operation in 20–30 MHz bus environments. All outputs meet ALS logic thresholds (VIH = 2 V, VIL = 0.8 V) and drive standard TTL loads with VOH ≥ 2.4 V and VOL ≤ 0.4 V at IOL = 48 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 4.5 V to 5.5 V - compatible with standard 5 V TTL/ALS logic rails without regulation overhead |
| IOL Output Sink | 48 mA per channel - supports direct drive of multiple TTL inputs or termination-resistor-loaded buses |
| VOH / VOL | ≥2.4 V @ −12 mA / ≤0.4 V @ 48 mA - ensures noise margin >0.4 V in mixed-technology systems |
| tPLH / tPHL | 2 ns min / 11 ns max - enables synchronous address latching in sub-100 ns memory cycles |
| Operating Temp | 0°C to 70°C - qualified for commercial-grade embedded control and instrumentation applications |
| Input Structure | pnp-based - reduces input current to ≤0.1 mA, minimizing loading on upstream address generators |
| 3-State Control | Dual independent OE inputs (1OE, 2OE) - allows selective isolation of two 4-bit data paths without external logic |
Pinout & Package
SN74ALS241C-1N uses a 20-pin plastic dual in-line package (PDIP-N), 300-mil width, with 0.1-inch lead pitch and through-hole mounting. Package height is 4.95 mm max; body dimensions are 24.33 mm × 6.35 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low 3-state enable inputs - independently disable Group 1 (pins 18,16,14,12) or Group 2 (pins 9,7,5,3) |
| 2, 4, 6, 8 | 1A1–1A4 | Noninverting input channels for first buffer group - accept TTL/ALS-compatible address or data signals |
| 3, 5, 7, 9 | 2Y1–2Y4 | Noninverting outputs for second buffer group - drive downstream bus segments or memory address lines |
| 12, 14, 16, 18 | 1Y1–1Y4 | Noninverting outputs for first buffer group - provide high-drive buffered copies of 1A1–1A4 when 1OE = L |
| 11, 20 | GND, VCC | Power reference and supply - decoupling capacitor required at VCC pin for stable switching performance |
| 13, 15, 17 | 2A1–2A4 | Noninverting input channels for second buffer group - electrically isolated from Group 1 except via shared VCC/GND |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state control | Enables selective bus segmentation - isolate memory address vs. peripheral I/O paths using separate OE pins |
| 48 mA output sink (−1 version) | Drives up to 20 standard TTL loads per output - eliminates need for external bus transceivers in mid-density systems |
| pnp input structure | Reduces input current to ≤100 µA - prevents loading-induced timing skew in fan-out-heavy address decode trees |
| ALS logic family compatibility | Meets VIH = 2.0 V / VIL = 0.8 V thresholds - interoperable with SN74ALS, SN74F, and legacy 74LS devices |
| PDIP-20 through-hole package | Supports manual prototyping, repair, and long-lifecycle industrial PCBs where surface-mount reliability concerns exist |
Applications
| Memory Address Buffering | Legacy Bus Transceiver Interface |
|---|---|
|
Use Scenario: Buffering 16-bit CPU address bus before routing to multiple memory modules in an industrial PLC backplane. IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing isolation and drive strength enhancement between MPU and parallel memory array. Use Value: 48 mA per output ensures clean signal edges across 15 cm traces loaded with 8× SRAM chips, eliminating reflection-induced setup violations. |
Use Scenario: Interfacing a microcontroller's GPIO port to a legacy 8-bit ISA-style expansion bus with TTL-level signaling. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional driver enabling safe read/write separation via OE-controlled direction gating. Use Value: Dual OE inputs allow synchronized enable/disable of upper/lower byte lanes during 16-bit transfers, preventing bus contention. |
| Industrial I/O Expansion | Test Equipment Signal Conditioning |
|
Use Scenario: Driving optoisolator inputs for 8-channel digital output module in factory automation controller. IC Role / Device Role / Timing Role: High-current buffer converting low-drive MCU outputs into robust 10 mA LED drive signals. Use Value: Guaranteed 48 mA sink per channel directly energizes series-connected LED+resistor strings without external transistor stages. |
Use Scenario: Level-shifting and buffering test pattern signals from FPGA-based ATE controller to DUT under test. IC Role / Device Role / Timing Role: Timing-critical signal repeater ensuring sub-12 ns propagation delay and <1 ns skew across 8 parallel channels. Use Value: Matched tPLH/tPHL (2–11 ns) and tight enable timing (tPZH/tPLZ ≤ 21 ns) preserve pattern integrity at 25 MHz test clock rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALS241CN | No "-1" suffix; rated for 24 mA IOL (not 48 mA) | Suitable only for lighter bus loads (<10 TTL units); not interchangeable where full 48 mA drive is required | Select SN74ALS241CN only if system load analysis confirms ≤24 mA per output suffices. |
| SN74AS241AN | AS family: faster (tPLH/tPHL ≤ 6.2 ns), higher IOL (64 mA), but higher ICC (up to 90 mA) | Better for high-speed timing-critical paths; requires tighter power delivery and thermal management | Choose SN74AS241AN when propagation delay <7 ns is mandatory and power budget allows +35 mA per device. |
Compared with SN74ALS241CN, SN74ALS241C-1N delivers double the output sink current for robust bus driving; versus SN74AS241AN, it trades 3 ns speed for 55% lower quiescent current and broader voltage margin tolerance.
Availability
SN74ALS241C-1N is available at Aetrix Electronics and suitable for industrial control backplanes, legacy test equipment upgrades, and factory automation I/O modules requiring stable component supply over extended production lifecycles.
Supply support for SN74ALS241C-1N 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
Texas Instruments is a global semiconductor leader founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74ALS241C-1N belongs to TI's legacy Advanced Low-Power Schottky (ALS) logic family, engineered for high-density, low-power bus interfacing in commercial-grade systems where reliability and long-term availability are critical.
FAQ
What is the maximum output sink current specification for SN74ALS241C-1N?
The SN74ALS241C-1N is characterized for a guaranteed 48 mA low-level output current (IOL) per channel when VCC is between 4.75 V and 5.25 V. This rating distinguishes it from the standard SN74ALS241CN (24 mA IOL) and enables direct drive of heavily loaded TTL buses without external amplification. The 48 mA value is confirmed in the "recommended operating conditions" table of the SDAS153E datasheet.
Does SN74ALS241C-1N support dual independent 3-state control?
Yes, SN74ALS241C-1N provides two separate active-low 3-state enable inputs: 1OE controls outputs 1Y1–1Y4, and 2OE controls outputs 2Y1–2Y4. This allows independent gating of two 4-bit data paths - for example, isolating upper and lower memory address bytes - without requiring additional logic gates or shared enable timing constraints.
What package type is used for SN74ALS241C-1N?
SN74ALS241C-1N uses a 20-pin plastic dual in-line package (PDIP-N), also referred to as a 300-mil DIP. It features through-hole leads with 0.1-inch spacing, 24.33 mm × 6.35 mm body dimensions, and is RoHS-compliant with NiPdAu lead finish. This package is optimized for manual assembly, prototyping, and long-lifecycle industrial PCBs.
Can SN74ALS241C-1N interface directly with standard TTL loads?
Yes, SN74ALS241C-1N is fully compatible with standard TTL logic levels: VOH ≥ 2.4 V at −12 mA and VOL ≤ 0.4 V at 48 mA meet or exceed TTL voltage thresholds. Its ALS input structure (VIH = 2.0 V, VIL = 0.8 V) also accepts TTL outputs directly. No level-shifting circuitry is required for interoperability with 74LS, 74F, or legacy 7400-series devices.
What is the operating temperature range for SN74ALS241C-1N?
SN74ALS241C-1N is characterized for commercial-grade operation from 0°C to 70°C ambient temperature. This range aligns with standard industrial control and instrumentation environments where airflow and enclosure design maintain moderate thermal conditions. It is not rated for extended temperature ranges like the military-spec SN54ALS241C (−55°C to 125°C).
SN74ALS241C-1N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74ALS241C-1N FAQ
1.How can I place an order for SN74ALS241C-1N through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ALS241C-1N 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 SN74ALS241C-1N reliable?
The price and inventory of SN74ALS241C-1N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALS241C-1N is usually 5 days.
3.What payment methods are accepted for SN74ALS241C-1N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALS241C-1N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74ALS241C-1N?
SN74ALS241C-1N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ALS241C-1N 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 SN74ALS241C-1N?
For technical support, including SN74ALS241C-1N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALS241C-1N requirements.
6.How does Aetrix verify that SN74ALS241C-1N is sourced from the original manufacturer or authorized distributors?
All SN74ALS241C-1N 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 SN74ALS241C-1N meets industry standards.
7.What is the process for return or replacement of SN74ALS241C-1N?
All SN74ALS241C-1N units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALS241C-1N, 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 SN74ALS241C-1N part is unused and in its original packaging.
Return procedure for SN74ALS241C-1N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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