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Renesas 74LS241P-E
- Part No.:
- 74LS241P-E
- Manufacturer:
- Renesas
- Package:
- -
- Datasheet:
-
74LS241P-E.pdf
- Description:
- OCTAL BUFFERS / LINE DRIVERS
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
74LS241P-E from Renesas Electronics is an octal non-inverting 3-state buffer/line driver with dual enable inputs, operating at 5 V supply, supporting ±15 mA high-level and 24 mA low-level output drive, and featuring 12–18 ns propagation delay - used in bus interface and data routing applications within TTL-based industrial control systems.
For engineers reviewing the 74LS241P-E datasheet, 74LS241P-E pinout, 74LS241P-E application, or 74LS241P-E equivalent, key selection criteria include dual-gated 3-state control timing (tZH/tLZ ≤25 ns), guaranteed operation from –20°C to +75°C, and DIP-20 package compatibility with legacy board layouts.
Technical Context
The 74LS241P-E implements two independent 4-bit non-inverting buffer sections, each controlled by separate active-low enable pins (1G and 2G), allowing selective bus isolation. Its 3-state outputs support bidirectional data flow when paired with complementary receivers in shared-bus architectures.
Designed for TTL-compatible logic families, it meets standard LS input thresholds (VIH ≥2.0 V, VIL ≤0.8 V) and drives standard TTL loads with VOH ≥2.4 V (IOH = –3 mA) and VOL ≤0.5 V (IOL = 24 mA), while maintaining ICC ≤54 mA under full output disable conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.75–5.25 V - ensures stable operation across standard TTL power rails with ±5% tolerance. |
| Propagation Delay | 12–18 ns - enables reliable timing in 20–30 MHz bus cycles with margin for setup/hold. |
| Output Drive | –15 mA (IOH), 24 mA (IOL) - sufficient to drive 10 standard TTL loads per output. |
| 3-State Enable Time | tZH ≤23 ns, tLZ ≤25 ns - supports fast bus arbitration and dynamic line sharing. |
| Operating Temperature | –20°C to +75°C - qualified for industrial-grade embedded control environments. |
| Input Thresholds | VIH ≥2.0 V, VIL ≤0.8 V - guarantees interoperability with 74LS, 74ALS, and 74F series logic. |
| Off-State Leakage | ±20 µA - minimizes bus contention current during high-impedance state. |
Pinout & Package
Dual-in-line plastic package (DIP-20), 2.54 mm pitch, 6.3 mm body width × 24.5 mm length, with Ni/Pd/Au-plated leads and JEDEC-standard pinout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1G, 2G | Active-low output enable | Independent gating of Y1–Y4 and Y1'–Y4'; both must be low for output drive. |
| A1–A4, A1'–A4' | Non-inverting data inputs | Eight buffered inputs mapped 1:1 to corresponding outputs; no inversion. |
| Y1–Y4, Y1'–Y4' | 3-state buffered outputs | High-drive, tri-state outputs; high-impedance when respective G is high. |
| VCC (Pin 20), GND (Pin 10) | Power supply terminals | Single 5 V supply; decoupling required near VCC/GND pair for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit enables | Allows partitioned bus control - e.g., isolate address vs. data lanes without external logic. |
| Guaranteed 3-state isolation | IOZH/IOZL ≤ ±20 µA ensures minimal leakage during high-Z, critical for multi-driver buses. |
| TTL-compatible input/output levels | Direct drop-in replacement for 74LS240/241 in legacy designs without level-shifting. |
| Industrial temperature range | Validated operation from –20°C to +75°C supports deployment in factory automation hardware. |
Applications
| Industrial Bus Interface | Data Acquisition Front-End |
|---|---|
Use Scenario: Isolating microcontroller address/data buses from peripheral memory or I/O expanders in PLC backplanes. IC Role / Device Role / Timing Role: Bidirectional 3-state buffer enabling time-multiplexed bus sharing between CPU and multiple peripherals. Use Value: Prevents bus contention during idle cycles via precise enable timing (tZH/tLZ ≤25 ns) and supports up to 10 TTL loads per line. | Use Scenario: Driving analog-to-digital converter (ADC) parallel output lines to a microcontroller in noisy industrial sensor nodes. IC Role / Device Role / Timing Role: Signal conditioning and fanout amplification for ADC data bus, with noise-immune 3-state hold during conversion. Use Value: Ensures clean data capture by isolating ADC outputs during sampling phase using independent 1G/2G control. |
| Legacy System Upgrade | Test Equipment Signal Routing |
Use Scenario: Replacing obsolete 74LS240 in aging test fixtures requiring pin-compatible buffering with identical timing. IC Role / Device Role / Timing Role: Pin-identical functional replacement delivering same propagation delay (12–18 ns) and drive strength. Use Value: Eliminates redesign effort - same PCB footprint, same timing margins, same thermal profile (ICC ≤54 mA). | Use Scenario: Multiplexing stimulus signals from multiple function generators to a single DUT input in automated test systems. IC Role / Device Role / Timing Role: Selectively enabling/disabling signal paths using 1G/2G to route one of two 4-bit sources. Use Value: Enables deterministic path selection with sub-30 ns enable/disable transitions and <0.5 V VOL for logic-level fidelity. |
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 |
|---|---|---|---|
| SN74LS241N | Same logic function, identical pinout, TI-manufactured; tPLH/tPHL max 25 ns (vs. 18 ns for 74LS241P-E). | Slightly slower switching limits use in >25 MHz bus cycles; otherwise direct substitution. | Select SN74LS241N only if TI-sourced parts are mandated by supply chain policy. |
| 74LS240N | Inverting output polarity; all eight outputs inverted vs. non-inverting in 74LS241P-E. | Requires logic inversion in upstream/downstream circuitry - not drop-in compatible. | Choose 74LS240N only when system design explicitly requires inverted buffering. |
Compared with SN74LS241N and 74LS240N, the 74LS241P-E offers tighter propagation delay (18 ns max), non-inverting behavior, and Renesas' industrial temperature validation - making it optimal for timing-critical, legacy-compatible bus interfaces where signal polarity integrity is essential.
Availability
74LS241P-E is available at Aetrix Electronics and suitable for industrial bus interface, data acquisition front-end, legacy system upgrade, and test equipment signal routing applications requiring stable component supply and long-term obsolescence management.
Supply support for 74LS241P-E 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
Renesas Electronics is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, and legacy logic solutions for industrial, automotive, and infrastructure markets.
The HD74LS241 product line delivers TTL-compatible octal buffers targeting backward-compatible upgrades and robust bus interfacing in industrial control hardware.
FAQ
What is the logic function of the 74LS241P-E?
The 74LS241P-E is an octal non-inverting 3-state buffer with dual active-low enable inputs (1G and 2G). It passes A1–A4 and A1'–A4' to corresponding Y outputs unchanged when their respective enable is low; outputs enter high-impedance state when either enable is high. This function is confirmed in the official Renesas HD74LS241 datasheet Rev.2.00.
Does the 74LS241P-E support 3.3 V operation?
No, the 74LS241P-E is specified only for 4.75–5.25 V operation per its Recommended Operating Conditions table. It is not 3.3 V tolerant - applying 3.3 V to VCC will result in undefined logic behavior and potential failure. The 74LS241P-E requires a regulated 5 V supply to meet VIH/VIL thresholds and output drive specs.
What is the maximum output current capability of the 74LS241P-E?
The 74LS241P-E supports –15 mA (high-level) and 24 mA (low-level) output current per pin, as specified in the Electrical Characteristics table under IOH and IOL. These values are guaranteed across –20°C to +75°C and ensure reliable driving of up to 10 standard TTL loads per output without exceeding VOL ≤0.5 V or VOH ≥2.0 V.
Is the 74LS241P-E pin-compatible with the 74LS240?
No - although both are octal 3-state buffers in 20-pin DIP packages, the 74LS240 has inverting outputs while the 74LS241P-E is non-inverting. Their pinouts differ: 74LS240 uses complementary output labeling (e.g., Y1̅), and internal logic inversion means direct substitution would invert all data. The 74LS241P-E pin mapping matches only non-inverting variants like SN74LS241N.
What is the thermal performance of the 74LS241P-E in continuous operation?
The 74LS241P-E has a maximum power dissipation of 400 mW (Absolute Maximum Ratings) and typical ICC of 32–54 mA when all outputs are disabled. At full drive, junction temperature rise depends on PCB copper area and ambient; Renesas specifies storage temperature from –65°C to +150°C, but operational limits remain –20°C to +75°C per datasheet.
74LS241P-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- 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:
- -
74LS241P-E FAQ
1.How can I place an order for 74LS241P-E through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LS241P-E 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 74LS241P-E reliable?
The price and inventory of 74LS241P-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LS241P-E is usually 5 days.
3.What payment methods are accepted for 74LS241P-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LS241P-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LS241P-E?
74LS241P-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LS241P-E 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 74LS241P-E?
For technical support, including 74LS241P-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LS241P-E requirements.
6.How does Aetrix verify that 74LS241P-E is sourced from the original manufacturer or authorized distributors?
All 74LS241P-E 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 74LS241P-E meets industry standards.
7.What is the process for return or replacement of 74LS241P-E?
All 74LS241P-E units undergo pre-shipment inspection (PSI). If there is an issue with 74LS241P-E, 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 74LS241P-E part is unused and in its original packaging.
Return procedure for 74LS241P-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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