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Nexperia USA Inc. 74HCT241DB,112
- Part No.:
- 74HCT241DB,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HCT241DB,112.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,927
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Product details
Overview
74HCT241DB,112 from Nexperia is an octal non-inverting 3-state buffer/line driver with dual independent output enables (1OE active LOW, 2OE active HIGH), operating from 4.5 V to 5.5 V, supporting TTL-level inputs and delivering ±6 mA output drive at VCC = 4.5 V, used in bidirectional bus interfacing and memory address/data isolation in industrial control systems.
For engineers reviewing the 74HCT241DB,112 datasheet, 74HCT241DB,112 pinout, 74HCT241DB,112 application, or 74HCT241DB,112 equivalent, key selection criteria include TTL-compatible input thresholds, dual 4-bit enable control, SO20 package thermal derating above 109 °C, and −40 °C to +125 °C operation for extended-temperature embedded designs.
Technical Context
The device implements two independent 4-bit buffered paths: inputs 1A0–1A3 feed outputs 1Y0–1Y3 under control of 1OE (active LOW), while 2A0–2A3 drive 2Y0–2Y3 via 2OE (active HIGH). Each output enters high-impedance state when its respective enable is inactive, enabling bus sharing without contention.
Input clamp diodes allow safe interface to voltages exceeding VCC when current-limiting resistors are used. The 74HCT variant uses reduced input threshold levels (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V) to ensure reliable logic-level translation from standard TTL sources.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL and mixed-voltage system rails |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - guarantees robust recognition of TTL logic levels |
| Output Drive | ±6 mA at VCC = 4.5 V - sufficient to drive 10 LSTTL loads or 15 pF capacitive bus lines |
| Propagation Delay | 13 ns typ (nAn → nYn, CL = 15 pF, VCC = 5 V) - supports 30+ MHz bus clocking in synchronous interfaces |
| Enable Timing | ten = 15 ns typ, tdis = 18 ns typ (VCC = 4.5 V) - enables fast bus arbitration and dynamic channel switching |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood, motor control, and industrial PLC environments |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - reduces risk of handling damage during PCB assembly |
Pinout & Package
74HCT241DB,112 is supplied in a plastic small outline package (SO20, SOT163-1) with 20 leads, 7.5 mm body width, and 1.27 mm lead pitch. Thermal derating begins at 109 °C (12.3 mW/K).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE (active LOW), 2OE (active HIGH) | Independent enables for Group 1 (1Y0–1Y3) and Group 2 (2Y0–2Y3) outputs |
| 2, 20 | VCC, GND | Single supply rail and reference ground - no separate I/O or analog supplies required |
| 2, 4, 6, 8 | 1A0–1A3 | Group 1 data inputs - non-inverted, CMOS/TTL compatible |
| 17, 15, 13, 11 | 2A0–2A3 | Group 2 data inputs - electrically isolated from Group 1, same logic behavior |
| 18, 16, 14, 12 | 1Y0–1Y3 | Group 1 3-state outputs - high-impedance when 1OE = HIGH |
| 3, 5, 7, 9 | 2Y0–2Y3 | Group 2 3-state outputs - high-impedance when 2OE = LOW |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit enables | Allows selective activation of either half-bus without affecting the other - critical for multi-peripheral address/data multiplexing |
| TTL-compatible input thresholds | Eliminates need for level-shifting circuitry when interfacing legacy 5 V TTL microcontrollers or FPGAs |
| Input clamp diodes | Permits safe connection of inputs to signals up to VCC + 0.5 V using external current-limiting resistors |
| High noise immunity | CMOS design with hysteresis-free inputs achieves >40 % noise margin at VCC = 5 V |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during transient overvoltage events |
Applications
| Industrial PLC Backplane Interface | Legacy Microcontroller Bus Expansion |
|---|---|
Use Scenario: Isolating CPU address/data bus from multiple I/O modules on a shared backplane. IC Role / Device Role / Timing Role: Bidirectional buffer controlling signal direction and timing alignment between master and slave peripherals. Use Value: Dual OE pins allow staggered enable sequencing to prevent bus contention during hot-swap module insertion. | Use Scenario: Extending the data/address bus of an 8051 or Z80-based controller to support additional RAM or peripheral ICs. IC Role / Device Role / Timing Role: Non-inverting line driver providing fanout and noise margin enhancement for long trace runs. Use Value: 13 ns propagation delay ensures setup/hold timing compliance at 20 MHz bus clocks with 15 pF loading. |
| Automated Test Equipment (ATE) Signal Routing | Programmable Logic Controller (PLC) Input Conditioning |
Use Scenario: Multiplexing test signals between DUT channels and measurement instruments in modular ATE racks. IC Role / Device Role / Timing Role: 3-state switch enabling dynamic reconfiguration of signal paths under FPGA control. Use Value: 18 ns disable time allows clean signal isolation before next channel activation, minimizing crosstalk. | Use Scenario: Buffering discrete 24 V DC sensor inputs into a 5 V logic domain within a DIN-rail mounted PLC module. IC Role / Device Role / Timing Role: Level-translating interface with input clamping for transient protection on field-side traces. Use Value: Integrated clamp diodes reduce external component count when paired with series current-limiting resistors. |
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 |
|---|---|---|---|
| SN74HCT241N | Dual OE architecture identical; SOIC-20 package; VIH/VIL thresholds match within 0.1 V | Same functional behavior but rated only to +85 °C ambient - unsuitable for extended-temperature deployments | Select if cost sensitivity outweighs temperature requirement and board layout permits SOIC footprint |
| 74LVC241APW | 3.3 V only (1.65–3.6 V); lower drive (±24 mA); 1.5 ns faster propagation at 3.3 V | Requires level shifters for 5 V systems; not drop-in for TTL-interfaced designs | Choose only for new 3.3 V-only designs where speed and low power supersede voltage compatibility |
Compared with SN74HCT241N and 74LVC241APW, the 74HCT241DB,112 uniquely combines full −40 °C to +125 °C operation, native TTL input compatibility, and SO20 thermal performance - making it the sole option for ruggedized 5 V industrial bus isolation without redesign.
Availability
74HCT241DB,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automated test equipment signal routing, and legacy microcontroller bus expansion requiring stable component supply across extended temperature ranges.
Supply support for 74HCT241DB,112 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions optimized for reliability and manufacturability.
The 74HCT series targets industrial and automotive-adjacent applications demanding TTL compatibility, wide temperature operation, and robust ESD/latch-up immunity - specifically engineered for bus interface stability in harsh environments.
FAQ
What is the maximum allowable supply voltage for continuous operation?
The absolute maximum supply voltage is +7 V, but recommended continuous operation is limited to 4.5 V to 5.5 V per JEDEC JESD8C. Exceeding 5.5 V risks violating static characteristics and may cause accelerated parametric drift or premature wear-out, especially at high temperature.
Can 1OE and 2OE be tied together for single-enable operation?
Yes - connecting 1OE and 2OE through an inverter (to reconcile active-LOW and active-HIGH polarities) or using external logic to generate complementary enables allows unified 8-bit control. Direct tying is invalid due to conflicting polarity; doing so forces one group permanently enabled or disabled.
Does this device support hot-swap or live-insertion on powered buses?
No - the 74HCT241DB,112 lacks powered-off protection or bus-fault tolerance. Input clamp diodes only protect against overvoltage relative to VCC/GND, not against back-driving from live bus lines. External series resistors and isolation FETs are required for true hot-swap capability.
How does the SO20 package's thermal derating affect power budgeting at 125 °C?
At 125 °C ambient, the SO20 package (SOT163-1) derates total power dissipation linearly at 12.3 mW/K above 109 °C. This reduces usable Ptot from 500 mW to approximately 295 mW - requiring careful summation of ICC (≤160 μA) and dynamic power (CPD × VCC² × f × N) to stay within limit.
74HCT241DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 6mA, 6mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
74HCT241DB,112 FAQ
1.How can I place an order for 74HCT241DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT241DB,112 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 74HCT241DB,112 reliable?
The price and inventory of 74HCT241DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT241DB,112 is usually 5 days.
3.What payment methods are accepted for 74HCT241DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT241DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT241DB,112?
74HCT241DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT241DB,112 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 74HCT241DB,112?
For technical support, including 74HCT241DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT241DB,112 requirements.
6.How does Aetrix verify that 74HCT241DB,112 is sourced from the original manufacturer or authorized distributors?
All 74HCT241DB,112 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 74HCT241DB,112 meets industry standards.
7.What is the process for return or replacement of 74HCT241DB,112?
All 74HCT241DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT241DB,112, 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 74HCT241DB,112 part is unused and in its original packaging.
Return procedure for 74HCT241DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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