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Nexperia USA Inc. 74HC241DB,118
- Part No.:
- 74HC241DB,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HC241DB,118.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,706
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Product details
Overview
74HC241DB,118 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 2.0 V to 6.0 V supply. It functions as two 4-bit buffers or one 8-bit buffer, features CMOS-level inputs, and supports industrial temperature range (−40 °C to +125 °C) in SO20 package. Used for bidirectional bus interfacing in microcontroller peripheral expansion and memory address/data isolation.
For engineers reviewing the 74HC241DB,118 datasheet, 74HC241DB,118 pinout, 74HC241DB,118 application, or 74HC241DB,118 equivalent, key selection criteria include dual 4-bit enable control timing, 3-state output leakage (<±5 μA at VCC = 6.0 V), propagation delay (7 ns typ. at VCC = 6.0 V), and SO20 thermal derating (12.3 mW/K above 109 °C).
Technical Context
The device implements two independent 4-bit buffered paths: inputs 1A0–1A3 drive outputs 1Y0–1Y3 under control of 1OE (active LOW), while 2A0–2A3 drive 2Y0–2Y3 under 2OE (active HIGH). Each path exhibits non-inverting logic and high-impedance OFF-state when its enable is inactive.
Input clamp diodes allow safe interface to voltages exceeding VCC using external current-limiting resistors. The 74HC variant maintains CMOS input thresholds (VIH ≥ 3.15 V at VCC = 4.5 V), ensuring compatibility with 3.3 V and 5 V logic families without level translation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Supports mixed-voltage system interfacing including 3.3 V and 5 V domains. |
| Propagation Delay (tpd) | 7 ns (typ.) at VCC = 6.0 V - Enables high-speed data buffering in 20 MHz+ digital buses. |
| Output Drive Strength | ±7.8 mA (IOH/IOL) at VCC = 4.5 V - Sufficient to drive 15 pF loads with <30 ns transition time. |
| OFF-State Output Leakage | ±5.0 μA max at −40 °C to +125 °C - Ensures minimal bus contention during 3-state hold. |
| Input Thresholds (74HC) | VIH = 3.15 V, VIL = 1.35 V at VCC = 4.5 V - Matches standard CMOS logic levels for reliable signal recognition. |
| Power Dissipation Capacitance | 30 pF per buffer - Used to calculate dynamic power: PD = CPD × VCC² × fi × N. |
| Operating Temperature | −40 °C to +125 °C - Qualified for extended industrial and automotive-adjacent environments. |
Pinout & Package
74HC241DB,118 is supplied in SO20 (SOT163-1) plastic small outline package, 20-pin, 7.5 mm body width, with gull-wing leads and pin 1 index marker.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE (pin 1), 2OE (pin 19) | Independent 3-state enables: 1OE active LOW controls Y0–Y3; 2OE active HIGH controls Y0–Y3 of second group. |
| 2, 4, 6, 8 17, 15, 13, 11 | 1A0–1A3, 2A0–2A3 | Two sets of four buffered inputs - allows partitioned bus control or dual 4-bit channel operation. |
| 12, 14, 16, 18 3, 5, 7, 9 | 1Y0–1Y3, 2Y0–2Y3 | Non-inverting 3-state outputs - each set isolated by its own enable; no internal bus contention. |
| 10, 20 | GND, VCC | Single ground and supply rail - decoupling required near pin 20 to minimize switching noise on shared VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 4-bit enables | Enables selective activation of two 4-bit data paths without external gating logic. |
| Input clamp diodes | Permits overvoltage-tolerant input interface (e.g., 5 V signals into 3.3 V system) with series resistor. |
| High noise immunity | CMOS input structure provides >40 % VCC noise margin at VCC = 4.5 V, reducing false triggering. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up under transient stress. |
| ESD protection | HBM >2000 V, CDM >1000 V - meets IEC 61000-4-2 system-level robustness requirements. |
Applications
| Microcontroller Bus Expansion | Memory Address/Data Isolation |
|---|---|
Use Scenario: Expanding GPIO count of an ARM Cortex-M4 MCU to drive multiple peripheral address lines. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer isolating MCU port pins from parallel bus segments; dual OE permits time-multiplexed access. Use Value: Eliminates need for discrete transistors or complex CPLD logic; 7 ns tpd ensures timing closure at 25 MHz bus clock. | Use Scenario: Separating SRAM address bus from FPGA configuration bus in a hybrid controller design. IC Role / Device Role / Timing Role: Bidirectional bus driver enabling clean address/data handoff between memory and programmable logic domains. Use Value: Prevents back-driving during FPGA reconfiguration; ±7.8 mA drive sustains signal integrity across 10 cm PCB traces. |
| Industrial I/O Module Interface | Digital Signal Routing in Test Equipment |
Use Scenario: Level-shifting and buffering digital I/O signals between 24 V PLC logic and 3.3 V microcontroller. IC Role / Device Role / Timing Role: Input protection via clamp diodes + current-limiting resistors; 3-state outputs prevent bus conflicts during hot-swap events. Use Value: Enables direct 5 V-tolerant interface without external level shifters; −40 °C to +125 °C rating supports uncooled enclosures. | Use Scenario: Routing multiple DUT test signals through a PXI-based ATE platform with dynamic path selection. IC Role / Device Role / Timing Role: Signal fan-out and path enable/disable via independent OE pins; low CPD minimizes switching-induced crosstalk. Use Value: 30 pF CPD limits dynamic power to <1.5 mW per buffer at 10 MHz, reducing thermal load in dense test card layouts. |
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 |
|---|---|---|---|
| 74HC244D,653 | Octal non-inverting buffer with single active-LOW OE (no dual-OE architecture) | Lacks independent 4-bit group control; requires external logic for split-bus enable sequencing | Select when unified enable suffices and board space favors identical pinout (SO20). |
| SN74LVC244APWR | 3.3 V only (1.65–3.6 V), TTL-compatible inputs, lower VOH (2.4 V min @ 3.3 V) | Not suitable for 5 V systems; higher speed (3.5 ns tpd) but narrower voltage margin | Prefer for 3.3 V-only designs requiring faster edge rates and lower static current (<1 μA ICC). |
Compared with 74HC241DB,118, the 74HC244D,653 simplifies enable logic but sacrifices flexible bus segmentation, while the SN74LVC244APWR delivers superior speed and lower power at 3.3 V but cannot operate at 5 V or support extended temperature ranges.
Availability
74HC241DB,118 is available at Aetrix Electronics and suitable for microcontroller bus expansion, memory address/data isolation, and industrial I/O module interface requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for 74HC241DB,118 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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer electronics.
The 74HC logic family targets general-purpose digital interfacing with emphasis on wide supply range, robust ESD tolerance, and industrial temperature capability - designed specifically for bus buffering, signal routing, and level-adapted I/O expansion.
FAQ
What is the function of pin 19 (2OE) versus pin 1 (1OE) on the 74HC241DB,118?
Pin 1 (1OE) is an active-LOW enable controlling outputs 1Y0–1Y3; pin 19 (2OE) is an active-HIGH enable controlling outputs 2Y0–2Y3. This dual-enable architecture allows independent activation of two 4-bit data groups - for example, enabling one group during address phase and the other during data phase without external logic.
Can the 74HC241DB,118 interface 5 V signals into a 3.3 V system?
Yes - input clamp diodes permit safe interface to voltages exceeding VCC when used with external current-limiting resistors. For 5 V inputs into a 3.3 V-powered device, a 1 kΩ series resistor limits input current to <20 mA, keeping VI within absolute maximum ratings and avoiding damage.
How does thermal derating apply to the 74HC241DB,118 in SO20 package?
The SO20 (SOT163-1) package has a total power dissipation limit of 500 mW at ≤109 °C; above that, Ptot derates linearly at 12.3 mW/K. At 125 °C ambient, maximum allowable power drops to ~480 mW - requiring careful layout with thermal vias and copper pour to maintain junction temperature below 150 °C.
Is the 74HC241DB,118 pin-compatible with the 74HCT241DB,118?
Yes - both share identical SO20 pinout, pin functions, and mechanical footprint. The key difference is input threshold: 74HC241DB,118 uses CMOS-level inputs (VIH ≈ 0.7×VCC), while 74HCT241DB,118 uses TTL-compatible inputs (VIH = 2.0 V min). Electrical substitution is possible only if driving logic matches the respective input voltage requirements.
74HC241DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SSOP
74HC241DB,118 FAQ
1.How can I place an order for 74HC241DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC241DB,118 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 74HC241DB,118 reliable?
The price and inventory of 74HC241DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC241DB,118 is usually 5 days.
3.What payment methods are accepted for 74HC241DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC241DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC241DB,118?
74HC241DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC241DB,118 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 74HC241DB,118?
For technical support, including 74HC241DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC241DB,118 requirements.
6.How does Aetrix verify that 74HC241DB,118 is sourced from the original manufacturer or authorized distributors?
All 74HC241DB,118 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 74HC241DB,118 meets industry standards.
7.What is the process for return or replacement of 74HC241DB,118?
All 74HC241DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC241DB,118, 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 74HC241DB,118 part is unused and in its original packaging.
Return procedure for 74HC241DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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