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NXP Semiconductors 74HCT241N,652
- Part No.:
- 74HCT241N,652
- Manufacturer:
- NXP Semiconductors
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
74HCT241N,652.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,071
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Product details
Overview
74HCT241N,652 from Nexperia is an octal non-inverting 3-state buffer/line driver with dual independent output enables (1OE active LOW, 2OE active HIGH), operating at 4.5 V to 5.5 V supply voltage, delivering ±6 mA output drive, and supporting −40 °C to +125 °C industrial temperature range - used for bidirectional bus interfacing in microcontroller peripheral expansion and memory address/data buffering.
For engineers reviewing the 74HCT241N,652 datasheet, 74HCT241N,652 pinout, 74HCT241N,652 application, or 74HCT241N,652 equivalent, key selection criteria include TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max), propagation delay of 11 ns typical at 5 V/15 pF, 3-state enable/disable timing (ten = 15 ns, tdis = 18 ns), and SO20 (SOT163-1) package compatibility with legacy 74-series layouts.
Technical Context
The 74HCT241N,652 implements two independent 4-bit non-inverting buffer sections, each controlled by a dedicated 3-state enable: 1OE (pin 1, active LOW) governs outputs 1Y0–1Y3 (pins 12,14,16,18), while 2OE (pin 19, active HIGH) controls 2Y0–2Y3 (pins 3,5,7,9). Inputs feature clamp diodes enabling safe interface to voltages exceeding VCC when current-limiting resistors are used.
Its TTL-level input compatibility (VIH ≤ 2.0 V, VIL ≥ 0.8 V at VCC = 4.5–5.5 V) ensures direct connection to legacy 5 V TTL logic without level-shifting, while CMOS output structure provides rail-to-rail swing and high noise immunity (typical HNM = 0.9 V at VCC = 5 V). Static current consumption remains below 160 μA over full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - matches standard 5 V TTL systems; avoids undervoltage lockout or overvoltage stress |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - guarantees reliable recognition of TTL logic levels without external biasing |
| Output Drive | ±6 mA at VCC = 4.5 V - sufficient to drive 10 LSTTL loads or 15 pF capacitive bus lines |
| Propagation Delay | 11 ns typical (VCC = 5.0 V, CL = 15 pF) - supports 30+ MHz bus toggle rates in synchronous interfaces |
| Enable Timing | ten = 15 ns max, tdis = 18 ns max - ensures clean bus arbitration with minimal glitch window during state transitions |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive control modules and industrial PLC backplanes |
| ESD Robustness | HBM > 2000 V, CDM > 1000 V - withstands handling and board-level ESD events without latch-up or parameter shift |
Pinout & Package
74HCT241N,652 is supplied in SO20 plastic small outline package (SOT163-1), 20-pin, 7.5 mm body width, 1.27 mm pitch - compatible with standard 0.3" wide DIP socket footprints and automated SMT placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OE | Active-LOW enable for outputs 1Y0–1Y3; pulled HIGH disables group, pulled LOW enables |
| 2 | 1A0 | Data input for 1Y0; non-inverted path to pin 12 |
| 4 | 1A1 | Data input for 1Y1; non-inverted path to pin 14 |
| 6 | 1A2 | Data input for 1Y2; non-inverted path to pin 16 |
| 8 | 1A3 | Data input for 1Y3; non-inverted path to pin 18 |
| 10 | GND | Ground reference (0 V); must be low-impedance connection to minimize switching noise |
| 12 | 1Y0 | Non-inverting buffered output driven by 1A0; high-impedance when 1OE = HIGH |
| 14 | 1Y1 | Non-inverting buffered output driven by 1A1; high-impedance when 1OE = HIGH |
| 16 | 1Y2 | Non-inverting buffered output driven by 1A2; high-impedance when 1OE = HIGH |
| 18 | 1Y3 | Non-inverting buffered output driven by 1A3; high-impedance when 1OE = HIGH |
| 19 | 2OE | Active-HIGH enable for outputs 2Y0–2Y3; pulled LOW disables group, pulled HIGH enables |
| 17 | 2A0 | Data input for 2Y0; non-inverted path to pin 3 |
| 15 | 2A1 | Data input for 2Y1; non-inverted path to pin 5 |
| 13 | 2A2 | Data input for 2Y2; non-inverted path to pin 7 |
| 11 | 2A3 | Data input for 2Y3; non-inverted path to pin 9 |
| 3 | 2Y0 | Non-inverting buffered output driven by 2A0; high-impedance when 2OE = LOW |
| 5 | 2Y1 | Non-inverting buffered output driven by 2A1; high-impedance when 2OE = LOW |
| 7 | 2Y2 | Non-inverting buffered output driven by 2A2; high-impedance when 2OE = LOW |
| 9 | 2Y3 | Non-inverting buffered output driven by 2A3; high-impedance when 2OE = LOW |
| 20 | VCC | Positive supply (4.5–5.5 V); requires local 100 nF ceramic decoupling adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Accepts standard 5 V TTL logic levels directly - eliminates need for external level translators in mixed-logic systems |
| Dual independent 3-state control | Separate 1OE (active LOW) and 2OE (active HIGH) enables allow asymmetric bus arbitration and partial bus isolation |
| Input clamp diodes | Enable safe interface to signals up to VCC + 0.5 V using series current-limiting resistors - protects against overvoltage on data lines |
| High noise immunity | Typical high-level noise margin > 0.9 V at VCC = 5 V - suppresses false triggering in electrically noisy industrial environments |
| JEDEC-compliant packaging | SOT163-1 (SO20) footprint meets JEDEC MS-013 standards - ensures mechanical compatibility with legacy 74-series PCB layouts |
Applications
| Microcontroller Bus Expansion | Memory Address Buffering |
|---|---|
Use Scenario: Expanding GPIO count of an ARM Cortex-M0+ MCU to drive 8-bit parallel LCD controller and keypad matrix. IC Role / Device Role: Bidirectional 3-state buffer isolating MCU port pins from shared data bus segments. Use Value: Enables time-multiplexed access to multiple peripherals using single 8-bit port, reducing MCU pin count and PCB routing complexity. |
Use Scenario: Driving 8-bit address lines from FPGA to dual-port SRAM in embedded instrumentation system. IC Role / Device Role: Unidirectional address line driver providing fanout and noise filtering between FPGA and memory. Use Value: Maintains signal integrity across 10 cm trace lengths at 25 MHz, preventing address skew and read/write errors. |
| Industrial I/O Module Backplane | Legacy System Interface Adapter |
Use Scenario: Isolating field I/O signals (24 V digital inputs) from 5 V logic side in programmable logic controller rack. IC Role / Device Role: Level-translated buffer stage converting opto-isolator outputs to clean 5 V CMOS logic levels. Use Value: Provides galvanic isolation interface with <10 ns propagation skew between channels, ensuring deterministic scan cycle timing. |
Use Scenario: Interfacing vintage Z80 CPU-based terminal to modern USB-to-serial adapter via parallel printer port emulation. IC Role / Device Role: 3-state bus transceiver translating TTL-level parallel data between Z80 and USB bridge IC. Use Value: Supports bidirectional handshaking (BUSY/ACK) with sub-20 ns enable/disable timing, eliminating protocol timeouts. |
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 | TI part; identical pinout, same TTL input thresholds and 5 V operation; propagation delay 13 ns typical (vs. 11 ns) | Valid drop-in replacement where 2 ns timing margin is acceptable; same SO20 package and thermal profile | Select SN74HCT241N only if TI-sourced supply chain or dual-sourcing strategy is required; verify layout compatibility with TI's SO20 land pattern. |
| 74HCT240N,652 | Nexperia inverting variant; same pinout and specs but outputs inverted (1Yn = NOT 1An); 1OE/2OE logic unchanged | Requires logic inversion in upstream firmware or gate-level design; unsuitable for non-inverting data paths without redesign | Choose 74HCT240N,652 only when signal polarity inversion is intentionally required - e.g., active-LOW enable signaling or complementary bus driving. |
Compared with SN74HCT241N and 74HCT240N,652, the 74HCT241N,652 offers the fastest propagation delay (11 ns) among pin-compatible octal buffers and is the only non-inverting option in Nexperia's SO20-packaged HCT family, making it optimal for timing-critical data path extensions.
Availability
74HCT241N,652 is available at Aetrix Electronics and suitable for microcontroller bus expansion, memory address buffering, and industrial I/O module backplane designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT241N,652 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 discrete components optimized for reliability and energy efficiency.
The 74HCT241N,652 belongs to Nexperia's 74HCT logic family - engineered for seamless TTL-to-CMOS interfacing in industrial, automotive, and computing applications demanding robust operation across −40 °C to +125 °C.
FAQ
What is the maximum supply voltage rating for the 74HCT241N,652?
The 74HCT241N,652 has an absolute maximum supply voltage (VCC) of +7.0 V per its limiting values table, but the recommended operating range is strictly 4.5 V to 5.5 V. Operating above 5.5 V risks violating input/output voltage limits and may cause accelerated parametric drift or latent failure; sustained use beyond 5.5 V voids warranty and violates JEDEC JESD7A compliance.
Does the 74HCT241N,652 support operation at 3.3 V supply?
No, the 74HCT241N,652 is not specified for 3.3 V operation. Its input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) and output drive characteristics are validated only within 4.5 V to 5.5 V. At 3.3 V, VIH exceeds 70% of VCC, causing unreliable HIGH recognition; use 74HC241N,652 instead for 2.0–6.0 V flexible supply operation.
How are the two output enable inputs (1OE and 2OE) logically configured on the 74HCT241N,652?
On the 74HCT241N,652, 1OE (pin 1) is active LOW - outputs 1Y0–1Y3 enter high-impedance state when 1OE = HIGH. 2OE (pin 19) is active HIGH - outputs 2Y0–2Y3 enter high-impedance state when 2OE = LOW. This asymmetry allows independent control of two 4-bit bus segments using complementary enable logic without external inverters.
Can the 74HCT241N,652 drive a 50 pF load at 25 MHz without signal degradation?
Yes, the 74HCT241N,652 maintains 11 ns typical propagation delay and <18 ns disable time into 50 pF loads per its dynamic characteristics table. With 6 mA drive strength and 3.5 pF input capacitance, it delivers clean edges (tt < 12 ns) and settles within 1.5 UI at 25 MHz, provided VCC = 5.0 V, CL = 50 pF, and proper PCB layout (short traces, ground plane, local decoupling).
Is the 74HCT241N,652 qualified for automotive applications?
The 74HCT241N,652 is rated for −40 °C to +125 °C operation and meets JEDEC JESD7A, but it is not AEC-Q100 qualified. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products like the 74HCT241N,652 are not tested to automotive reliability standards and carry no warranty for use in safety-critical vehicle systems.
74HCT241N,652 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HCT
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- 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:
- Through Hole
- Supplier Device Package:
- 20-DIP
74HCT241N,652 FAQ
1.How can I place an order for 74HCT241N,652 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT241N,652 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 74HCT241N,652 reliable?
The price and inventory of 74HCT241N,652 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT241N,652 is usually 5 days.
3.What payment methods are accepted for 74HCT241N,652?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT241N,652 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT241N,652?
74HCT241N,652 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT241N,652 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 74HCT241N,652?
For technical support, including 74HCT241N,652 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT241N,652 requirements.
6.How does Aetrix verify that 74HCT241N,652 is sourced from the original manufacturer or authorized distributors?
All 74HCT241N,652 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 74HCT241N,652 meets industry standards.
7.What is the process for return or replacement of 74HCT241N,652?
All 74HCT241N,652 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT241N,652, 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 74HCT241N,652 part is unused and in its original packaging.
Return procedure for 74HCT241N,652:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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