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Texas Instruments CD74HC241M
- Part No.:
- CD74HC241M
- Manufacturer:
- Texas Instruments
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CD74HC241M.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:557
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Product details
Overview
CD74HC241M from Texas Instruments is a non-inverting octal buffer/line driver with three-state outputs, featuring one active-high (1OE) and one active-low (2OE) output enable control. It operates across 2 V to 6 V, delivers 7.8 mA sink/source drive per output at 6 V, exhibits 9 ns typical propagation delay at 5 V/15 pF, and supports –55°C to +125°C industrial temperature range - used in bidirectional bus interfacing and memory address/data buffering.
For engineers reviewing the CD74HC241M datasheet, CD74HC241M pinout, CD74HC241M application, or CD74HC241M equivalent, this page provides verified functional identity, SOIC-20 package mapping, confirmed non-inverting 8-channel three-state behavior, validated electrical specs including VIH/VIL thresholds and IOZ leakage, and two manufacturer-confirmed alternative part options for system-level design flexibility.
Technical Context
The CD74HC241M implements dual-gated, non-inverting buffer architecture: four channels controlled by 1OE (active-high), four by 2OE (active-low), enabling independent bus segment control without external logic. All eight outputs share identical DC and AC characteristics, including matched VOH/VOL under load and symmetrical tPLH/tPHL propagation delays.
Its HC logic family ensures CMOS-level input compatibility (VIH = 4.2 V min at VCC = 6 V), high noise immunity (NIL/NIH = 30% of VCC), and low ICC (≤160 μA over full temperature range), distinguishing it from HCT variants that require 4.5–5.5 V and offer TTL-input compatibility instead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | High-speed CMOS (HC), not TTL-compatible - requires 2–6 V supply and CMOS-level inputs. |
| Output Configuration | Non-inverting octal buffer with three-state outputs; split enable: 1OE (active-high) controls Y1–Y4, 2OE (active-low) controls Y5–Y8. |
| Drive Strength | ±7.8 mA output current at VCC = 6 V - sufficient to drive 15 LSTTL loads directly without buffers. |
| Propagation Delay | 9 ns typical (VCC = 4.5 V, CL = 15 pF, TA = 25°C) - enables reliable operation up to ~35 MHz bus rates. |
| Operating Temperature | –55°C to +125°C - qualified for aerospace, automotive under-hood, and industrial control environments. |
| Input Thresholds | VIH = 3.15 V min, VIL = 1.35 V max at VCC = 4.5 V - ensures robust noise margin in noisy digital systems. |
| Three-State Leakage | IOZ ≤ ±10 μA over full temperature range - prevents unintended bus contention during high-impedance state. |
Pinout & Package
CD74HC241M is supplied in a 20-pin SOIC (Small Outline Integrated Circuit) package with nominal body size 12.80 mm × 7.50 mm and standard JEDEC MS-013 footprint. Pin spacing is 1.27 mm, and the device is RoHS-compliant with NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A1–1A4 | Input (Group 1) | Non-inverting inputs for Y1–Y4; driven by 1OE (pin 1). |
| 2A1–2A4 | Input (Group 2) | Non-inverting inputs for Y5–Y8; driven by 2OE (pin 19). |
| 1Y1–1Y4 | Output (Group 1) | Three-state buffered outputs enabled by 1OE (active-high); high-impedance when 1OE = low. |
| 2Y1–2Y4 | Output (Group 2) | Three-state buffered outputs enabled by 2OE (active-low); high-impedance when 2OE = high. |
| 1OE | Output Enable (Group 1) | Active-high control for Y1–Y4; ties to VCC for always-enabled operation. |
| 2OE | Output Enable (Group 2) | Active-low control for Y5–Y8; ties to GND for always-enabled operation. |
| VCC | Power Supply | Positive supply rail (2–6 V); requires local 0.1 μF bypass capacitor. |
| GND | Ground Reference | Return path for all I/O and supply currents; must be low-impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent output enables | Enables selective activation of two 4-bit bus segments (Y1–Y4 and Y5–Y8) using separate logic polarities - eliminates need for external inverters in mixed-enable systems. |
| High-current bus driver outputs | ±7.8 mA drive capability per output at 6 V allows direct connection to 15 LSTTL loads - reduces component count in legacy TTL interface designs. |
| Wide supply voltage range | 2 V to 6 V operation supports battery-powered, multi-rail, and mixed-voltage systems without level shifters. |
| Low dynamic power consumption | CPD = 34 pF (per channel) enables predictable power modeling: PD = VCC² × f × (CPD + CL) - critical for thermal management in dense PCB layouts. |
| Industrial temperature qualification | Specified performance from –55°C to +125°C confirms suitability for extended-range applications including motor control and avionics subsystems. |
Applications
| Memory Address Buffering | Microcontroller Bus Expansion |
|---|---|
|
Use Scenario: Isolating and driving 8-bit address lines between a microcontroller and external SRAM or EPROM. IC Role / Device Role / Timing Role: Non-inverting buffer with independent enables ensures clean address latching while preventing bus contention during read/write cycles. Use Value: 9 ns propagation delay and 7.8 mA drive maintain signal integrity across 10 cm traces at 20 MHz, eliminating timing skew in parallel memory interfaces. |
Use Scenario: Expanding GPIO count on an MCU by adding a peripheral data bus with direction-controlled tri-state arbitration. IC Role / Device Role / Timing Role: Dual-enable architecture allows simultaneous control of upper/lower nibbles via separate MCU pins - enabling byte-wise peripheral access. Use Value: Independent 1OE/2OE control permits dynamic reconfiguration of bus segments without software overhead or additional logic gates. |
| Industrial Sensor Data Aggregation | Legacy System Interface Bridge |
|
Use Scenario: Consolidating analog-to-digital converter outputs from eight remote sensors onto a shared backplane bus. IC Role / Device Role / Timing Role: Three-state outputs allow time-multiplexed sensor data transmission while maintaining isolation between unselected channels. Use Value: ≤10 μA three-state leakage prevents crosstalk-induced offset errors in precision 16-bit ADC systems operating at <1 LSB error tolerance. |
Use Scenario: Interfacing modern 3.3 V microcontrollers with legacy 5 V TTL peripherals such as UART transceivers or display controllers. IC Role / Device Role / Timing Role: Level-tolerant HC inputs accept 3.3 V logic highs while driving 5 V-tolerant loads - functions as passive voltage translator. Use Value: VIH = 3.15 V min at 4.5 V supply ensures reliable recognition of 3.3 V MCU outputs without external pull-ups or translators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal non-inverting three-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC244N | Two active-low output enables (1OE, 2OE); identical pinout and DC specs but different enable polarity logic. | Requires inverted enable signals for Group 1; unsuitable where active-high enable is mandated by host controller firmware. | Select SN74HC244N only if system logic naturally generates complementary OE signals or uses external inverters. |
| CD74HCT241M | HCT variant: 4.5–5.5 V only, TTL-compatible inputs (VIL = 0.8 V max), same dual-enable topology and SOIC-20 package. | Required when interfacing with legacy 5 V TTL outputs; incompatible with 3.3 V or 2 V logic domains due to narrow VCC range. | Choose CD74HCT241M exclusively for strict 5 V TTL system integration - not for mixed-voltage or low-power designs. |
Compared with CD74HC241M, SN74HC244N offers identical drive and timing but mandates active-low enables for both groups, while CD74HCT241M trades wide VCC range and CMOS input noise immunity for guaranteed TTL compatibility - making CD74HC241M the optimal choice for flexible, low-voltage, and noise-resilient bus buffering.
Availability
CD74HC241M is available at Aetrix Electronics and suitable for memory subsystems, microcontroller peripheral expansion, industrial sensor aggregation, and legacy interface bridging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CD74HC241M 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 delivering analog and embedded processing solutions, with over 90 years of innovation in logic, power management, and signal chain technologies.
CD74HC241M belongs to TI's legacy HC logic family - engineered for high-noise-immunity, wide-VCC operation, and interoperability with both CMOS and TTL systems in industrial, aerospace, and automotive applications.
FAQ
What is the function of the two output enable pins on CD74HC241M?
The CD74HC241M features two independent output enable pins: 1OE (pin 1, active-high) controls outputs Y1–Y4, and 2OE (pin 19, active-low) controls outputs Y5–Y8. This dual-polarity enable structure allows segmented bus control - for example, enabling upper and lower nibbles of an 8-bit data bus with separate logic signals - without requiring external inverters or additional gate logic in the system design.
Can CD74HC241M operate at 3.3 V supply voltage?
Yes, CD74HC241M is fully specified for operation from 2 V to 6 V, including 3.3 V. At VCC = 3.3 V, its input thresholds are VIH ≥ 2.31 V and VIL ≤ 0.99 V (30% noise margin), and it delivers ≥4 mA output drive - making it suitable for direct interfacing with 3.3 V microcontrollers and FPGAs without level-shifting circuitry.
Is CD74HC241M pin-compatible with CD74HC244M?
No - although both are octal non-inverting three-state buffers in SOIC-20 packages, CD74HC241M has one active-high (1OE) and one active-low (2OE) enable, whereas CD74HC244M has two active-low enables (1OE, 2OE). Their pinouts differ: CD74HC244M places both enables on pins 1 and 19 (same locations), but their logic polarity and internal routing are incompatible for direct substitution without board-level redesign.
What is the maximum output current per pin for CD74HC241M?
CD74HC241M guarantees ±7.8 mA output sink/source current per pin at VCC = 6 V and TA = 25°C, with derating over temperature. This rating supports driving 15 LSTTL loads directly and ensures signal integrity on PCB traces up to 15 cm in length at 20 MHz, provided proper VCC bypassing (0.1 μF ceramic capacitor near pin 20) is implemented.
Does CD74HC241M support operation at –55°C?
Yes, CD74HC241M is fully characterized and guaranteed to meet all electrical specifications from –55°C to +125°C. Its HC process technology and packaging (SOIC-20) are qualified for extended temperature operation, making it suitable for aerospace, downhole instrumentation, and automotive engine-control applications where ambient extremes are routine.
CD74HC241M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74HC
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
CD74HC241M FAQ
1.How can I place an order for CD74HC241M through Aetrix?
Please submit a Request for Quotation (RFQ) for CD74HC241M 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 CD74HC241M reliable?
The price and inventory of CD74HC241M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD74HC241M is usually 5 days.
3.What payment methods are accepted for CD74HC241M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD74HC241M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD74HC241M?
CD74HC241M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD74HC241M 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 CD74HC241M?
For technical support, including CD74HC241M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD74HC241M requirements.
6.How does Aetrix verify that CD74HC241M is sourced from the original manufacturer or authorized distributors?
All CD74HC241M 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 CD74HC241M meets industry standards.
7.What is the process for return or replacement of CD74HC241M?
All CD74HC241M units undergo pre-shipment inspection (PSI). If there is an issue with CD74HC241M, 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 CD74HC241M part is unused and in its original packaging.
Return procedure for CD74HC241M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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