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NXP Semiconductors N74F242D,602
- Part No.:
- N74F242D,602
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
N74F242D,602.pdf
- Description:
- IC TRANSCEIVER INVERT 5.5V 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,035
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Product details
Overview
N74F242D,602 from Philips Semiconductors is a quad inverting 3-state transceiver IC used for bidirectional data bus interfacing between TTL-compatible logic systems. It features 8 data lines (A0–A3, B0–B3), dual active-low output enables (OEA, OEB), 4.3 ns typical propagation delay, 31.2 mA typical supply current at VCC = 5 V, and operates across 0°C to +70°C commercial temperature range.
For engineers reviewing the N74F242D,602 datasheet, N74F242D,602 pinout, N74F242D,602 application, or N74F242D,602 equivalent, key selection considerations include its inverting transceiver function, dual independent 3-state control, TTL-compatible input/output thresholds, and SO14 package suitability for space-constrained PCB layouts.
Technical Context
The N74F242D,602 implements two independent 4-bit bidirectional data paths with inverting logic transfer (B = A̅ when enabled). Each path is controlled by separate active-low output enable inputs (OEA, OEB), allowing selective direction and isolation of A- and B-side buses without contention.
It operates strictly within TTL voltage levels: VIH = 2.0 V min, VIL = 0.8 V max, VOH = 2.4 V min at IOH = –15 mA, VOL = 0.55 V max at IOL = 64 mA. Its 3-state outputs support high-impedance isolation with off-state leakage ≤ ±70 µA under specified conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Quad inverting 3-state transceiver for bidirectional bus interface |
| Propagation Delay | 4.3 ns typical (An/Bn to Bn/An), enabling sub-230 MHz data rate operation |
| Supply Current | 31.2 mA typical total ICC at VCC = 5 V, Tamb = 25°C |
| Output Drive | –15 mA high-level / +64 mA low-level, compatible with standard TTL fan-out |
| Operating Range | 0°C to +70°C ambient, VCC = 4.5 V to 5.5 V |
| Input Loading | 3.5/1.67 FAST unit loads (high/low), limiting input current to ±70 µA / 1.0 mA |
| Output Loading | 750/106.7 FAST unit loads (high/low), supporting up to 15 mA / 64 mA drive |
Pinout & Package
Package: Plastic small outline (SO14), 14-lead, 3.9 mm body width, compliant with SOT108-1 drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OEA | Active-low output enable for A-side drivers (A0–A3 → B0–B3) |
| 2 | A0 | Inverting input/output terminal for channel 0 (A side) |
| 3 | A1 | Inverting input/output terminal for channel 1 (A side) |
| 4 | A2 | Inverting input/output terminal for channel 2 (A side) |
| 5 | A3 | Inverting input/output terminal for channel 3 (A side) |
| 6 | OEB | Active-low output enable for B-side drivers (B0–B3 → A0–A3) |
| 7 | GND | Ground reference for all circuitry and power return path |
| 8 | B3 | Inverting input/output terminal for channel 3 (B side) |
| 9 | B2 | Inverting input/output terminal for channel 2 (B side) |
| 10 | B1 | Inverting input/output terminal for channel 1 (B side) |
| 11 | B0 | Inverting input/output terminal for channel 0 (B side) |
| 12 | NC | No internal connection - must be left unconnected |
| 13 | NC | No internal connection - must be left unconnected |
| 14 | VCC | +5 V power supply input for TTL-compatible operation |
Key Features
| Feature | Design Value |
|---|---|
| Inverting Data Transfer | Ensures signal polarity inversion (B = A̅) during bidirectional transmission, useful for level-shifting or logic inversion in bus architectures |
| Dual Independent 3-State Control | OEA and OEB allow isolated enable/disable of A→B and B→A paths, preventing bus contention in multi-master systems |
| TTL-Compatible Interface | Meets standard TTL input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and output drive (VOH ≥ 2.4 V, VOL ≤ 0.55 V), ensuring interoperability with legacy logic |
| Low Propagation Delay | 4.3 ns typical delay supports high-speed synchronous bus timing with minimal skew in 8-bit parallel interfaces |
| SO14 Package | Surface-mount plastic small outline package (SOT108-1) enables automated assembly and compact board layout versus DIP alternatives |
Applications
| Microprocessor Bus Interface | Memory Address Latching |
|---|---|
Use Scenario: Interfacing an 8-bit microprocessor data bus to peripheral devices requiring inverted data flow and isolated bus segments. IC Role / Device Role / Timing Role: Bidirectional inverting transceiver managing data direction and isolation between CPU and peripherals via OEA/OEB control signals. Use Value: Prevents bus contention during read/write cycles while maintaining TTL-compatible timing margins and signal integrity. | Use Scenario: Latching inverted address bits from a microcontroller to external memory chips with complementary address decoding requirements. IC Role / Device Role / Timing Role: Inverting transceiver providing controlled, 3-state-enabled address bit inversion and buffering before memory address inputs. Use Value: Enables direct connection to memory devices expecting inverted address mapping without additional logic gates or timing penalties. |
| Industrial Control Backplane | Legacy System Bus Extension |
Use Scenario: Extending a TTL-based industrial backplane with isolated, polarity-inverted data lanes between controller and I/O modules. IC Role / Device Role / Timing Role: Isolating and inverting data channels on a shared backplane using independent OEA/OEB enables for fault containment. Use Value: Supports hot-swap capability and module-level isolation while preserving signal integrity over longer trace lengths. | Use Scenario: Upgrading aging test equipment with modern controllers while retaining legacy TTL bus architecture and signal polarity conventions. IC Role / Device Role / Timing Role: Translating and inverting data between new controller outputs and legacy device inputs requiring complementary logic states. Use Value: Eliminates need for discrete inverters or redesign of legacy firmware, reducing integration time and validation risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74F242N | Dual inverting transceiver in 14-pin PDIP package; identical electrical specs but through-hole mounting | Suitable for prototyping, breadboarding, or legacy through-hole production lines | Select SN74F242N when manual assembly, socketing, or compatibility with existing DIP footprints is required |
| 74ACT242SCX | Advanced CMOS version with 5 V tolerance, lower ICC (10 µA typ), faster tPLH/tPHL (3.5 ns), and higher noise immunity | Preferred for mixed-voltage systems or where static power consumption and EMI robustness are critical | Choose 74ACT242SCX for new designs needing lower power, improved noise margin, or tighter AC timing control |
Compared with N74F242D,602, SN74F242N offers identical functionality in a through-hole package for ease of manual handling, while 74ACT242SCX provides superior speed, noise immunity, and static power efficiency-making it suitable for next-generation designs where F-series TTL limitations (e.g., higher ICC, lower noise margin) are unacceptable.
Availability
N74F242D,602 is available at Aetrix Electronics and suitable for microprocessor bus interface, memory address latching, and industrial control backplane applications requiring stable component supply and long-term obsolescence management.
Supply support for N74F242D,602 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
Philips Semiconductors (now NXP Semiconductors) was a leading European semiconductor manufacturer known for high-reliability logic families and industrial-grade analog products.
The 74F logic family-including N74F242D,602-was engineered for high-speed TTL-compatible operation in commercial embedded systems, offering optimized propagation delay and drive strength for 1980s–1990s digital system design.
FAQ
What is the logic function of the N74F242D,602?
The N74F242D,602 is a quad inverting 3-state transceiver: when OEA is low, A0–A3 drive inverted values onto B0–B3; when OEB is low, B0–B3 drive inverted values onto A0–A3. Both enables must be high to place all outputs in high-impedance state. This behavior is confirmed in the Function Table on page 4 of the Philips 1990 datasheet.
Does the N74F242D,602 support non-inverting operation?
No. The N74F242D,602 implements only inverting data transfer (B = A̅, A = B̅) per its logic diagram and function table. For non-inverting transceivers, Philips offered the pin-compatible N74F243D,602, which is explicitly documented as non-inverting in the same datasheet.
What are the absolute maximum ratings for the N74F242D,602?
The N74F242D,602 has absolute maximum ratings of VCC = –0.5 V to +7.0 V, VIN = –0.5 V to +7.0 V, IOUT (sink) = 128 mA per output, and operating temperature range of 0°C to +70°C. Exceeding these limits may impair device reliability, as stated in Section 4 of the Philips datasheet.
Is the N74F242D,602 pin-compatible with other 74F-series transceivers?
The N74F242D,602 shares the same SO14 pinout as N74F243D,602 (non-inverting variant), including identical placement of VCC (pin 14), GND (pin 7), OEA (pin 1), OEB (pin 6), and data terminals. However, functional differences require careful schematic review before substitution.
What is the recommended operating voltage range for the N74F242D,602?
The N74F242D,602 is specified for VCC = 4.5 V to 5.5 V (±10% of 5 V) across 0°C to +70°C ambient. Operation outside this range risks violation of DC electrical characteristics such as VOH, VOL, and input thresholds, as defined in the Recommended Operating Conditions table (page 4).
N74F242D,602 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74F
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 15mA, 64mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
N74F242D,602 FAQ
1.How can I place an order for N74F242D,602 through Aetrix?
Please submit a Request for Quotation (RFQ) for N74F242D,602 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 N74F242D,602 reliable?
The price and inventory of N74F242D,602 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for N74F242D,602 is usually 5 days.
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Once your N74F242D,602 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 N74F242D,602?
For technical support, including N74F242D,602 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your N74F242D,602 requirements.
6.How does Aetrix verify that N74F242D,602 is sourced from the original manufacturer or authorized distributors?
All N74F242D,602 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 N74F242D,602 meets industry standards.
7.What is the process for return or replacement of N74F242D,602?
All N74F242D,602 units undergo pre-shipment inspection (PSI). If there is an issue with N74F242D,602, 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 N74F242D,602 part is unused and in its original packaging.
Return procedure for N74F242D,602:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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