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Nexperia USA Inc. 74AHCT245PW-Q100J
- Part No.:
- 74AHCT245PW-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74AHCT245PW-Q100J.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,339
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Product details
Overview
74AHCT245PW-Q100 from Nexperia is an automotive-grade octal bus transceiver with 3-state outputs, direction control (DIR), and active-low output enable (OE). It operates from 4.5 V to 5.5 V, supports bidirectional data flow between A- and B-buses, features TTL-compatible inputs, and is qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C) for engine control unit (ECU) communication interfaces.
For engineers reviewing the 74AHCT245PW-Q100 datasheet, 74AHCT245PW-Q100 pinout, 74AHCT245PW-Q100 application, or 74AHCT245PW-Q100 equivalent, key selection considerations include its 8-bit bidirectional translation capability, 3-state bus isolation timing (tpd ≤ 7.7 ns at 5 V, CL = 15 pF), overvoltage-tolerant inputs up to 5.5 V, and TSSOP20 package compatibility with automotive PCB layout constraints.
Technical Context
This transceiver implements dual-bus bidirectional data transfer using a single DIR input to select direction (A→B or B→A) and an active-low OE to place all outputs in high-impedance state. Its TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure compatibility with legacy 5 V logic systems while maintaining CMOS power efficiency.
Dynamic performance is defined by propagation delay (tpd), enable time (ten), and disable time (tdis), all specified across −40 °C to +125 °C with load capacitances of 15 pF and 50 pF. The device uses standard CMOS output stages with rail-to-rail VOH/VOL and exhibits balanced rise/fall times due to matched internal drive strength.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Enables direct interface with 5 V automotive microcontrollers and sensors without level-shifting. |
| Input Logic Type | TTL-compatible - VIH ≥ 2.0 V, VIL ≤ 0.8 V ensures reliable recognition of standard 5 V TTL signals. |
| Propagation Delay | ≤ 7.7 ns (CL = 15 pF, VCC = 5 V) - Supports high-speed interconnects in real-time ECU data buses. |
| Output Drive | ±8 mA (VOH/VOL guaranteed) - Sufficient to drive 50 pF loads across temperature and voltage extremes. |
| Operating Temperature | −40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood automotive environments. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - Robust handling during automotive assembly and field service. |
| Power Dissipation | ICC ≤ 80 μA (VCC = 5.5 V, static) - Ultra-low quiescent current reduces system-level thermal load. |
Pinout & Package
TSSOP20 plastic thin shrink small outline package (SOT360-1); 20 leads; body width 4.4 mm; lead pitch 0.65 mm; exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | LOW enables A→B data flow; HIGH enables B→A - determines bus master/slave relationship dynamically. |
| 2 (VCC) | Positive supply | Primary 4.5–5.5 V power rail; decoupling required within 5 mm for stable switching noise margin. |
| 3–10 (A0–A7) | Port A data I/O | 8-bit bidirectional data channel; connects to microcontroller GPIO or memory bus segment A. |
| 11–18 (B0–B7) | Port B data I/O | 8-bit bidirectional data channel; connects to peripheral ICs, CAN transceivers, or sensor clusters. |
| 19 (OE) | Output enable (active LOW) | Drives all A/B outputs to high-impedance when HIGH - enables multi-drop bus arbitration and hot-swap isolation. |
| 20 (GND) | Ground reference | 0 V return path; must be low-inductance connection to minimize ground bounce during 8-bit parallel switching. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation in safety-critical automotive modules including powertrain ECUs. |
| Overvoltage-tolerant inputs | Withstands up to 5.5 V regardless of VCC - allows safe interfacing with mixed-voltage subsystems without external clamping. |
| 3-state bus hold-off | OE-controlled high-impedance outputs prevent bus contention during firmware updates or fault recovery sequences. |
| Low dynamic power | CPD = 15 pF - minimizes switching current in high-frequency data transfers, reducing EMI and heat generation. |
| TSSOP20 with side-wettable flanks | Enables automated optical inspection (AOI) of solder joints - critical for zero-defect automotive manufacturing compliance. |
Applications
| Engine Control Unit (ECU) Data Bus | Advanced Driver Assistance Systems (ADAS) Sensor Hub |
|---|---|
|
Use Scenario: Bidirectional data exchange between MCU and external flash memory or CAN controller in engine management system. IC Role / Device Role / Timing Role: Octal bus transceiver managing address/data multiplexing and isolating MCU core from noisy peripheral domains. Use Value: Enables deterministic 8-bit parallel access with <7.7 ns propagation delay and AEC-Q100-certified reliability at 125 °C ambient. |
Use Scenario: Aggregating LVDS or SPI sensor data from radar, camera, and ultrasonic modules into central ADAS processor. IC Role / Device Role / Timing Role: Level-translating and buffering 8-bit parallel status/control signals between heterogeneous sensor interfaces. Use Value: Overvoltage-tolerant inputs accept 5 V sensor outputs directly; 3-state control prevents signal corruption during sensor reconfiguration. |
| Body Control Module (BCM) Gateway | Electric Power Steering (EPS) Motor Controller |
|
Use Scenario: Interfacing LIN transceivers and EEPROMs with 32-bit ARM-based BCM microcontroller via shared data bus. IC Role / Device Role / Timing Role: Isolating MCU I/O pins from LIN bus transients using OE-controlled 3-state outputs. Use Value: TTL-compatible inputs simplify integration with legacy LIN PHYs; HBM > 2000 V withstands automotive ESD events. |
Use Scenario: Transmitting torque command and position feedback between motor driver ASIC and MCU in closed-loop EPS system. IC Role / Device Role / Timing Role: High-speed bidirectional data conduit with precise timing control for real-time torque loop execution. Use Value: Balanced tPLH/tPHL ensures symmetrical latency in command vs. feedback paths, supporting ≤ 100 μs control cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHC245PW-Q100 | CMOS-input version (VIH = 3.85 V min at VCC = 5.5 V); lower ICC (4 μA typ), wider VCC range (2.0–5.5 V). | Better suited for mixed-voltage systems where A-side logic runs at 3.3 V and B-side at 5 V. | Select when interfacing with 3.3 V microcontrollers driving 5 V peripherals - leverages wider supply range and lower static power. |
| SN74LVC245APWREP | TI's enhanced-reliability variant; VCC = 1.65–3.6 V only; LVTTL inputs; higher drive (±24 mA); different pinout (DIR on pin 19, OE on pin 1). | Designed for aerospace/defense; incompatible pin mapping and voltage domain - requires PCB redesign. | Choose only for new designs targeting 3.3 V-only systems with need for higher drive strength and extended temperature screening. |
Compared with 74AHC245PW-Q100 and SN74LVC245APWREP, the 74AHCT245PW-Q100 uniquely bridges legacy 5 V TTL logic and modern automotive MCUs via guaranteed TTL input thresholds, AEC-Q100 Grade 1 qualification, and TSSOP20 AOI-compliant packaging - making it optimal for cost-sensitive, high-volume ECU upgrades.
Availability
74AHCT245PW-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS sensor hubs, body control modules, and electric power steering systems requiring stable component supply across automotive production lifecycles.
Supply support for 74AHCT245PW-Q100 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 leading semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-performance analog, logic, and discrete components for automotive, industrial, and consumer markets.
This device belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for robust, low-latency data routing in harsh-temperature vehicle subsystems where functional safety and long-term supply stability are mandatory.
FAQ
What is the maximum clock frequency supported by the 74AHCT245PW-Q100?
The 74AHCT245PW-Q100 is not a clocked device and has no internal clock; it is a combinational transceiver. Its usable data rate depends on propagation delay and system timing margins. With tpd ≤ 7.7 ns (VCC = 5 V, CL = 15 pF), it supports reliable 8-bit parallel transfers up to ~65 MHz in ideal conditions, assuming setup/hold times are met by the driving controller.
Can the 74AHCT245PW-Q100 be used for level translation between 3.3 V and 5 V domains?
No - the 74AHCT245PW-Q100 requires VCC = 4.5–5.5 V and has TTL-level inputs designed for 5 V logic families. For 3.3 V ↔ 5 V translation, use the 74AHC245PW-Q100 (CMOS-input, VCC = 2.0–5.5 V) or dedicated level translators like TXB0108. Using this part with 3.3 V VCC violates recommended operating conditions.
Is the GND pin (pin 10) the only ground connection required?
Yes - pin 10 is the sole functional ground terminal. The TSSOP20 package (SOT360-1) does not include an exposed thermal pad; all grounding is handled through this single pin. Ensure low-impedance PCB routing to the main system ground plane to maintain noise immunity during simultaneous 8-bit switching.
Does the 74AHCT245PW-Q100 support hot-plug or live insertion?
It supports controlled hot-plug operation only when OE is held HIGH (outputs disabled) during insertion. The overvoltage-tolerant inputs (to 5.5 V) and high-impedance 3-state outputs prevent damage or bus contention. However, full hot-plug compliance requires external circuitry (e.g., slew-rate limiting, series resistors) per ISO 10605 and OEM-specific requirements.
74AHCT245PW-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
74AHCT245PW-Q100J FAQ
1.How can I place an order for 74AHCT245PW-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT245PW-Q100J 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 74AHCT245PW-Q100J reliable?
The price and inventory of 74AHCT245PW-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT245PW-Q100J is usually 5 days.
3.What payment methods are accepted for 74AHCT245PW-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT245PW-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT245PW-Q100J?
74AHCT245PW-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT245PW-Q100J 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 74AHCT245PW-Q100J?
For technical support, including 74AHCT245PW-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT245PW-Q100J requirements.
6.How does Aetrix verify that 74AHCT245PW-Q100J is sourced from the original manufacturer or authorized distributors?
All 74AHCT245PW-Q100J 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 74AHCT245PW-Q100J meets industry standards.
7.What is the process for return or replacement of 74AHCT245PW-Q100J?
All 74AHCT245PW-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT245PW-Q100J, 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 74AHCT245PW-Q100J part is unused and in its original packaging.
Return procedure for 74AHCT245PW-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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