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Nexperia USA Inc. 74HCT245PW-Q100J
- Part No.:
- 74HCT245PW-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT245PW-Q100J.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,420
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Product details
Overview
74HCT245PW-Q100 from Nexperia is an automotive-grade octal 3-state bidirectional bus transceiver with TTL-compatible inputs, 20-pin TSSOP package, -40 °C to +125 °C operating range, and 4.5 V to 5.5 V supply voltage - used for level-shifting and data bus isolation in engine control units and ADAS domain controllers.
For engineers reviewing the 74HCT245PW-Q100 datasheet, 74HCT245PW-Q100 pinout, 74HCT245PW-Q100 application, or 74HCT245PW-Q100 equivalent, key selection criteria include direction control (DIR) logic, output enable (OE) polarity, propagation delay at 5 V (10 ns typ), 3-state leakage (±5 μA max), and AEC-Q100 Grade 1 qualification for under-hood deployment.
Technical Context
This device implements non-inverting bidirectional data flow between two 8-bit buses using a single DIR signal to select direction (A→B or B→A) and an active-low OE input to place all outputs in high-impedance state. It features integrated input clamp diodes enabling safe interfacing with voltages exceeding VCC when used with current-limiting resistors.
Designed for automotive environments, it meets AEC-Q100 Grade 1 requirements, supports wide temperature operation (-40 °C to +125 °C), and delivers TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5.5 V) while maintaining CMOS-level output drive (VOH ≥ 3.7 V at IO = -6 mA, VOL ≤ 0.4 V at IO = 6 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V automotive power rails and tolerance against load-dump transients. |
| Propagation Delay | 10 ns typical (VCC = 5.0 V, CL = 15 pF) - enables reliable 50 MHz bus operation with timing margin for routing skew. |
| Output Drive | ±6 mA - sufficient to drive 50 pF loads across PCB traces without signal integrity degradation. |
| 3-State Leakage | ±5.0 μA max (VCC = 5.5 V) - minimizes standby current in powered-down subsystems. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - guarantees robust recognition of TTL logic levels across full temperature range. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - exceeds AEC-Q100 requirements for assembly and field reliability. |
| Operating Temperature | -40 °C to +125 °C - qualified for engine bay and transmission control module mounting locations. |
Pinout & Package
TSSOP20 plastic thin shrink small outline package (SOT360-1), 20 leads, body width 4.4 mm, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | LOW selects A→B data flow; HIGH selects B→A - determines bus master/slave relationship dynamically. |
| 2–9 (A0–A7) | Port A data I/O | 8-bit bidirectional interface tied to microcontroller or ASIC local bus; clamped for overvoltage resilience. |
| 10 (GND) | Ground reference | 0 V return path for all internal logic and I/O; must be low-inductance connection for noise immunity. |
| 11–18 (B0–B7) | Port B data I/O | 8-bit bidirectional interface connected to peripheral bus or sensor cluster; electrically isolated when OE is HIGH. |
| 19 (OE) | Output enable (active LOW) | Drives all A/B outputs to high-impedance when HIGH - enables multi-drop bus arbitration and hot-swap capability. |
| 20 (VCC) | Supply voltage | Primary power rail; decoupling capacitor (100 nF) required within 5 mm for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from -40 °C to +125 °C in automotive powertrain and chassis systems. |
| TTL-compatible input thresholds | Ensures interoperability with legacy 5 V microcontrollers and FPGAs without level-shifter circuitry. |
| Clamp diode protection on all inputs | Allows safe interface to signals up to VCC + 0.5 V using external current-limiting resistors. |
| Low dynamic power dissipation | CPD = 30 pF - limits switching current in high-frequency bus applications, reducing thermal load. |
| Side-wettable flanks (SWF) | Enables automated optical inspection (AOI) of solder joints in TSSOP20 package for production traceability. |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Isolating CAN/FlexRay transceiver data lines from MCU GPIO during firmware update or fault recovery. IC Role / Device Role / Timing Role: Bidirectional bus buffer managing data flow between MCU and communication PHY under DIR-controlled direction and OE-gated enable. Use Value: Prevents bus contention during reset sequences and enables hot-swappable module replacement without system shutdown. |
Use Scenario: Level-shifting sensor data from 3.3 V image processor to 5 V radar preprocessor in multi-sensor fusion module. IC Role / Device Role / Timing Role: Voltage-tolerant transceiver translating logic levels while preserving signal integrity across 10 cm PCB trace. Use Value: Eliminates need for discrete level-shifters, reduces BOM count by one IC, and maintains <10 ns timing skew across all 8 channels. |
| Body Control Module (BCM) | Infotainment Head Unit |
Use Scenario: Multiplexing door lock actuator commands and window motor feedback signals onto shared LIN-compatible bus. IC Role / Device Role / Timing Role: 3-state-enabled bus isolator preventing backfeed from actuators into MCU I/O pins during power cycling. Use Value: Reduces electromagnetic interference (EMI) from inductive loads and extends MCU GPIO lifetime by blocking reverse current paths. |
Use Scenario: Interfacing HDMI CEC controller (3.3 V) with legacy 5 V IR receiver and display backlight driver circuits. IC Role / Device Role / Timing Role: Direction-controlled data bridge synchronizing command packets between mixed-voltage subsystems. Use Value: Enables single-chip CEC protocol handling without external voltage translators, cutting board space by 28 mm². |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC245APWR | Lower VCC range (1.65–3.6 V); CMOS inputs only; no AEC-Q100 qualification. | Suitable for 3.3 V consumer electronics; not rated for automotive under-hood use. | Select only for non-automotive designs requiring lower supply voltage and higher speed (7.3 ns tpd at 3.3 V). |
| 74LVX245MTR | Wider VCC (2.0–3.6 V); guaranteed 3.3 V operation; AEC-Q100 Grade 2 (−40 °C to +105 °C) only. | Limited to cabin ambient applications; insufficient for powertrain or ADAS thermal profiles. | Choose when cost sensitivity outweighs extended temperature requirement and 5 V compatibility is unnecessary. |
Compared with SN74LVC245APWR and 74LVX245MTR, the 74HCT245PW-Q100 uniquely combines 5 V TTL compatibility, AEC-Q100 Grade 1 qualification, and 125 °C operation - making it the sole option for safety-critical engine and braking system interfaces where voltage margin and thermal resilience are non-negotiable.
Availability
74HCT245PW-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and body control modules requiring stable component supply across automotive production lifecycles.
Supply support for 74HCT245PW-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 global semiconductor expert focused on essential efficiency technologies, delivering high-performance, high-reliability components for automotive, industrial, and mobile markets.
The 74HCT245PW-Q100 belongs to Nexperia's automotive logic portfolio, engineered specifically for robust bidirectional data transfer in harsh-temperature vehicle networks where signal integrity and qualification compliance are mandatory.
FAQ
What is the maximum clock frequency supported by the 74HCT245PW-Q100?
The device does not operate on a clock; it is asynchronous. Its 10 ns typical propagation delay at 5 V allows reliable use in DC to ~50 MHz data bus applications, assuming trace lengths and loading meet signal integrity constraints defined by tpd and tt (transition time ≤15 ns).
Can the 74HCT245PW-Q100 interface 3.3 V logic with 5 V logic safely?
No - its inputs are TTL-compatible (VIH ≥ 2.0 V), but outputs swing rail-to-rail (0 V to VCC). Driving a 3.3 V input with 5 V outputs risks damage unless external clamping or level-shifting is added; it is designed for 5 V ↔ 5 V or 5 V → tolerant 3.3 V inputs with series resistance.
Is the exposed pad on the TSSOP20 package electrically connected?
No - the thermal pad in SOT360-1 is not electrically connected per Nexperia's datasheet (Section 5.1). It may remain floating or be connected to GND for thermal improvement, but no electrical function is assigned to it.
How does the DIR pin behave during power-up or brown-out conditions?
DIR has no internal pull-up/down; it is undefined at power-up. System design must ensure DIR is held LOW or HIGH via external bias (e.g., resistor to VCC/GND) before VCC stabilizes to prevent metastability or unintended bus direction during reset.
74HCT245PW-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- 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:
- 6mA, 6mA
- 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
74HCT245PW-Q100J FAQ
1.How can I place an order for 74HCT245PW-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT245PW-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 74HCT245PW-Q100J reliable?
The price and inventory of 74HCT245PW-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT245PW-Q100J is usually 5 days.
3.What payment methods are accepted for 74HCT245PW-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT245PW-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT245PW-Q100J?
74HCT245PW-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT245PW-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 74HCT245PW-Q100J?
For technical support, including 74HCT245PW-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT245PW-Q100J requirements.
6.How does Aetrix verify that 74HCT245PW-Q100J is sourced from the original manufacturer or authorized distributors?
All 74HCT245PW-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 74HCT245PW-Q100J meets industry standards.
7.What is the process for return or replacement of 74HCT245PW-Q100J?
All 74HCT245PW-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT245PW-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 74HCT245PW-Q100J part is unused and in its original packaging.
Return procedure for 74HCT245PW-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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