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Nexperia USA Inc. 74AHC245D-Q100J
- Part No.:
- 74AHC245D-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74AHC245D-Q100J.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,798
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Product details
Overview
74AHC245D-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 across 2.0 V to 5.5 V supply, supports bidirectional data flow between A- and B-buses, features overvoltage-tolerant inputs up to 5.5 V, and is qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C) for engine control and body electronics applications.
For engineers reviewing the 74AHC245D-Q100 datasheet, 74AHC245D-Q100 pinout, 74AHC245D-Q100 application, or 74AHC245D-Q100 equivalent, key selection criteria include its CMOS-level input compatibility, 8-bit bidirectional translation capability, SO20 package with side-wettable flanks, propagation delay down to 3.5 ns at 5 V, and automotive qualification status - all critical for mixed-voltage CAN gateway interfaces, ADAS sensor hubs, and infotainment domain controllers.
Technical Context
This device implements a dual-rail 8-bit bidirectional bus interface with independent DIR and OE control logic. Its Schmitt-trigger inputs enhance noise immunity in noisy automotive environments, while overvoltage tolerance enables safe interfacing between 3.3 V microcontrollers and 5 V legacy peripherals without level-shifting circuitry.
The SO20 (SOT163-1) package provides mechanical robustness and AOI-compatible side-wettable flanks for automated optical inspection in high-reliability automotive PCB assembly. The device's balanced tPLH/tPHL propagation delays ensure deterministic timing in synchronous data transfers between ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - Enables interoperability across 3.3 V and 5 V automotive subsystems without external regulators. |
| Operating Temperature | −40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| Propagation Delay (tpd) | 3.5 ns (typ) at VCC = 5.0 V, CL = 15 pF - Supports high-speed data handshaking in real-time control loops. |
| Input Voltage Tolerance | Up to 5.5 V regardless of VCC - Allows direct connection to higher-voltage buses without clamping diodes. |
| Output Drive Strength | ±8 mA at VCC = 4.5 V - Sufficient to drive 15 pF loads across 10 cm traces in ECU backplanes. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - Meets stringent automotive ESD immunity requirements per ISO 10605. |
| Power Dissipation | 500 mW max (SO20) - Supports continuous operation in sealed enclosures with limited airflow. |
Pinout & Package
74AHC245D-Q100 uses the SO20 plastic small outline package (SOT163-1), 20-pin, 7.5 mm body width, with side-wettable flanks for automated optical inspection of solder joints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction control input | LOW enables A→B data flow; HIGH enables B→A - determines bus traffic direction in real time. |
| 2–9 (A0–A7) | Port A data I/O | 8-bit bidirectional data channel connected to MCU or ASIC side of interface. |
| 10 (GND) | Ground reference | 0 V return path for all internal logic and I/O - must be low-inductance connection in automotive layouts. |
| 11–18 (B0–B7) | Port B data I/O | 8-bit bidirectional data channel connected to peripheral or legacy subsystem side. |
| 19 (OE) | Output enable (active LOW) | Drives all outputs to high-impedance when HIGH - essential for bus arbitration and hot-swap isolation. |
| 20 (VCC) | Supply voltage | Primary power rail - decoupling capacitor (100 nF) required within 5 mm per JEDEC standards. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation with full parametric testing - eliminates need for additional qualification in Tier 1 designs. |
| Overvoltage-tolerant inputs | Accepts up to 5.5 V on any input pin regardless of VCC - enables direct interfacing with 5 V sensors or displays without external level shifters. |
| Schmitt-trigger inputs | Hysteresis ≥ 0.5 V at VCC = 3.3 V - rejects EMI-induced glitches on long harness-connected lines in vehicle networks. |
| CMOS input thresholds | VIH = 3.85 V (min) at VCC = 5.5 V; VIL = 1.65 V (max) - ensures reliable logic recognition across voltage tolerances in 5 V domains. |
| Side-wettable flanks (SWF) | Exposed copper on package sides - enables automated X-ray and AOI verification of solder joint integrity in SMT reflow processes. |
Applications
| Engine Control Unit Interface | ADAS Camera Hub |
|---|---|
|
Use Scenario: Interfacing a 3.3 V ARM-based MCU to legacy 5 V CAN transceivers and analog sensor signal conditioners in an integrated powertrain controller. IC Role / Device Role: Bidirectional voltage-level translator and bus isolator between mixed-supply domains. Use Value: Eliminates discrete level-shifter ICs and reduces BOM count by consolidating 8-channel translation into one AEC-Q100-compliant device. |
Use Scenario: Aggregating parallel LVDS video streams from multiple surround-view cameras into a central image processor with 3.3 V I/O. IC Role / Device Role: High-speed, low-skew data buffer enabling synchronized frame capture across camera channels. Use Value: Propagation delay matching < ±0.5 ns ensures sub-microsecond inter-channel skew - critical for pixel-aligned stitching. |
| Infotainment Domain Controller | Body Control Module Gateway |
|
Use Scenario: Bridging a 5 V audio codec and 3.3 V application processor in a head-unit design requiring simultaneous audio data and control register access. IC Role / Device Role: Dual-directional data multiplexer supporting concurrent read/write operations on shared memory-mapped peripherals. Use Value: Active-low OE allows dynamic bus release during DMA cycles - prevents contention during processor interrupt servicing. |
Use Scenario: Isolating LIN and SENT communication lines from a central BCM microcontroller while sharing common power and ground rails. IC Role / Device Role: Fault-containment barrier preventing fault propagation between subnetworks during short-circuit events. Use Value: High-impedance OFF-state leakage < ±0.25 μA at 5.5 V ensures < 1 μA standby current - meets ISO 19453-3 sleep-mode requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT245D-Q100 | TTL-compatible inputs (VIH = 2.0 V min); identical pinout and package | Better suited for interfacing with legacy 5 V TTL logic; slightly higher ICC at 5 V | Select when connecting to older microcontrollers or discrete TTL gates requiring lower VIH thresholds. |
| SN74LVC245AQPWRQ1 | Lower VCC range (1.65–3.6 V); LVTTL input thresholds; TSSOP20 package | Optimized for 3.3 V-only systems; not rated for 5 V operation or overvoltage tolerance | Choose only for pure 3.3 V domains where cost and footprint are prioritized over mixed-voltage flexibility. |
Compared with 74AHCT245D-Q100, the 74AHC245D-Q100 offers superior noise margin in 5 V systems due to CMOS thresholds, while SN74LVC245AQPWRQ1 trades overvoltage tolerance for lower static power - making the 74AHC245D-Q100 the optimal choice for heterogeneous automotive voltage domains requiring robustness and interoperability.
Availability
74AHC245D-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS camera hubs, and infotainment domain controllers requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for 74AHC245D-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 delivering high-performance, reliable components for automotive, industrial, and consumer applications - with leadership in logic, MOSFETs, and ESD protection.
The 74AHC245D-Q100 belongs to Nexperia's automotive-qualified logic portfolio, designed specifically to meet stringent AEC-Q100 reliability, thermal, and EMI resilience requirements in safety-critical vehicle subsystems.
FAQ
Is the 74AHC245D-Q100 pin-compatible with standard 74-series transceivers?
Yes - it uses the industry-standard SO20 pinout defined in SOT163-1, matching 74LS245, 74HC245, and 74HCT245 footprints. Pin 1 (DIR), pins 2–9 (A0–A7), pin 10 (GND), pins 11–18 (B0–B7), pin 19 (OE), and pin 20 (VCC) align identically, enabling drop-in replacement in existing layouts without redesign.
What is the maximum capacitive load this device can drive reliably?
The 74AHC245D-Q100 is characterized up to 50 pF load capacitance per output, with tpd = 7.5 ns (max) and tdis = 12.5 ns (max) at VCC = 5.0 V. Driving >50 pF requires external series termination or reduced slew rate control via PCB trace impedance matching to maintain signal integrity.
Does the GND pin (pin 10) require a dedicated thermal pad connection?
No - pin 10 is the functional ground reference only. The SO20 package has no exposed thermal pad. Thermal dissipation relies on copper pour under the leads and standard PCB thermal vias; no special grounding or soldering of auxiliary pads is needed or specified.
Can OE and DIR be tied together for unidirectional operation?
Yes - tying OE and DIR to the same control signal configures the device as a unidirectional buffer (A→B only when both are LOW). However, this forfeits independent enable/disable control and disables B→A functionality; use only when direction is fixed and bus arbitration is unnecessary.
74AHC245D-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHC
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74AHC245D-Q100J FAQ
1.How can I place an order for 74AHC245D-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC245D-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 74AHC245D-Q100J reliable?
The price and inventory of 74AHC245D-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC245D-Q100J is usually 5 days.
3.What payment methods are accepted for 74AHC245D-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC245D-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC245D-Q100J?
74AHC245D-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC245D-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 74AHC245D-Q100J?
For technical support, including 74AHC245D-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC245D-Q100J requirements.
6.How does Aetrix verify that 74AHC245D-Q100J is sourced from the original manufacturer or authorized distributors?
All 74AHC245D-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 74AHC245D-Q100J meets industry standards.
7.What is the process for return or replacement of 74AHC245D-Q100J?
All 74AHC245D-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC245D-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 74AHC245D-Q100J part is unused and in its original packaging.
Return procedure for 74AHC245D-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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