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Nexperia USA Inc. 74AHCT244PW-Q100,1
- Part No.:
- 74AHCT244PW-Q100,1
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74AHCT244PW-Q100,1.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,166
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Product details
Overview
74AHCT244PW-Q100 from Nexperia is an automotive-qualified octal 3-state buffer/line driver in TSSOP20 package, featuring dual independent output enables (1OE, 2OE), TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), and operation from -40 °C to +125 °C. It supports mixed-voltage interfacing via overvoltage-tolerant inputs (up to 5.5 V) and delivers balanced propagation delays as low as 3.5 ns (CL = 15 pF, VCC = 5 V) in automotive body control modules.
For engineers reviewing the 74AHCT244PW-Q100 datasheet, 74AHCT244PW-Q100 pinout, 74AHCT244PW-Q100 application, or 74AHCT244PW-Q100 equivalent, this device is selected for high-reliability bidirectional bus buffering in CAN/LIN subsystems, ECU I/O expansion, and automotive sensor interface consolidation where AEC-Q100 Grade 1 compliance, 3-state contention control, and 5.5 V overvoltage tolerance are required.
Technical Context
This device implements two independent 4-bit non-inverting buffers, each controlled by a dedicated active-low output enable (1OE for Y0–Y3, 2OE for Y0–Y3). Inputs feature Schmitt-trigger action for noise immunity, and outputs drive up to ±8 mA at VCC = 4.5 V with VOH ≥ 3.94 V and VOL ≤ 0.36 V under load.
It operates across a 4.5–5.5 V supply range with static input thresholds aligned to TTL logic families, enabling direct interfacing with legacy microcontrollers and ASICs. The 20-pin TSSOP package (SOT360-1) supports AOI-capable solder joint inspection and thermal derating of 10.0 mW/K above 100 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with 5 V automotive power rails and tolerates transient dips without functional loss. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - Guarantees reliable recognition of TTL-level signals from MCUs and peripheral ICs. |
| Propagation Delay | 3.5 ns (typ, CL = 15 pF, VCC = 5 V) - Enables high-speed data routing in time-critical vehicle networks like LIN header arbitration. |
| Output Drive | ±8 mA (IOH/IOL) - Sufficient to drive multiple CMOS/TTL loads or terminate short PCB traces without external buffers. |
| Overvoltage Tolerance | Inputs rated to 5.5 V - Allows safe connection to 5 V buses while powered from lower supplies (e.g., 3.3 V domains). |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - Qualified for engine bay, transmission, and ADAS ECU placement without derating. |
| ESD Robustness | HBM > 2000 V, CDM > 1000 V - Mitigates field failures during handling and in-vehicle electrostatic events. |
Pinout & Package
TSSOP20 package (SOT360-1), 4.4 mm body width, 0.65 mm pitch, 20-terminal surface-mount with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low enables: Pin 1 controls Y0–Y3; Pin 19 controls Y0–Y3 - Enables independent gating of two 4-bit data lanes. |
| 2, 4, 6, 8 | 1A0–1A3 | Group 1 data inputs - Accept logic signals routed to first buffer section (e.g., MCU port A). |
| 17, 15, 13, 11 | 2A0–2A3 | Group 2 data inputs - Accept logic signals routed to second buffer section (e.g., sensor cluster outputs). |
| 18, 16, 14, 12 | 1Y0–1Y3 | Group 1 3-state outputs - Drive downstream loads only when 1OE = LOW; high-Z otherwise. |
| 3, 5, 7, 9 | 2Y0–2Y3 | Group 2 3-state outputs - Isolate second data path independently from Group 1 using 2OE. |
| 10 | GND | Reference ground plane - Must be low-impedance connection to minimize switching noise coupling. |
| 20 | VCC | Primary supply rail - Requires local 100 nF ceramic decoupling within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from −40 °C to +125 °C - Eliminates need for additional thermal margining in under-hood ECUs. |
| Dual independent 3-state control | Separate 1OE and 2OE pins - Enables concurrent management of two isolated data paths (e.g., CAN TX/RX isolation or dual-sensor readout). |
| Overvoltage-tolerant inputs | Rated to 5.5 V regardless of VCC - Permits direct connection to 5 V buses while operating from 3.3 V supplies without level shifters. |
| Schmitt-trigger inputs | Hysteresis ≥ 0.3 V typical - Rejects noise on long harness runs (e.g., door module switches or HVAC sensors). |
| Low dynamic power | CPD = 12 pF - Limits switching current in high-frequency applications (e.g., 1 MHz LIN polling), reducing system-level heat generation. |
Applications
| Body Control Module (BCM) | Instrument Cluster Interface |
|---|---|
Use Scenario: Consolidating discrete switch inputs (door locks, window switches) into a single MCU port while maintaining electrical isolation between zones. IC Role / Device Role / Timing Role: Bidirectional 3-state buffer isolating noisy mechanical switch returns from MCU GPIOs; enables software-controlled input sampling windows. Use Value: Prevents cross-talk between door and seat control circuits; reduces BOM count by replacing four discrete buffers with one 8-bit device. |
Use Scenario: Driving segmented LCD backlight drivers and SPI-based display controllers from a shared 5 V bus in a temperature-stressed cockpit environment. IC Role / Device Role / Timing Role: Level-shifting and fan-out buffer translating 3.3 V MCU outputs to 5 V display peripherals with precise enable timing. Use Value: Eliminates need for discrete level shifters; ensures glitch-free backlight sequencing during cold start (-40 °C) via guaranteed VIH/VIL margins. |
| Powertrain Sensor Hub | ADAS Camera Interface |
Use Scenario: Aggregating analog sensor conditioning outputs (O2, MAP, knock) into a diagnostic scan tool port with hot-plug safety. IC Role / Device Role / Timing Role: 3-state bus buffer enabling safe insertion/removal of service tools without disrupting ECU operation. Use Value: Prevents bus contention during dealer diagnostics; maintains signal integrity with <10 ns propagation skew across all 8 channels. |
Use Scenario: Isolating MIPI CSI-2 parallel clock/data lines between image sensor and SoC during power-state transitions in surround-view systems. IC Role / Device Role / Timing Role: Low-skew buffer synchronizing clock and data lanes while suppressing crosstalk-induced jitter in 2-layer flex cables. Use Value: Reduces bit error rate in 100 Mbps video streams; meets ISO 10605 ESD immunity requirements for camera housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHC244PW-Q100 | CMOS-input thresholds (VIH = 3.85 V @ VCC = 5.5 V); lower ICC (4 μA typ) | Better suited for 3.3 V–5 V mixed-signal domains where input voltage matching is critical | Select when interfacing with CMOS microcontrollers or FPGAs requiring rail-to-rail input recognition |
| SN74LVC244APWRQ1 | Wider VCC range (1.65–3.6 V); LVTTL-compatible; no overvoltage tolerance | Optimized for low-voltage ADAS SoCs but incompatible with 5 V legacy buses | Choose only for new 3.3 V-only designs with strict power budget constraints and no 5 V interface requirement |
Compared with 74AHC244PW-Q100, the AHCT variant offers superior TTL-level compatibility for legacy automotive MCUs, while SN74LVC244APWRQ1 trades overvoltage tolerance for lower supply flexibility - making the 74AHCT244PW-Q100 optimal for brownfield ECU upgrades requiring 5 V bus interoperability.
Availability
74AHCT244PW-Q100 is available at Aetrix Electronics and suitable for body control modules, instrument clusters, powertrain sensor hubs, and ADAS camera interfaces requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for 74AHCT244PW-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 high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
This device belongs to Nexperia's AEC-Q100-qualified automotive logic portfolio, designed specifically for robust signal buffering and level translation 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 74AHCT244PW-Q100?
The 74AHCT244PW-Q100 is not a clocked device and has no defined maximum clock frequency. Its performance is characterized by propagation delay (tpd ≤ 9.5 ns at VCC = 5 V, CL = 50 pF) and enable/disable times (ten ≤ 14.5 ns, tdis ≤ 14.5 ns), making it suitable for asynchronous data routing up to ~50 MHz edge rates in well-terminated PCB traces.
Can 74AHCT244PW-Q100 operate with a 3.3 V supply?
No - the 74AHCT244PW-Q100 requires a minimum supply of 4.5 V per its recommended operating conditions. Using 3.3 V violates VIH specification (2.0 V min) and risks unreliable TTL-level recognition; for 3.3 V systems, select the 74AHC244PW-Q100 or SN74LVC244APWRQ1 instead.
Is the exposed pad on the TSSOP20 package electrically connected?
No - the exposed pad in the SOT360-1 (TSSOP20) package is not electrically connected to any internal node. Per Nexperia documentation, it may remain floating or be soldered to GND for thermal enhancement, but no electrical function is assigned to it.
How does the Schmitt-trigger input improve noise immunity in automotive environments?
Schmitt-trigger inputs provide ≥0.3 V hysteresis between VIH and VIL thresholds, preventing multiple output transitions caused by slow-rising or noisy signals (e.g., from long-wire door switches or unshielded sensor lines). This eliminates contact bounce artifacts and EMI-induced glitches without requiring external RC filtering.
74AHCT244PW-Q100,1 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:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- 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
74AHCT244PW-Q100,1 FAQ
1.How can I place an order for 74AHCT244PW-Q100,1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT244PW-Q100,1 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 74AHCT244PW-Q100,1 reliable?
The price and inventory of 74AHCT244PW-Q100,1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT244PW-Q100,1 is usually 5 days.
3.What payment methods are accepted for 74AHCT244PW-Q100,1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT244PW-Q100,1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT244PW-Q100,1?
74AHCT244PW-Q100,1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT244PW-Q100,1 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 74AHCT244PW-Q100,1?
For technical support, including 74AHCT244PW-Q100,1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT244PW-Q100,1 requirements.
6.How does Aetrix verify that 74AHCT244PW-Q100,1 is sourced from the original manufacturer or authorized distributors?
All 74AHCT244PW-Q100,1 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 74AHCT244PW-Q100,1 meets industry standards.
7.What is the process for return or replacement of 74AHCT244PW-Q100,1?
All 74AHCT244PW-Q100,1 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT244PW-Q100,1, 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 74AHCT244PW-Q100,1 part is unused and in its original packaging.
Return procedure for 74AHCT244PW-Q100,1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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