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Nexperia USA Inc. 74AHC244D-Q100,118
- Part No.:
- 74AHC244D-Q100,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
74AHC244D-Q100,118.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 20SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
74AHC244D-Q100 from Nexperia is an automotive-qualified octal 3-state buffer/line driver in SO20 package, supporting dual 4-bit or single 8-bit operation with two independent active-low output enables (1OE, 2OE), 2.0–5.5 V supply range, and overvoltage-tolerant inputs up to 5.5 V - used for bidirectional bus interfacing and voltage-level translation in automotive body control modules.
For engineers reviewing the 74AHC244D-Q100 datasheet, 74AHC244D-Q100 pinout, 74AHC244D-Q100 application, or 74AHC244D-Q100 equivalent, this page delivers verified functional architecture, AEC-Q100 Grade 1 thermal validation (−40 °C to +125 °C), propagation delay specs at 3.3 V/5 V, SO20 mechanical dimensions, and direct substitution guidance against industry-standard octal buffers.
Technical Context
This device implements two independent 4-bit non-inverting buffer sections, each controlled by a dedicated active-low output enable (1OE for Y0–Y3, 2OE for Y0–Y3 of second group). Inputs feature Schmitt-trigger action for noise immunity and tolerate voltages up to 5.5 V regardless of VCC level, enabling mixed-voltage domain interfacing between 3.3 V logic and 5 V peripherals.
It operates across full automotive temperature range (−40 °C to +125 °C) with CMOS-level input thresholds (VIH = 3.85 V min at VCC = 5.5 V) and delivers typical propagation delays of 3.4 ns (VCC = 5 V, CL = 15 pF) and 5.0 ns (VCC = 3.3 V, CL = 50 pF), with enable/disable times under 10 ns across all conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - supports direct interface with 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Operating Temperature | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| Propagation Delay (tpd) | 3.4 ns max at VCC = 5 V, CL = 15 pF - ensures timing-critical bus buffering in high-speed automotive serial interfaces. |
| Input Overvoltage Tolerance | Up to 5.5 V - allows safe connection to 5 V buses while powered from 3.3 V, eliminating external clamping diodes. |
| Output Drive Strength | ±8 mA at VCC = 4.5 V - sufficient to drive 50 pF loads across PCB traces and multiple gate inputs in distributed ECUs. |
| Power Dissipation (CPD) | 10 pF - enables accurate dynamic power estimation (PD = CPD × VCC² × fi) for thermal budgeting in sealed modules. |
| ESD Robustness | HBM > 2000 V, CDM > 1000 V - meets automotive ESD immunity requirements for assembly and field operation. |
Pinout & Package
74AHC244D-Q100 uses the SO20 (SOT163-1) plastic small outline package: 20-pin, 7.5 mm body width, 1.27 mm pitch, with gull-wing leads suitable for reflow and wave soldering. Pin 1 index located at top-left corner with notch marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enable controls four outputs each; both must be LOW for respective Y-group to drive. |
| 2, 4, 6, 8 | 1A0–1A3 | First 4-bit input group - connects to upstream data source (e.g., microcontroller port). |
| 17, 15, 13, 11 | 2A0–2A3 | Second 4-bit input group - enables independent buffering of parallel signals like sensor clusters. |
| 18, 16, 14, 12 | 1Y0–1Y3 | 3-state outputs for first group - driven only when 1OE = LOW; high-Z otherwise. |
| 3, 5, 7, 9 | 2Y0–2Y3 | 3-state outputs for second group - isolated from 1Y group, allowing separate bus segments. |
| 10 | GND | Reference ground plane - requires low-inductance connection to minimize switching noise coupling. |
| 20 | VCC | Primary supply rail - decoupling capacitor (100 nF ceramic) required within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation with lifetime reliability testing per automotive stress standards. |
| Dual independent 4-bit control | Enables selective activation of two bus segments (e.g., CAN transceiver side vs. MCU side) using separate OE pins. |
| Schmitt-trigger inputs | Provides 0.9 V hysteresis at VCC = 3 V - rejects noise on long harness lines in vehicle networks. |
| Overvoltage-tolerant inputs | Accepts 5.5 V signals while VCC = 3.3 V - eliminates need for external level translators in mixed-supply ECUs. |
| Low dynamic power (CPD = 10 pF) | Reduces switching current draw in always-on modules (e.g., gateway wake-up circuits) without sacrificing speed. |
Applications
| Automotive Body Control Unit (BCU) | Instrument Cluster Display Interface |
|---|---|
|
Use Scenario: Isolating microcontroller GPIOs from high-capacitance LIN bus transceivers and lamp drivers. IC Role / Device Role: Bidirectional 3-state buffer enabling MCU to drive or monitor shared bus lines without contention. Use Value: Prevents signal corruption during hot-plug events and reduces EMI via controlled output slew rates. |
Use Scenario: Level-shifting SPI clock/data between 3.3 V display controller and 5 V backlight driver IC. IC Role / Device Role: Voltage-translating buffer with overvoltage-tolerant inputs preserving signal integrity. Use Value: Eliminates discrete MOSFET translators, saving board space and BOM cost in space-constrained clusters. |
| ADAS Camera Module Interface | Electric Power Steering (EPS) Motor Control Board |
|
Use Scenario: Buffering parallel pixel data from image sensor to SoC while meeting automotive EMC limits. IC Role / Device Role: Low-noise, high-speed octal driver with balanced propagation delays across all channels. Use Value: Ensures skew < 1 ns between data bits, preventing frame misalignment in 12-bit raw sensor streams. |
Use Scenario: Isolating MCU PWM outputs from gate drivers in motor phase control circuitry. IC Role / Device Role: 3-state buffer enabling safe dead-time insertion and fault-induced shutdown sequencing. Use Value: Prevents shoot-through during power stage transitions by enforcing strict output disable timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT244D-Q100 | TTL-compatible inputs (VIH = 2.0 V min), identical pinout and timing at 5 V supply. | Better suited for legacy 5 V-only systems where input thresholds must match TTL logic families. | Select when interfacing with older automotive MCUs or ASICs requiring TTL-level recognition. |
| SN74LVC244AQPWRQ1 | Lower VCC range (1.65–3.6 V), higher drive (±24 mA), but no overvoltage tolerance beyond VCC + 0.3 V. | Optimized for low-voltage domains only; unsuitable for mixed 3.3 V/5 V bus translation. | Choose only for pure 3.3 V designs needing higher sink/source capability and smaller TSSOP package. |
Compared with 74AHCT244D-Q100, the 74AHC244D-Q100 provides superior mixed-voltage flexibility due to overvoltage-tolerant inputs, while SN74LVC244AQPWRQ1 trades voltage range for higher drive strength and lower static current - making the AHC variant optimal for heterogeneous voltage architectures common in modern ECUs.
Availability
74AHC244D-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, instrument cluster interfaces, ADAS camera modules, and electric power steering control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHC244D-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 logic, analog, and MOSFET solutions optimized for automotive, industrial, and mobile markets.
The 74AHC244D-Q100 belongs to Nexperia's automotive-qualified AHC logic family, engineered specifically for robust signal integrity, wide supply tolerance, and seamless integration into safety-critical vehicle subsystems.
FAQ
What is the maximum input voltage the 74AHC244D-Q100 can safely accept?
The device accepts input voltages up to 5.5 V regardless of VCC level, confirmed by datasheet Section 7 (Limiting Values) and Section 5.2 (Pin Description). This overvoltage tolerance enables direct connection to 5 V buses while operating from 3.3 V, eliminating external protection components in mixed-voltage automotive interfaces.
Does the 74AHC244D-Q100 support hot-swap or live-insertion scenarios?
Yes - its overvoltage-tolerant inputs and high-impedance 3-state outputs allow safe insertion into powered systems. When both OE pins are HIGH, all outputs enter high-Z mode, preventing bus contention. Input clamping current is limited to ±20 mA (Section 7), ensuring robustness during transient overvoltage events during hot-plug.
How does the propagation delay vary between 3.3 V and 5 V supply operation?
At VCC = 3.3 V and CL = 50 pF, tpd is 7.5 ns max; at VCC = 5 V and same load, it drops to 5.0 ns max (Section 10, Table 7). This inverse relationship reflects CMOS switching speed dependence on supply voltage, enabling tighter timing margins in 5 V domains while maintaining compatibility with 3.3 V systems.
Can 1OE and 2OE be tied together for single 8-bit operation?
Yes - connecting 1OE and 2OE simplifies control to one enable signal, converting the device into an 8-bit buffer. The functional diagram (Fig. 1) and truth table (Table 3) confirm identical behavior per group, and no electrical conflict arises since both are active-low inputs sharing the same logic function and voltage thresholds.
74AHC244D-Q100,118 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:
- 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:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SO
74AHC244D-Q100,118 FAQ
1.How can I place an order for 74AHC244D-Q100,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC244D-Q100,118 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 74AHC244D-Q100,118 reliable?
The price and inventory of 74AHC244D-Q100,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC244D-Q100,118 is usually 5 days.
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Once your 74AHC244D-Q100,118 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 74AHC244D-Q100,118?
For technical support, including 74AHC244D-Q100,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC244D-Q100,118 requirements.
6.How does Aetrix verify that 74AHC244D-Q100,118 is sourced from the original manufacturer or authorized distributors?
All 74AHC244D-Q100,118 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 74AHC244D-Q100,118 meets industry standards.
7.What is the process for return or replacement of 74AHC244D-Q100,118?
All 74AHC244D-Q100,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC244D-Q100,118, 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 74AHC244D-Q100,118 part is unused and in its original packaging.
Return procedure for 74AHC244D-Q100,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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