My Inquiry
My Account
Nexperia USA Inc. 74AHCT244BQ-Q100,1
- Part No.:
- 74AHCT244BQ-Q100,1
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 20-VFQFN Exposed Pad
- Datasheet:
-
74AHCT244BQ-Q100,1.pdf
- Description:
- IC BUF NON-INVERT 5.5V 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,674
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74AHCT244BQ-Q100 from Nexperia is an automotive-grade octal 3-state buffer/line driver in DHVQFN20 package, supporting dual 4-bit or single 8-bit operation with two independent active-low output enables (1OE, 2OE), TTL-compatible inputs (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), and overvoltage-tolerant inputs up to 5.5 V - used for bidirectional bus interfacing in automotive body control modules.
For engineers reviewing the 74AHCT244BQ-Q100 datasheet, 74AHCT244BQ-Q100 pinout, 74AHCT244BQ-Q100 application, or 74AHCT244BQ-Q100 equivalent, this device is selected for mixed-voltage signal translation, ECU I/O expansion, and noise-immune data routing where AEC-Q100 Grade 1 qualification (-40 °C to +125 °C), balanced propagation delay (tpd ≤ 10.5 ns @ VCC = 5 V, CL = 50 pF), and Schmitt-trigger input hysteresis are critical.
Technical Context
This device implements two independent 4-bit non-inverting buffer sections, each controlled by its own active-low output enable (1OE for Y0–Y3, 2OE for Y0–Y3 of second group). Inputs accept TTL logic levels and tolerate up to 5.5 V regardless of VCC, enabling safe interfacing between 3.3 V and 5 V domains without level shifters.
Each output drives up to ±8 mA at VCC = 4.5 V and enters high-impedance state within tdis ≤ 14.5 ns (max) when its enable is deasserted. Static characteristics include VIH = 2.0 V (min), VOL = 0.55 V (max at IO = 8 mA), and ICC ≤ 80 μA (max at VCC = 5.5 V), ensuring low static power in always-on automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Type | Octal non-inverting 3-state buffer with dual output enables - supports flexible bus arbitration and load isolation. |
| Supply Voltage Range | 4.5 V to 5.5 V - compatible with standard 5 V automotive rails and tolerant of transient overvoltage. |
| Input Logic Level | TTL-compatible (VIH ≥ 2.0 V, VIL ≤ 0.8 V) - ensures reliable recognition of legacy 5 V controller outputs. |
| Propagation Delay | ≤ 10.5 ns (max, VCC = 5 V, CL = 50 pF) - enables timing-critical data latching in CAN/LIN peripheral interfaces. |
| Output Drive Strength | ±8 mA (min) at VOH/VOL - sufficient to drive multiple CMOS inputs or short PCB traces without external buffering. |
| Operating Temperature | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| ESD Robustness | HBM > 2000 V, CDM > 1000 V - withstands handling and board-level electrostatic events in automotive manufacturing. |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 × 4.5 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection, thermal-enhanced construction, no leads, 20-terminal quad flat layout with exposed thermal pad (non-electrical, floating or GND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output enables - independently disable Group 1 (Y0–Y3) or Group 2 (Y0–Y3) to isolate bus segments. |
| 2, 4, 6, 8 | 1A0–1A3 | Group 1 data inputs - connect to microcontroller port pins or sensor interface lines. |
| 11, 13, 15, 17 | 2A0–2A3 | Group 2 data inputs - support parallel connection to secondary MCU or diagnostic bus. |
| 12, 14, 16, 18 | 1Y0–1Y3 | Group 1 true outputs - drive downstream loads with 3-state capability for bus sharing. |
| 3, 5, 7, 9 | 2Y0–2Y3 | Group 2 true outputs - provide isolated signal paths for redundant or auxiliary functions. |
| 10 | GND | Ground reference (0 V) - mandatory return path for all internal logic and output current. |
| 20 | VCC | Positive supply (4.5–5.5 V) - powers internal circuitry and defines output voltage swing. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across -40 °C to +125 °C ambient, including lifetime reliability testing per stress test conditions. |
| Overvoltage-tolerant inputs | Accept up to 5.5 V regardless of VCC - eliminates need for external clamping diodes when interfacing higher-voltage sensors. |
| Schmitt-trigger inputs | Hysteresis on all inputs - rejects noise on slow-rising signals (e.g., switch debouncing, LIN bus wake-up pulses). |
| Dual independent 3-state control | Two OE pins allow selective activation of either 4-bit group - essential for time-multiplexed bus access in multi-ECU systems. |
| Low dynamic power dissipation | CPD = 12 pF - limits switching current and heat generation in high-frequency data routing (e.g., SPI slave expansion). |
Applications
| Body Control Module (BCM) | Instrument Cluster Interface |
|---|---|
Use Scenario: Isolating and buffering I/O signals between 32-bit MCU and door/window actuator drivers in a centralized BCM. IC Role / Device Role / Timing Role: Bidirectional bus buffer with independent OE control - manages shared LIN/UART lines while preventing contention during firmware updates. Use Value: Enables hot-swap-safe peripheral addition via 3-state outputs and withstands automotive transients due to 5.5 V input tolerance and AEC-Q100 validation. |
Use Scenario: Translating and driving analog/digital signals from gauge MCU to display driver IC in digital instrument clusters. IC Role / Device Role / Timing Role: Level-shifting buffer - accepts 3.3 V MCU outputs and drives 5 V display logic with TTL-compatible thresholds and fast 10.5 ns propagation. Use Value: Eliminates discrete level shifters; Schmitt-trigger inputs suppress EMI-induced glitches on long ribbon cables between cluster subassemblies. |
| Power Distribution Unit (PDU) | OBD-II Diagnostic Port Interface |
Use Scenario: Expanding GPIO count of main PDU controller to monitor 16+ fuse status lines and relay feedback signals. IC Role / Device Role / Timing Role: Input multiplexer buffer - aggregates fault signals with 3-state isolation to prevent backfeeding into MCU during reset sequences. Use Value: Dual OE allows staggered sampling of fuse banks; -40 °C to +125 °C rating ensures operation near battery junction boxes. |
Use Scenario: Interfacing vehicle's internal diagnostic bus (ISO 9141/K-line) to external scan tools via standardized OBD-II connector. IC Role / Device Role / Timing Role: Signal conditioner and driver - buffers K-line pull-up/pull-down signals while providing ESD protection and noise immunity. Use Value: HBM > 2000 V and CDM > 1000 V meet ISO 10605 requirements; overvoltage tolerance prevents damage from accidental 12 V contact. |
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 |
|---|---|---|---|
| 74AHC244BQ-Q100 | CMOS-input version (VIH = 3.85 V min at VCC = 5.5 V); lower ICC (4 μA typ vs. 40 μA typ at VCC = 5.5 V) | Better suited for 3.3 V–5 V mixed systems where input sources are CMOS, not TTL | Select when driving from 3.3 V MCUs with rail-to-rail outputs; avoid if interfacing legacy 5 V TTL logic. |
| SN74LVC244AQDRQ1 | Wider VCC range (1.65–3.6 V); LVTTL-compatible; smaller 20-pin TSSOP package (SOT360-1) | Optimized for low-voltage ECUs (e.g., ADAS cameras); lacks 5.5 V input tolerance | Choose for 3.3 V-only domains requiring lower static power and smaller footprint; not drop-in for 5 V bus translation. |
Compared with 74AHC244BQ-Q100 and SN74LVC244AQDRQ1, the 74AHCT244BQ-Q100 uniquely bridges 5 V TTL logic to modern 5 V automotive buses while maintaining AEC-Q100 Grade 1 compliance and robust input overvoltage tolerance - making it irreplaceable in legacy-compatible ECU designs.
Availability
74AHCT244BQ-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, power distribution units, and OBD-II diagnostic port interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCT244BQ-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, with deep expertise in automotive qualification and industrial-grade packaging.
The 74AHCT244-Q100 series belongs to Nexperia's automotive-qualified logic portfolio, designed specifically for robust signal buffering and voltage-domain interfacing in harsh-temperature automotive subsystems.
FAQ
Is the 74AHCT244BQ-Q100 pin-compatible with the 74AHC244BQ-Q100?
Yes - both share identical DHVQFN20 (SOT764-1) pinout, terminal numbering, and functional block diagram. The only differences are input threshold specifications (TTL vs. CMOS) and static current draw; no PCB redesign is needed when swapping between them in existing layouts.
Can the 74AHCT244BQ-Q100 operate with a 3.3 V supply?
No - the 74AHCT244BQ-Q100 is specified only for VCC = 4.5 V to 5.5 V per Table 5. At 3.3 V, VIH (2.0 V min) would be violated relative to VCC, risking unreliable HIGH-level recognition; use 74LVC244AQDRQ1 instead for 3.3 V operation.
What is the function of the exposed thermal pad on the DHVQFN20 package?
The exposed pad (terminal 1 index area) has no electrical function per datasheet Note (1). It may remain floating or be connected to GND for improved thermal conduction - but must never be tied to VCC or left unconnected in high-reliability automotive assemblies without thermal simulation validation.
Does the 74AHCT244BQ-Q100 support hot insertion or live bus connection?
It supports partial live insertion due to overvoltage-tolerant inputs (up to 5.5 V) and high-impedance outputs when OE is HIGH, but full hot-plug capability requires external series resistors and slew-rate limiting per ISO 11898-2. The device itself does not include bus-fault protection or current limiting.
74AHCT244BQ-Q100,1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 20-VFQFN Exposed Pad
- 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-DHVQFN (4.5x2.5)
74AHCT244BQ-Q100,1 FAQ
1.How can I place an order for 74AHCT244BQ-Q100,1 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT244BQ-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 74AHCT244BQ-Q100,1 reliable?
The price and inventory of 74AHCT244BQ-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 74AHCT244BQ-Q100,1 is usually 5 days.
3.What payment methods are accepted for 74AHCT244BQ-Q100,1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT244BQ-Q100,1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT244BQ-Q100,1?
74AHCT244BQ-Q100,1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT244BQ-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 74AHCT244BQ-Q100,1?
For technical support, including 74AHCT244BQ-Q100,1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT244BQ-Q100,1 requirements.
6.How does Aetrix verify that 74AHCT244BQ-Q100,1 is sourced from the original manufacturer or authorized distributors?
All 74AHCT244BQ-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 74AHCT244BQ-Q100,1 meets industry standards.
7.What is the process for return or replacement of 74AHCT244BQ-Q100,1?
All 74AHCT244BQ-Q100,1 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT244BQ-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 74AHCT244BQ-Q100,1 part is unused and in its original packaging.
Return procedure for 74AHCT244BQ-Q100,1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHCT244BQ-Q100,1 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
