My Inquiry
My Account
Texas Instruments SN74LVC244AQPWRQ1
- Part No.:
- SN74LVC244AQPWRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC244AQPWRQ1.pdf
- Description:
- IC BUF NON-INVERT 3.6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,991
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVC244AQPWRQ1 from Texas Instruments is an automotive-qualified octal 3-state buffer/driver IC designed for asynchronous bus interfacing in 1.65V–3.6V systems. It features dual 4-bit banks, 5.9ns max propagation delay at 3.3V, 5.5V-tolerant inputs, and operation from –40°C to +125°C - enabling robust signal isolation and level translation in automotive body control modules.
For engineers reviewing the SN74LVC244AQPWRQ1 datasheet, SN74LVC244AQPWRQ1 pinout, SN74LVC244AQPWRQ1 application, or SN74LVC244AQPWRQ1 equivalent, key selection criteria include its Ioff-enabled live insertion support, balanced CMOS output drive (±24mA at 3V), mixed-mode 5V-input/3.3V-VCC compatibility, and AEC-Q100 Grade 1 qualification for under-hood electronics.
Technical Context
The SN74LVC244AQPWRQ1 implements two independent 4-bit noninverting buffer banks, each controlled by a dedicated active-low output enable (xOE) input. Its CMOS architecture delivers symmetrical high- and low-side drive strength, with specified VOH/VOL performance across 1.65V–3.6V VCC and full temperature range.
Each bank supports true 3-state operation with Ioff circuitry that disables current flow during partial power-down, preventing back-drive and enabling hot-plug capability. Input overvoltage tolerance up to 5.5V allows safe interfacing with legacy 5V logic while powered from 3.3V rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 3.6V - enables direct integration into modern low-voltage automotive domains without level shifters. |
| Input Voltage Tolerance | Up to 5.5V - permits reliable connection to 5V microcontrollers or sensors without external clamping. |
| Max Propagation Delay | 5.9ns at 3.3V - supports high-speed data transfer on PCB traces up to 12cm without signal integrity degradation. |
| Output Drive Strength | ±24mA at VCC = 3V - drives moderate capacitive loads and longer traces while maintaining clean edges. |
| Operating Temperature | –40°C to +125°C - qualified for engine bay and powertrain applications per AEC-Q100 Grade 1. |
| Ioff Current | <±10µA at 125°C - ensures zero-current path during power sequencing, critical for live insertion in modular ECUs. |
| ESD Rating | ±2000V HBM - meets automotive ESD immunity requirements for assembly and field operation. |
Pinout & Package
TSSOP-20 (PW) package: 6.50mm × 6.4mm body, 0.65mm pitch, surface-mount, thermally enhanced with exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE | Active-low output enable | Independently controls 4-output banks; tied to VCC via pull-up for power-up high-Z safety. |
| 1A1–1A4, 2A1–2A4 | Buffer input | Noninverting inputs accepting 0–5.5V; compatible with 5V logic driving 3.3V domain. |
| 1Y1–1Y4, 2Y1–2Y4 | 3-state buffered output | CMOS outputs with balanced sourcing/sinking; enter high-Z when OE = high. |
| VCC (Pin 20) | Supply voltage | 1.65–3.6V core rail; requires local 0.1µF bypass capacitor adjacent to pin. |
| GND (Pin 10) | Ground reference | Common return for all signals and supply; must connect to low-impedance ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from –40°C to +125°C ambient, including reliability stress testing. |
| Mixed-mode signal operation | 5V-tolerant inputs operate correctly with 3.3V VCC - eliminates need for external level translators. |
| Ioff partial-power-down protection | Blocks current flow between powered/unpowered sections - enables safe hot-swap of modules. |
| Balanced CMOS 3-state outputs | Symmetrical ±24mA drive at 3V ensures consistent rise/fall times and reduced ground bounce (VOLP < 0.8V). |
| Low dynamic power consumption | 44pF typical Cpd per buffer at 3.3V - minimizes switching noise and system-level power draw. |
Applications
| Automotive Body Control Module | Instrument Cluster Interface |
|---|---|
Use Scenario: Isolating CAN/LIN transceiver enable lines and sensor status signals within a centralized body controller. IC Role / Device Role / Timing Role: Octal buffer providing galvanic separation and drive strength for multiple low-speed digital control paths. Use Value: Enables single-chip consolidation of eight discrete enable signals while maintaining AEC-Q100 compliance and thermal stability. |
Use Scenario: Level-shifting display driver control signals from a 5V MCU to a 3.3V TFT timing controller in a digital instrument cluster. IC Role / Device Role / Timing Role: Noninverting voltage-tolerant buffer ensuring signal integrity across mixed-supply domains. Use Value: Eliminates external resistive dividers or dedicated level shifters, reducing BOM count and layout area. |
| ADAS Camera Power Sequencing | Electric Power Steering (EPS) ECU |
Use Scenario: Enabling synchronized power-on reset sequencing for multiple camera sensor modules using shared "power good" signals. IC Role / Device Role / Timing Role: Wired-OR combiner for aggregated power-status indicators feeding a central PMIC. Use Value: Provides deterministic high-Z state during startup, preventing false assertions and ensuring clean boot sequence. |
Use Scenario: Driving diagnostic LED indicators and motor gate driver enable lines in a safety-critical EPS control unit. IC Role / Device Role / Timing Role: Robust 3-state buffer with Ioff support for fault-isolation during partial ECU shutdown. Use Value: Guarantees no back-drive into powered subsystems during limp-home mode, meeting ISO 26262 ASIL-B requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC244APWRE4 | Commercial-grade (–40°C to +85°C), same pinout and electrical specs but lacks AEC-Q100 qualification. | Not suitable for under-hood or safety-critical automotive functions; limited to cabin infotainment or non-safety modules. | Select only for cost-sensitive non-automotive or interior-only applications where extended temperature is not required. |
| SN74LVCH244AQPWRQ1 | Includes bus-hold circuitry on all inputs; otherwise identical voltage, timing, and temperature specs. | Eliminates need for external pull-up/down resistors on unused or floating inputs - reduces component count in sparse-bus designs. | Prefer when input signal integrity is compromised by long traces or intermittent connections; adds ~$0.05 cost. |
Compared with SN74LVC244APWRE4 and SN74LVCH244AQPWRQ1, the SN74LVC244AQPWRQ1 uniquely delivers AEC-Q100 Grade 1 compliance without bus-hold overhead - making it the optimal choice for cost-constrained, thermally demanding automotive control nodes requiring guaranteed reliability and minimal external components.
Availability
SN74LVC244AQPWRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, ADAS camera power sequencing, and electric power steering ECUs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC244AQPWRQ1 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and automotive ICs, with decades of automotive qualification expertise and broad manufacturing scale.
The SN74LVC244AQPWRQ1 belongs to TI's LVC logic family - engineered specifically for low-voltage, high-speed, automotive-grade bus interface applications requiring robustness, mixed-voltage compatibility, and AEC-Q100 compliance.
FAQ
What is the maximum operating temperature for SN74LVC244AQPWRQ1?
The SN74LVC244AQPWRQ1 is rated for continuous operation from –40°C to +125°C ambient temperature, fully qualified per AEC-Q100 Grade 1 standards. This specification applies to all package variants including the TSSOP-20 (PW) used in the SN74LVC244AQPWRQ1, and is validated across electrical parameters including propagation delay, VOH/VOL, and Ioff leakage.
Does SN74LVC244AQPWRQ1 support 5V input signals while powered at 3.3V?
Yes, SN74LVC244AQPWRQ1 supports input voltages up to 5.5V regardless of VCC level - enabling direct interfacing with 5V microcontrollers or sensors while operating from a 3.3V supply. This mixed-mode capability is explicitly characterized in the Recommended Operating Conditions table and does not require external clamping diodes or level shifters.
How does the Ioff feature function in SN74LVC244AQPWRQ1?
The Ioff feature in SN74LVC244AQPWRQ1 disables current flow through the device when VCC = 0V, preventing back-drive from live buses into unpowered sections. Measured at <±10µA across temperature, this function enables safe live insertion and partial power-down in modular automotive ECUs - a requirement verified during AEC-Q100 stress testing.
What is the recommended bypass capacitor for SN74LVC244AQPWRQ1?
A 0.1µF ceramic capacitor placed as close as possible to the VCC (Pin 20) and GND (Pin 10) terminals is the minimum recommended bypass solution for SN74LVC244AQPWRQ1. TI's layout guidelines specify short, wide traces to ground and co-location on the same PCB side - with optional parallel 1µF capacitance for broadband noise suppression in noisy automotive environments.
Is SN74LVC244AQPWRQ1 pin-compatible with standard SN74LVC244A variants?
Yes, SN74LVC244AQPWRQ1 uses the same TSSOP-20 (PW) package footprint and pinout as commercial SN74LVC244APWRE4 and SN74LVC244APWR, including identical VCC (Pin 20), GND (Pin 10), and dual 4-bit buffer mapping. Mechanical compatibility is confirmed in TI's Packaging Information document SCAS790D, enabling drop-in replacement in existing layouts where automotive qualification is added.
SN74LVC244AQPWRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
SN74LVC244AQPWRQ1 FAQ
1.How can I place an order for SN74LVC244AQPWRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC244AQPWRQ1 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 SN74LVC244AQPWRQ1 reliable?
The price and inventory of SN74LVC244AQPWRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC244AQPWRQ1 is usually 5 days.
3.What payment methods are accepted for SN74LVC244AQPWRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC244AQPWRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC244AQPWRQ1?
SN74LVC244AQPWRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC244AQPWRQ1 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 SN74LVC244AQPWRQ1?
For technical support, including SN74LVC244AQPWRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC244AQPWRQ1 requirements.
6.How does Aetrix verify that SN74LVC244AQPWRQ1 is sourced from the original manufacturer or authorized distributors?
All SN74LVC244AQPWRQ1 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 SN74LVC244AQPWRQ1 meets industry standards.
7.What is the process for return or replacement of SN74LVC244AQPWRQ1?
All SN74LVC244AQPWRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC244AQPWRQ1, 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 SN74LVC244AQPWRQ1 part is unused and in its original packaging.
Return procedure for SN74LVC244AQPWRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVC244AQPWRQ1 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…
