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onsemi NLV74HC244ADTR2G
- Part No.:
- NLV74HC244ADTR2G
- Manufacturer:
- onsemi
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
NLV74HC244ADTR2G.pdf
- Description:
- IC BUFFER NON-INVERT 6V 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,897
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Product details
Overview
NLV74HC244ADTR2G from onsemi is an octal 3-state noninverting buffer/line driver with two active-low output enables, designed for bus-oriented systems including memory address drivers and clock distribution. It operates from 2.0 V to 6.0 V, delivers ±7.8 mA output drive at 6.0 V, and features 15 LSTTL load drive capability. It is used in industrial control backplanes requiring level-shifting and bidirectional bus isolation.
For engineers reviewing the NLV74HC244ADTR2G datasheet, pinout, applications, or equivalent options, key selection criteria include supply voltage range (2.0–6.0 V), propagation delay (15 ns typical at 6.0 V), 3-state leakage (<10 µA), input compatibility with CMOS and LSTTL (with pullups), and TSSOP-20 package thermal performance (150 °C/W θJA).
Technical Context
The NLV74HC244ADTR2G implements dual-group 4-bit noninverting buffers with independent active-low output enables (Enable A on Pin 1, Enable B on Pin 19). Each group drives four outputs (YA1–YA4 and YB1–YB4) in true (noninverted) logic polarity when enabled, and enters high-impedance state when disabled.
It uses standard high-speed CMOS silicon technology with 136 FETs per die, supports rail-to-rail input voltage (0 to VCC), and guarantees operation across –55 °C to +125 °C. Input thresholds are CMOS-compatible (VIH = 3.15 V min at VCC = 4.5 V), and output drive meets LSTTL loading requirements without external buffering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Enables direct interface with 3.3 V and 5 V logic domains without level shifters. |
| Output Drive (IOH/IOL) | ±7.8 mA at VCC = 6.0 V - Sufficient to drive 15 LSTTL loads or terminate unterminated stubs on medium-length PCB traces. |
| Propagation Delay (tPLH/tPHL) | 15 ns max at VCC = 6.0 V - Supports reliable operation in 33 MHz synchronous bus systems with margin. |
| 3-State Leakage (IOZ) | 10 µA max at 125 °C - Ensures minimal current injection into disabled bus segments during hot-swap or partial power-down. |
| Input Capacitance (CIN) | 10 pF max - Reduces capacitive loading on upstream drivers, preserving signal edge rate in fanout-heavy configurations. |
| Operating Temperature | –55 °C to +125 °C - Qualified for under-hood automotive, industrial motor control, and outdoor telecom equipment. |
| ESD Rating (HBM) | >2000 V - Provides robust handling tolerance during manual assembly and board-level rework. |
Pinout & Package
TSSOP-20 wide-body package (Case 948E), 0.65 mm pitch, 6.5 mm × 4.4 mm footprint, 1.2 mm max height, Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | Enable A / Enable B | Active-low enables for Group A (YA1–YA4) and Group B (YB1–YB4); both must be low for output assertion. |
| 2, 4, 6, 8 | A1–A4 Inputs | Data inputs for YA1–YA4 outputs; noninverted pass-through when Enable A = low. |
| 11, 13, 15, 17 | B1–B4 Inputs | Data inputs for YB1–YB4 outputs; noninverted pass-through when Enable B = low. |
| 18, 16, 14, 12 | YA1–YA4 Outputs | Noninverting buffered outputs for A-group; high-impedance when Enable A = high. |
| 9, 7, 5, 3 | YB1–YB4 Outputs | Noninverting buffered outputs for B-group; high-impedance when Enable B = high. |
| 10 | GND | Ground reference for all I/O and internal logic; requires low-inductance connection to system ground plane. |
| 20 | VCC | Positive supply rail; bypass with 0.1 µF ceramic capacitor placed within 3 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| CMOS input compatibility | Accepts standard CMOS logic levels (VIH ≥ 70% VCC, VIL ≤ 30% VCC) across full voltage range - eliminates need for external biasing in mixed-voltage systems. |
| LSTTL load drive | 15 LSTTL loads per output - supports direct connection to legacy TTL peripherals without buffer amplification. |
| High noise immunity | Typical noise margin >1.5 V at VCC = 5 V - suppresses false triggering from EMI-coupled transients on shared PCB traces. |
| JEDEC Std. 7A compliance | Fully conforms to industry-standard timing, voltage, and interface definitions - ensures interoperability with other JEDEC-compliant 3-state devices. |
| Automotive qualification option | –Q suffix variant available AEC-Q100 qualified - supports use in engine control modules and body electronics where reliability is critical. |
Applications
| Industrial Backplane Bus Driver | Memory Address Buffer |
|---|---|
Use Scenario: Driving parallel address/data buses between microcontroller and SRAM/Flash in programmable logic controllers. IC Role / Device Role / Timing Role: Noninverting 3-state buffer isolating CPU address lines from multiple memory devices; enables time-multiplexed access via enable control. Use Value: Prevents bus contention during memory refresh cycles and allows clean signal integrity over 10 cm PCB traces at 25 MHz. |
Use Scenario: Buffering 16-bit address lines from FPGA to external DDR2 controller in test instrumentation hardware. IC Role / Device Role / Timing Role: Octal line driver providing fanout gain and impedance matching for address strobes and chip-select signals. Use Value: Delivers <15 ns propagation delay and <10 pF input capacitance to maintain setup/hold timing margins under 30 pF trace load. |
| Automotive CAN Gateway Interface | Legacy System Level Shifter |
Use Scenario: Isolating diagnostic communication lines between 3.3 V MCU and 5 V OBD-II transceiver in vehicle telematics units. IC Role / Device Role / Timing Role: Bidirectional level translator using separate enable groups for TX/RX paths; prevents ground loop coupling. Use Value: Operates reliably at 125 °C ambient and supports 500 kbps CAN FD signaling with <20 ns total path delay (enable + propagation). |
Use Scenario: Interfacing modern low-voltage microcontrollers to legacy 5 V peripheral ICs in factory automation HMIs. IC Role / Device Role / Timing Role: Unidirectional voltage translator with CMOS input thresholds and TTL-compatible output swing. Use Value: Eliminates discrete resistor-divider networks while maintaining <10 ns additional skew versus direct connection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state noninverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC74HC244ADTR2G | Same logic function, identical pinout, but rated only to +85 °C industrial temp range. | Not qualified for automotive under-hood use; unsuitable for systems requiring extended temperature operation. | Select when cost sensitivity outweighs extended temperature needs and AEC-Q100 is not mandated. |
| SN74HC244PWR | Texas Instruments part in TSSOP-20; VIH/VIL thresholds tighter at 2.0 V supply (VIH = 1.5 V min), but higher CIN (12 pF). | Slightly better noise margin at low VCC, but increased capacitive loading may degrade edge rate in high-fanout layouts. | Prefer when interfacing sub-2.5 V logic families or when TI's supply chain continuity is prioritized. |
Compared with MC74HC244ADTR2G and SN74HC244PWR, the NLV74HC244ADTR2G provides guaranteed operation to +125 °C and lower 3-state leakage (10 µA vs. 20 µA at 125 °C), making it optimal for thermally constrained automotive and industrial environments where bus leakage must be minimized during sleep modes.
Availability
NLV74HC244ADTR2G is available at Aetrix Electronics and suitable for industrial backplane bus drivers, automotive CAN gateway interfaces, and legacy system level shifters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NLV74HC244ADTR2G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, sensor, and logic solutions for automotive, industrial, and cloud infrastructure markets.
The NLV74HC244ADTR2G belongs to onsemi's high-reliability HC logic family, engineered for robust operation in harsh environments including automotive engine compartments and industrial motor drives.
FAQ
What is the maximum operating temperature for NLV74HC244ADTR2G?
The NLV74HC244ADTR2G is fully specified from –55 °C to +125 °C, with all DC and AC parameters guaranteed across this full range. This makes it suitable for under-hood automotive applications and high-temperature industrial enclosures where standard HC variants (rated to +85 °C) would fail.
Does NLV74HC244ADTR2G support 3.3 V logic systems?
Yes, NLV74HC244ADTR2G operates down to 2.0 V supply and is fully compatible with 3.3 V logic. At VCC = 3.3 V, its VIH is 2.1 V min and VIL is 0.9 V max, ensuring reliable recognition of standard 3.3 V CMOS levels without external level shifting.
Can NLV74HC244ADTR2G replace MC74HC244ADTR2G in existing designs?
Yes - NLV74HC244ADTR2G shares identical pinout, logic function, and electrical characteristics with MC74HC244ADTR2G, but adds extended temperature rating (–55 °C to +125 °C vs. –40 °C to +85 °C) and tighter leakage specs. No PCB or firmware changes are required for drop-in replacement in thermally demanding applications.
What is the recommended bypass capacitor for NLV74HC244ADTR2G?
A 0.1 µF X7R ceramic capacitor placed within 3 mm of Pin 20 (VCC) and Pin 10 (GND) is recommended. For systems with high di/dt switching (e.g., >10 outputs toggling simultaneously), add a 4.7 µF tantalum or polymer capacitor near the device to suppress low-frequency supply droop.
How does the dual-enable architecture of NLV74HC244ADTR2G improve system design?
The separate Enable A (Pin 1) and Enable B (Pin 19) allow independent control of two 4-bit data groups. This enables time-multiplexed bus sharing, selective peripheral isolation, and reduced contention risk - for example, enabling only memory address lines while holding data lines in high-Z during write cycles in NLV74HC244ADTR2G-based systems.
NLV74HC244ADTR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP
NLV74HC244ADTR2G FAQ
1.How can I place an order for NLV74HC244ADTR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NLV74HC244ADTR2G 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 NLV74HC244ADTR2G reliable?
The price and inventory of NLV74HC244ADTR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NLV74HC244ADTR2G is usually 5 days.
3.What payment methods are accepted for NLV74HC244ADTR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NLV74HC244ADTR2G transactions.
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4.How is shipping managed for NLV74HC244ADTR2G?
NLV74HC244ADTR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NLV74HC244ADTR2G 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 NLV74HC244ADTR2G?
For technical support, including NLV74HC244ADTR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NLV74HC244ADTR2G requirements.
6.How does Aetrix verify that NLV74HC244ADTR2G is sourced from the original manufacturer or authorized distributors?
All NLV74HC244ADTR2G 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 NLV74HC244ADTR2G meets industry standards.
7.What is the process for return or replacement of NLV74HC244ADTR2G?
All NLV74HC244ADTR2G units undergo pre-shipment inspection (PSI). If there is an issue with NLV74HC244ADTR2G, 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 NLV74HC244ADTR2G part is unused and in its original packaging.
Return procedure for NLV74HC244ADTR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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