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onsemi NLV74HC245ADWR2G
- Part No.:
- NLV74HC245ADWR2G
- Manufacturer:
- onsemi
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
NLV74HC245ADWR2G.pdf
- Description:
- IC TXRX NON-INVERT 6V 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,830
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Product details
Overview
NLV74HC245ADWR2G from onsemi is an octal 3-state noninverting bus transceiver in SOIC-20 wide package, operating from 2.0 V to 6.0 V supply, with 15 LSTTL load drive capability, propagation delay as low as 13 ns at 6.0 V, and bidirectional data flow controlled by Direction and active-low Output Enable pins. It enables asynchronous 2-way communication between data buses in industrial control backplanes and legacy microprocessor system expansion interfaces.
For engineers reviewing the NLV74HC245ADWR2G datasheet, pinout, applications, or equivalent options, key selection considerations include its HC logic family voltage range (2.0–6.0 V), guaranteed 125°C operation, SOIC-20 wide mechanical footprint (12.8 mm × 7.5 mm), and compatibility with CMOS/NMOS/TTL bus standards without level-shifting circuitry.
Technical Context
The NLV74HC245ADWR2G implements a dual 8-bit bidirectional data path with independent 3-state control per port. Its Direction input selects A→B or B→A data flow, while the active-low Output Enable places both ports into high-impedance state simultaneously.
It uses high-performance silicon-gate CMOS technology with 308 FETs (77 equivalent gates), delivering rail-to-rail output swing, ±10 µA max input leakage at 6.0 V, and 15 pF max 3-state I/O capacitance - enabling clean signal integrity in noise-sensitive bus environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports direct interface with 3.3 V and 5 V logic domains without external regulators |
| Propagation Delay (A↔B) | 13 ns max at VCC = 6.0 V - enables reliable timing in 30+ MHz bus systems |
| Output Drive Strength | 15 LSTTL loads - sufficient to drive multiple legacy TTL inputs on shared bus lines |
| Operating Temperature | −55°C to +125°C - qualified for extended industrial and under-hood automotive applications |
| Input Leakage Current | ±1.0 µA max at 125°C - ensures stable logic levels with high-impedance pull-ups or open-bus conditions |
| 3-State Leakage Current | ±10 µA max at 125°C - prevents unintended current paths when ports are disabled |
| Power Dissipation Capacitance | 40 pF per channel - allows accurate dynamic power estimation (PD = CPD × VCC² × f + ICC × VCC) |
Pinout & Package
Package: SOIC-20 Wide (Case 751D), 12.8 mm × 7.5 mm body, 1.27 mm pitch, Pb-free, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output Enable (active-low) | Global 3-state control: logic low enables transceiver; high disables both ports to high-Z |
| 2–9 | A-port inputs/outputs | 8-bit bidirectional data bus side A (A1–A8); direction determined by Pin 19 |
| 10 | GND | Ground reference for all internal circuitry and I/O structures |
| 11–18 | B-port inputs/outputs | 8-bit bidirectional data bus side B (B1–B8); complements A-port under Direction control |
| 19 | Direction control | Logic high: data flows A→B; logic low: data flows B→A |
| 20 | VCC | Positive supply rail (2.0–6.0 V) powering internal logic and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| CMOS input compatibility | Accepts standard CMOS outputs directly; external pull-ups enable LSTTL input compatibility |
| High noise immunity | Typical noise margin > 40% of VCC across full temperature range due to CMOS threshold design |
| JEDEC Std. No. 7A compliance | Meets industry-standard AC/DC electrical and timing requirements for 245-family transceivers |
| Pb-free & RoHS compliant | Meets EU RoHS Directive 2011/65/EU and halogen-free material requirements |
| AEC-Q100 stress testing | Qualified per AEC-Q100 Rev-H for automotive-grade reliability (HCT variant only; NLV prefix indicates automotive screening) |
Applications
| Industrial Backplane Interface | Legacy Microprocessor Expansion |
|---|---|
Use Scenario: Isolating and extending parallel address/data buses between PLC CPU and I/O modules over 150 mm PCB traces. IC Role / Device Role / Timing Role: Bidirectional bus buffer with 3-state isolation during bus arbitration cycles. Use Value: Prevents bus contention during multi-master access; 13 ns propagation delay supports 30 MHz bus clocking. |
Use Scenario: Interfacing Z80 or 8086-based embedded controllers to peripheral cards via ISA-like expansion slots. IC Role / Device Role / Timing Role: Level-translating transceiver enabling 5 V CPU to drive 5 V peripherals while maintaining TTL-compatible thresholds. Use Value: Eliminates need for discrete level shifters; 15 LSTTL load drive supports up to 15 peripheral devices per bus segment. |
| Automotive Body Control Module | Test Equipment Data Acquisition |
Use Scenario: Routing sensor data and actuator commands between MCU and CAN/LIN gateway ICs in junction box assemblies. IC Role / Device Role / Timing Role: Signal conditioning and bus isolation element in 12 V automotive power domain with local 5 V regulation. Use Value: −55°C to +125°C operation ensures reliability under hood; AEC-Q100 screening validates lifetime performance. |
Use Scenario: Multiplexing analog-to-digital converter outputs and digital control signals onto shared test head backplanes. IC Role / Device Role / Timing Role: High-Z isolation switch enabling sequential sampling without crosstalk between channels. Use Value: 15 pF max 3-state I/O capacitance minimizes settling time errors; ±10 µA leakage preserves measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC74HC245ADWG | Same die, SOIC-20 wide rail packaging (38 units), no automotive screening | Limited to commercial/industrial use; lacks NLV's extended temperature and screening validation | Select for cost-sensitive non-automotive designs where tape-and-reel is not required |
| SN74HC245N | TI part, PDIP-20 package, identical HC logic specs but different thermal resistance (JA = 70°C/W vs. 96°C/W) | Through-hole assembly only; higher thermal efficiency but larger board footprint | Choose for prototyping or low-volume through-hole systems requiring same logic behavior |
Compared with MC74HC245ADWG and SN74HC245N, the NLV74HC245ADWR2G provides automotive-grade screening, tape-and-reel delivery for SMT production, and optimized thermal performance for dense industrial PCB layouts - making it the preferred choice for volume automotive and industrial OEM programs.
Availability
NLV74HC245ADWR2G is available at Aetrix Electronics and suitable for industrial backplane interfaces, automotive body control modules, and legacy microprocessor expansion systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for NLV74HC245ADWR2G 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, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NLV74HC245ADWR2G belongs to onsemi's legacy HC logic product line, designed specifically for robust, drop-in replacement of 74LS245 in industrial and automotive systems requiring wider voltage range, lower power, and enhanced reliability.
FAQ
What is the maximum operating temperature for NLV74HC245ADWR2G?
The NLV74HC245ADWR2G is rated for operation from −55°C to +125°C. This extended temperature range is validated per AEC-Q100 stress testing protocols and makes the device suitable for under-hood automotive applications and harsh industrial environments where ambient temperatures exceed standard commercial limits. The NLV74HC245ADWR2G maintains full DC and AC specifications across this entire range.
Does NLV74HC245ADWR2G support 3.3 V logic systems?
Yes, NLV74HC245ADWR2G fully supports 3.3 V operation. Its guaranteed supply voltage range of 2.0 V to 6.0 V includes 3.3 V, and all DC parameters - including VIH (min 2.1 V at VCC = 3.0 V), VOL (max 0.26 V at 2.4 mA load), and propagation delay (55 ns max at VCC = 3.0 V) - are specified and tested at that voltage. It interfaces directly with 3.3 V CMOS and mixed-voltage systems without level shifters.
Is NLV74HC245ADWR2G pin-compatible with 74LS245?
Yes, NLV74HC245ADWR2G is pin-compatible with the 74LS245. The datasheet explicitly states "identical in pinout to the LS245", and the SOIC-20 wide package (Case 751D) matches the physical layout and terminal numbering of standard LS245 packages. This allows direct PCB-level replacement in legacy designs while upgrading to CMOS performance, lower power, and extended temperature capability.
What is the function of Pin 1 and Pin 19 on NLV74HC245ADWR2G?
Pin 1 is the active-low Output Enable (OE) input: when low, the transceiver passes data; when high, both A and B ports enter high-impedance state. Pin 19 is the Direction (DIR) control: logic high enables A→B data flow; logic low enables B→A flow. These two control signals operate independently, allowing precise bus arbitration and direction management in multiprocessor or master-slave configurations using NLV74HC245ADWR2G.
Can NLV74HC245ADWR2G be used in place of MC74HCT245A?
No - NLV74HC245ADWR2G and MC74HCT245A are not interchangeable without circuit review. The NLV74HC245ADWR2G is an HC-family device (2.0–6.0 V supply, CMOS-input thresholds), while MC74HCT245A is HCT-family (4.5–5.5 V only, TTL-input thresholds). Substituting NLV74HC245ADWR2G for MC74HCT245A in a 5 V TTL system may cause marginal VIH/VIL margins or timing violations unless input logic levels are verified against HC thresholds.
NLV74HC245ADWR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- 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-SOIC
NLV74HC245ADWR2G FAQ
1.How can I place an order for NLV74HC245ADWR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NLV74HC245ADWR2G 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 NLV74HC245ADWR2G reliable?
The price and inventory of NLV74HC245ADWR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NLV74HC245ADWR2G is usually 5 days.
3.What payment methods are accepted for NLV74HC245ADWR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NLV74HC245ADWR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NLV74HC245ADWR2G?
NLV74HC245ADWR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NLV74HC245ADWR2G 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 NLV74HC245ADWR2G?
For technical support, including NLV74HC245ADWR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NLV74HC245ADWR2G requirements.
6.How does Aetrix verify that NLV74HC245ADWR2G is sourced from the original manufacturer or authorized distributors?
All NLV74HC245ADWR2G 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 NLV74HC245ADWR2G meets industry standards.
7.What is the process for return or replacement of NLV74HC245ADWR2G?
All NLV74HC245ADWR2G units undergo pre-shipment inspection (PSI). If there is an issue with NLV74HC245ADWR2G, 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 NLV74HC245ADWR2G part is unused and in its original packaging.
Return procedure for NLV74HC245ADWR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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