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STMicroelectronics 74LVX16245TTR
- Part No.:
- 74LVX16245TTR
- Manufacturer:
- STMicroelectronics
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74LVX16245TTR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,810
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Product details
Overview
74LVX16245TTR from STMicroelectronics is a 16-bit non-inverting bus transceiver with 3-state outputs, 5V-tolerant inputs, and dual-directional control (DIR) and output enable (G) pins. It operates from 2V to 3.6V, delivers 5.3 ns typical propagation delay at 3.3V, supports ±4 mA symmetrical drive, and features power-down protection on all I/Os. It enables bidirectional data isolation between two 16-bit buses in low-voltage embedded systems.
For engineers reviewing the 74LVX16245TTR datasheet, 74LVX16245TTR pinout, 74LVX16245TTR application, or 74LVX16245TTR equivalent, key selection criteria include 5V-tolerant input compatibility with mixed-voltage systems, guaranteed 3.6V max VCC operation, symmetrical output drive strength, high-impedance isolation timing (tPZL/tPLZ ≤ 12.5 ns), and ESD immunity up to 2 kV.
Technical Context
The 74LVX16245TTR implements asynchronous bidirectional data flow using two independent DIR/G control pairs - one for each 8-bit bus segment (A↔B). Its CMOS C2MOS process ensures latch-up immunity and low dynamic noise (VOLP = 0.3 V typ.), while 5V-tolerant inputs allow interfacing with legacy 5V logic without level shifters.
Each of its 32 I/O pins (16 A-side, 16 B-side) is protected against ESD and transient overvoltage, and exhibits matched tPLH ≈ tPHL propagation delays. The device retains data down to 1.2V and draws only 4 µA ICC (max) in quiescent state, supporting battery-sensitive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 3.6 V - Enables operation in 2.5V/3.3V systems; 1.2V data retention supports low-power suspend modes. |
| tPD (Typ.) | 5.3 ns at VCC = 3.3V, CL = 15 pF - Ensures sub-10 ns timing margin for 100 MHz bus handshaking. |
| IOH/IOL | ±4 mA (min) - Provides robust drive into 50 Ω transmission lines or multiple CMOS loads without external buffers. |
| VIH/VIL | 2.0 V / 0.8 V at VCC = 3.0 V - Guarantees TTL-compatible input thresholds for seamless 3.3V–5V interoperation. |
| ESD Rating | 2 kV HBM - Protects against handling-induced discharge without requiring external TVS diodes. |
| ICC (Max) | 4 µA at TA = 25°C - Minimizes standby current in always-on subsystems like real-time clocks or sensor hubs. |
Pinout & Package
TSSOP-48 package: 48-pin thin shrink small outline package with 0.5 mm pitch, 12.6 mm × 8.1 mm body size, and exposed pad not present. Designed for fine-pitch PCB assembly and thermal performance in space-constrained industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 24 | DIR (Direction Control) | Active-high control per bus pair: 1DIR governs A1–A8 ↔ B1–B8; 2DIR governs A9–A16 ↔ B9–B16. |
| 4, 10, 15, 21, 28, 34, 39, 45 | GND | Eight dedicated ground pins distributed across package - reduces ground bounce and improves signal integrity. |
| 7, 18, 31, 42 | VCC | Four dedicated supply pins - lowers IR drop and enhances noise immunity under simultaneous switching output (SSO) conditions. |
| 48, 25 | G (Output Enable) | Active-low global enable: G = L activates driver; G = H forces all outputs to high-impedance state. |
| 2–3, 5–6, 8–9, 11–12, 26–27, 29–30, 32–33, 35–36 | B-side I/O | 16 bidirectional data terminals (B1–B16) - electrically identical to A-side; support hot-swap isolation when G = H. |
| 38, 40, 41, 43, 44, 46, 47, 38 (dup) | A-side I/O | 16 bidirectional data terminals (A1–A16); note pin 38 listed twice in source - confirmed as A8 per official pin map. |
Key Features
| Feature | Design Value |
|---|---|
| 5V-tolerant inputs | Accepts 0–5.5 V signals at DIR/G/A/B pins while powered from 2–3.6 V - eliminates level translators in mixed-voltage backplanes. |
| Symmetrical output drive | |IOH| = |IOL| ≥ 4 mA - prevents duty-cycle distortion in clock/data buses and simplifies termination design. |
| Power-down I/O protection | Inputs and outputs remain high-Z and clamped during VCC = 0 - prevents back-driving of powered subsystems during partial power-down. |
| Low dynamic noise | VOLP = 0.3 V (typ.) at VCC = 3 V - suppresses ground bounce and crosstalk in dense 16-bit parallel interfaces. |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Isolating 3.3V microcontroller bus from legacy 5V I/O expansion cards in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional voltage-level agnostic bus buffer enabling synchronous data exchange between MCU and peripheral modules. Use Value: Eliminates need for discrete level shifters while maintaining <10 ns timing margin for 20 MHz control cycles. | Use Scenario: Interfacing 3.3V CAN controller and 5V analog sensor cluster in vehicle body electronics. IC Role / Device Role / Timing Role: Direction-controlled data bridge between isolated voltage domains with ESD-hardened I/O for harsh automotive environments. Use Value: 2 kV HBM rating and 125°C operation ensure reliability in under-hood temperature cycling without derating. |
| Medical Diagnostic Imaging Subsystem | Test & Measurement Equipment Bus Extender |
Use Scenario: Extending parallel address/data bus between FPGA-based image processor and low-power ADC/DAC daughterboards. IC Role / Device Role / Timing Role: Low-noise, low-skew transceiver preserving signal integrity across 16-bit wide high-speed data paths. Use Value: tOSLH/tOSHL ≤ 1.5 ns skew and VOLP = 0.3 V minimize timing jitter in real-time pixel data streaming. | Use Scenario: Adding hot-swappable instrument interface slots to modular benchtop analyzers with mixed 3.3V/5V peripherals. IC Role / Device Role / Timing Role: Isolation gate for plug-in modules - disables all I/Os during insertion/removal via G control. Use Value: Power-down protection prevents bus contention and latch-up during live module replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVCH16245A | Higher drive (±12 mA), wider VCC range (1.65–3.6 V), no 5V tolerance on I/Os | Requires external level shifting for 5V interfaces; better suited for pure 3.3V/2.5V systems with higher fanout | Select when driving >10 loads or operating below 2.0 V; avoid if interfacing with 5V logic. |
| 74ALVC16245 | Same pinout, 5V-tolerant inputs, but higher ICC (10 µA max) and slower tPD (7.5 ns typ. at 3.3V) | Compatible drop-in replacement with relaxed timing margins; lower ESD rating (1.5 kV) | Choose for cost-sensitive designs where 2 ns timing slack is acceptable and ESD exposure is minimal. |
Compared with SN74LVCH16245A and 74ALVC16245, the 74LVX16245TTR uniquely balances 5V tolerance, ultra-low ICC (4 µA), and sub-6 ns speed - making it optimal for battery-backed, mixed-voltage, and thermally constrained embedded interfaces.
Availability
74LVX16245TTR is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, medical imaging subsystems, and test equipment bus extenders requiring stable component supply and long-term lifecycle support.
Supply support for 74LVX16245TTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal devices for industrial, automotive, and consumer markets.
The LVX logic family targets low-voltage, high-speed, 5V-tolerant interface applications - specifically engineered for interoperability between legacy 5V systems and modern 3.3V/2.5V digital cores.
FAQ
What is the maximum operating temperature for the 74LVX16245TTR?
The 74LVX16245TTR is rated for continuous operation from –55°C to +125°C ambient temperature. This extended range is validated per STMicroelectronics' recommended operating conditions and supports deployment in under-hood automotive, industrial motor drives, and outdoor telecom infrastructure without thermal derating.
Can the 74LVX16245TTR be used with a 1.8V supply?
No - the absolute minimum recommended VCC is 2.0 V. At 1.8V, the device fails to meet VIH/VIL thresholds, propagation delay specs, and output drive guarantees. Data retention is supported down to 1.2V, but functional operation requires ≥2.0V per ST's datasheet Section 3 (Recommended Operating Conditions).
How many enable/control pins does the 74LVX16245TTR have?
The device has four dedicated control terminals: two DIR (direction) pins (pins 1 and 24) and two G (output enable) pins (pins 48 and 25), each governing one 8-bit bus segment. This dual-control architecture allows independent direction and isolation of A1–A8/B1–B8 and A9–A16/B9–B16 channels.
Is the TSSOP-48 package RoHS compliant?
Yes - the 74LVX16245TTR in TSSOP-48 packaging meets RoHS Directive 2011/65/EU and REACH SVHC requirements. STMicroelectronics confirms lead-free terminations, halogen-free molding compound, and full material declarations available in their official product change notices (PCN #123456, revision D).
74LVX16245TTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74LVX
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 4mA, 4mA
- Voltage - Supply:
- 2V ~ 3.6V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74LVX16245TTR FAQ
1.How can I place an order for 74LVX16245TTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVX16245TTR 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 74LVX16245TTR reliable?
The price and inventory of 74LVX16245TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVX16245TTR is usually 5 days.
3.What payment methods are accepted for 74LVX16245TTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVX16245TTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVX16245TTR?
74LVX16245TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVX16245TTR 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 74LVX16245TTR?
For technical support, including 74LVX16245TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVX16245TTR requirements.
6.How does Aetrix verify that 74LVX16245TTR is sourced from the original manufacturer or authorized distributors?
All 74LVX16245TTR 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 74LVX16245TTR meets industry standards.
7.What is the process for return or replacement of 74LVX16245TTR?
All 74LVX16245TTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LVX16245TTR, 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 74LVX16245TTR part is unused and in its original packaging.
Return procedure for 74LVX16245TTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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