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Texas Instruments 74LVTH16245ADGGRE4
- Part No.:
- 74LVTH16245ADGGRE4
- Manufacturer:
- Texas Instruments
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
74LVTH16245ADGGRE4.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,965
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Product details
Overview
74LVTH16245ADGGRE4 from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 3.3-V and 5-V systems. It features bus-hold circuitry, Ioff support for hot insertion, distributed VCC/GND pins, and operates down to 2.7 V supply. Used in mixed-voltage backplane interfaces and memory expansion subsystems.
For engineers reviewing the 74LVTH16245ADGGRE4 datasheet, 74LVTH16245ADGGRE4 pinout, 74LVTH16245ADGGRE4 application, or 74LVTH16245ADGGRE4 equivalent, key selection criteria include its 48-pin TSSOP package, ±64 mA output drive at 3.3 V, 3.3-V VCC with 5-V tolerant I/O, and guaranteed operation from –40°C to +85°C.
Technical Context
The 74LVTH16245ADGGRE4 implements two independent 8-bit transceiver sections (A↔B), each controlled by dedicated DIR (direction) and OE (output enable) inputs. Its Advanced BiCMOS Technology (ABT) enables low static power dissipation while maintaining TTL-compatible thresholds and high-speed switching.
It supports true mixed-mode signaling: A- and B-port inputs accept 0–5.5 V logic levels regardless of VCC (2.7–3.6 V), and outputs drive 5-V buses directly. Bus-hold circuitry eliminates external pull resistors on unused inputs, and Ioff protection disables outputs during power-down to prevent current backflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation and tolerates supply droop without functional loss. |
| IOL / IOH | 64 mA / –32 mA at VCC = 3.3 V - drives standard TTL loads and sustains robust signal integrity across 50-pF loads. |
| tPLH / tPHL | 2.3 ns / 2.1 ns typical (VCC = 3.3 V, CL = 50 pF) - enables high-throughput data transfer in 100+ MHz bus environments. |
| VIH / VIL | 2.0 V / 0.8 V - ensures reliable recognition of 5-V TTL logic levels while powered from 3.3 V. |
| Bus-Hold Current | ±750 µA max (VCC = 3.6 V) - actively maintains valid logic state on floating inputs without external components. |
| Ioff Leakage | ±100 µA at VCC = 0 V - blocks damaging back-current during hot-swap or partial-power-down sequences. |
| ESD Rating | 2000-V HBM, 200-V MM - meets industrial-grade ESD robustness requirements per JESD22. |
Pinout & Package
TSSOP-48 (DGG) package: 12.4 mm × 6.1 mm × 1.2 mm body, 0.5-mm pitch, lead-free NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: LOW = A→B, HIGH = B→A; enables bidirectional isolation when OE is HIGH. |
| 1OE, 2OE | Output enable input (per 8-bit section) | Active-LOW: drives outputs when LOW; places both A- and B-port outputs in high-impedance when HIGH. |
| 1A1–1A8, 2A1–2A8 | A-port data inputs/outputs | 8-bit data interface for first/second transceiver section; always input-enabled, require defined logic level to limit ICCZ. |
| 1B1–1B8, 2B1–2B8 | B-port data inputs/outputs | 8-bit data interface for first/second transceiver section; functionally identical to A-port with independent DIR/OE control. |
| VCC, GND | Power and ground terminals | Distributed across package (12× VCC, 12× GND) - minimizes simultaneous switching noise and improves signal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-voltage I/O tolerance | 5-V input and output compatibility with 3.3-V VCC - enables seamless interconnection between legacy 5-V logic and modern low-voltage subsystems. |
| Bus-hold circuitry | Eliminates need for external pullup/pulldown resistors on all A- and B-port data lines - reduces BOM count and PCB area. |
| Hot-insertion support | Ioff and power-up 3-state ensure outputs remain high-impedance during power ramp-up/down - prevents bus contention in live-backplane systems. |
| Flow-through pinout | Input and output pins arranged linearly (e.g., 1A1 adjacent to 1B1) - simplifies layer routing and reduces trace crosstalk in dense PCB layouts. |
| Low ground bounce | VOLP < 0.8 V typical at VCC = 3.3 V - maintains noise margin in high-speed switching applications with multiple outputs toggling simultaneously. |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
|
Use Scenario: Interfacing a 3.3-V FPGA-based controller to legacy 5-V peripheral cards in programmable logic controllers. IC Role / Device Role: Bidirectional voltage-level translator and bus isolator between mismatched logic families. Use Value: Enables direct connection without level-shifter ICs or resistor networks, reducing latency and component count. |
Use Scenario: Adding external SRAM or Flash memory to a 3.3-V microcontroller with 5-V-tolerant address/data bus. IC Role / Device Role: Data bus extender with direction-controlled 16-bit path and output disable for shared memory arbitration. Use Value: Provides full 16-bit throughput with sub-3 ns propagation delay and eliminates bus contention during memory access handshaking. |
| Hot-Swappable Module Carrier | Test Equipment Signal Routing |
|
Use Scenario: Supporting field-replaceable modules in automated test equipment where boards are inserted under power. IC Role / Device Role: Isolation buffer with Ioff and power-up 3-state to prevent backdrive damage during insertion/removal. Use Value: Guarantees zero current injection into powered-down modules, meeting IEC 61000-4-2 Class 4 compliance requirements. |
Use Scenario: Routing digital stimulus/response signals between 3.3-V pattern generators and 5-V DUTs in ATE platforms. IC Role / Device Role: Reconfigurable bidirectional signal path with independent enable per 8-bit lane for flexible channel mapping. Use Value: Allows dynamic reassignment of signal lanes via DIR/OE control, enabling multi-DUT parallel testing without hardware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive strength (24 mA sink/source), no bus-hold, 1.65–3.6 V VCC range. | Suitable for lower-noise, lower-power 3.3-V-only systems; not 5-V tolerant. | Select when interfacing only with 3.3-V logic and board space/power budget constrain ABT performance. |
| 74ALVCH16245DGGRE4 | Higher speed (tPD ~1.8 ns), same 3.3-V VCC, but no 5-V input tolerance - max VI = 3.6 V. | Optimized for high-speed 3.3-V backplanes where voltage translation is handled elsewhere. | Choose when maximum timing margin is critical and system uses uniform 3.3-V signaling throughout. |
Compared with SN74LVC16245ADGGR and 74ALVCH16245DGGRE4, the 74LVTH16245ADGGRE4 uniquely delivers 5-V I/O tolerance, bus-hold, and hot-swap capability in a single 48-pin TSSOP device - making it the only option for mixed-voltage, high-reliability industrial backplane designs requiring zero external biasing.
Availability
74LVTH16245ADGGRE4 is available at Aetrix Electronics and suitable for industrial backplane interfaces, memory expansion subsystems, hot-swappable module carriers, and ATE signal routing applications requiring stable component supply and long-term manufacturability.
Supply support for 74LVTH16245ADGGRE4 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 logic solutions, with over 90 years of innovation in industrial, automotive, and communications markets.
The 74LVTH16245ADGGRE4 belongs to TI's Widebus™ family of advanced bus interface devices, engineered specifically for robust, mixed-voltage data transfer in mission-critical industrial and test equipment.
FAQ
What is the operating temperature range for the 74LVTH16245ADGGRE4?
The 74LVTH16245ADGGRE4 is rated for operation from –40°C to +85°C ambient temperature, matching the commercial-industrial grade specification of the SN74LVTH16245A series. This range is validated per JEDEC JESD78 and confirmed in the official TI datasheet SCBS143R, ensuring reliability in factory automation and outdoor embedded systems.
Does the 74LVTH16245ADGGRE4 support 5-V inputs while powered from 3.3 V?
Yes, the 74LVTH16245ADGGRE4 fully supports 5-V-tolerant inputs: its VI rating extends to 5.5 V regardless of VCC (2.7–3.6 V), allowing direct connection to 5-V TTL outputs without external level shifters. This is explicitly specified in the Recommended Operating Conditions table of the TI datasheet.
How does bus-hold functionality work on the 74LVTH16245ADGGRE4?
The 74LVTH16245ADGGRE4 integrates active bus-hold circuitry on all A- and B-port data inputs, which maintains the last-valid logic state when inputs float. It draws up to ±750 µA (at VCC = 3.6 V) to hold the line, eliminating the need for external pullup/pulldown resistors - a feature confirmed in the Electrical Characteristics table under II(hold).
Is the 74LVTH16245ADGGRE4 pin-compatible with other packages in the LVTH16245A family?
No - the 74LVTH16245ADGGRE4 uses the 48-pin TSSOP (DGG) package, which has different mechanical dimensions, thermal characteristics, and land pattern than SSOP (DL), TVSOP (DGV), or FBGA (GQL/ZQL) variants. While logic function and pin numbering are consistent, PCB layout is not interchangeable across packages.
What is the maximum output current drive capability of the 74LVTH16245ADGGRE4?
The 74LVTH16245ADGGRE4 delivers up to 64 mA sink current (IOL) and –32 mA source current (IOH) per output at VCC = 3.3 V, as specified in the Recommended Operating Conditions table. This allows direct driving of multiple TTL loads or termination-matched transmission lines without buffering.
74LVTH16245ADGGRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TSSOP
74LVTH16245ADGGRE4 FAQ
1.How can I place an order for 74LVTH16245ADGGRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVTH16245ADGGRE4 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 74LVTH16245ADGGRE4 reliable?
The price and inventory of 74LVTH16245ADGGRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVTH16245ADGGRE4 is usually 5 days.
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74LVTH16245ADGGRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVTH16245ADGGRE4 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 74LVTH16245ADGGRE4?
For technical support, including 74LVTH16245ADGGRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVTH16245ADGGRE4 requirements.
6.How does Aetrix verify that 74LVTH16245ADGGRE4 is sourced from the original manufacturer or authorized distributors?
All 74LVTH16245ADGGRE4 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 74LVTH16245ADGGRE4 meets industry standards.
7.What is the process for return or replacement of 74LVTH16245ADGGRE4?
All 74LVTH16245ADGGRE4 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVTH16245ADGGRE4, 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 74LVTH16245ADGGRE4 part is unused and in its original packaging.
Return procedure for 74LVTH16245ADGGRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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