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Texas Instruments 74ALVTH16245ZQLR
- Part No.:
- 74ALVTH16245ZQLR
- Manufacturer:
- Texas Instruments
- Package:
- 56-VFBGA
- Datasheet:
-
74ALVTH16245ZQLR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 56BGA
- Quantity:
- Payment:
- Shipping:
Inventory:670
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Product details
Overview
74ALVTH16245ZQLR from Texas Instruments is a 16-bit dual-octal noninverting 3-state transceiver designed for 2.5-V/3.3-V VCC operation with 5-V tolerant I/O, −32/64 mA drive strength at 3.3 V, bus-hold circuitry, and hot-insertion support via Ioff and power-up 3-state. It enables bidirectional data flow between A and B buses in mixed-voltage backplane or memory interface applications.
For engineers reviewing the 74ALVTH16245ZQLR datasheet, 74ALVTH16245ZQLR pinout, 74ALVTH16245ZQLR application, or 74ALVTH16245ZQLR equivalent, key selection criteria include its 2.3–3.6-V supply range, 5-V input tolerance, 3.1-ns max propagation delay (VCC = 3.3 V), 42°C/W θJA thermal resistance, and GQL (VFBGA) package compatibility with high-density PCB layouts.
Technical Context
This device implements two independent 8-bit transceiver sections, each controlled by dedicated DIR and OE inputs, supporting A→B or B→A data transmission with simultaneous isolation capability. Its Advanced BiCMOS Technology (ABT) architecture delivers low static power dissipation while maintaining TTL-level compatibility in 5-V systems.
The integrated bus-hold circuit eliminates external pullup/pulldown resistors on data inputs, and distributed VCC/GND pins plus flow-through pinout reduce high-speed switching noise. Ioff protection disables outputs during power-down to prevent current backflow, and power-up 3-state ensures high-impedance outputs during ramp-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - supports both 2.5-V and 3.3-V system rails without level shifters |
| I/O Voltage Tolerance | 0 V to 5.5 V - enables direct interfacing with legacy 5-V logic without external voltage translation |
| Output Drive | −32 mA (high), 64 mA (low) at VCC = 3.3 V - sufficient for driving multiple LVTTL loads or stubs on backplanes |
| Propagation Delay | ≤3.1 ns (tPLH/tPHL, CL = 50 pF, VCC = 3.3 V) - meets timing requirements for high-speed address/data bus applications |
| Bus-Hold Current | ±75 µA (IBHH/IBHL, VCC = 3 V) - actively holds floating inputs at valid logic levels, eliminating need for external biasing |
| Thermal Resistance | θJA = 42°C/W (GQL package) - enables reliable operation in thermally constrained embedded modules |
| Hot-Insertion Support | Ioff ≤ ±100 µA at VCC = 0 V - prevents damaging back-current during live board insertion into powered backplanes |
Pinout & Package
VFBGA-48 (GQL) package with 0.5-mm pitch, 5.5 mm × 6.3 mm body size, and exposed thermal pad - optimized for space-constrained industrial control and telecom line-card designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction Control Input | Active-high signal selecting data flow direction per 8-bit section (A↔B) |
| 1OE, 2OE | Output Enable Input | Active-low signal enabling/disabling output drivers; high-impedance when asserted |
| 1A1–1A8, 2A1–2A8 | Port A Data I/O | First and second 8-bit data bus interface; supports bidirectional transfer with bus-hold |
| 1B1–1B8, 2B1–2B8 | Port B Data I/O | Second 8-bit data bus interface; electrically identical to Port A, fully 5-V tolerant |
| VCC (Pins 7, 18, 29, 40) | Power Supply | Distributed supply connections minimize simultaneous switching noise across 16-bit bus |
| GND (Pins 4, 11, 22, 33, 44) | Ground Reference | Multiple ground pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode signal operation | 2.3–3.6-V VCC with 5-V-tolerant I/O allows seamless integration into hybrid-voltage systems |
| Bus-hold circuitry | Eliminates external pullup/pulldown resistors on all data inputs, reducing BOM count and layout area |
| Flow-through pinout | Input and output pins arranged to enable straight-layer PCB routing, minimizing trace length and crosstalk |
| Low ground bounce | VOLP < 0.8 V at VCC = 3.3 V - reduces noise coupling into adjacent signals and analog sections |
| Latch-up immunity | >100 mA per JESD 78 Class II - ensures robustness in harsh industrial environments with ESD or surge events |
Applications
| Backplane Interface | Memory Expansion Module |
|---|---|
Use Scenario: Bidirectional data transfer between CPU module and peripheral cards in a 5-V backplane with local 3.3-V logic. IC Role / Device Role / Timing Role: Level-translating transceiver managing A/B bus arbitration with DIR-controlled direction and OE-gated isolation. Use Value: Enables direct connection of 3.3-V FPGA-based cards to legacy 5-V backplanes without discrete level shifters or voltage translators. |
Use Scenario: Adding SRAM or Flash memory to an embedded controller with mismatched I/O voltage domains. IC Role / Device Role / Timing Role: 16-bit data path buffer with sub-3.1-ns propagation delay ensuring setup/hold compliance for 100+ MHz memory access. Use Value: Maintains timing margin while supporting hot-plug memory upgrades via Ioff-protected isolation during power cycling. |
| Industrial PLC I/O Carrier | Test Equipment Signal Routing |
Use Scenario: Isolating field-side 5-V digital I/O from 3.3-V processor subsystem in programmable logic controllers. IC Role / Device Role / Timing Role: Dual-octal transceiver providing galvanically isolated data path with bus-hold on unused channels. Use Value: Prevents floating inputs from causing spurious state changes in noisy factory environments, improving system reliability. |
Use Scenario: Reconfigurable signal routing between DUT interface and measurement ASICs in automated test equipment. IC Role / Device Role / Timing Role: Low-skew (≤118 ps tpsmax) bidirectional switch enabling precise timing alignment across parallel test channels. Use Value: Minimizes inter-channel skew to maintain phase coherence in multi-pin parametric testing at >100 MHz rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ALVTH16245VR | Same ABT logic, identical electrical specs, but TVSOP-48 (DGV) package with 0.4-mm pitch and 3.6-mm width | Lower thermal resistance (58°C/W) but larger PCB footprint; no exposed thermal pad | Select VR for hand-soldering or lower-cost assembly where GQL's 0.5-mm pitch poses reflow challenges |
| SN74LVC16245ADGGR | LVC family: 1.65–3.6-V VCC, no 5-V tolerance, ±24 mA drive, higher ICC (5 mA typical), no bus-hold | Requires external level shifting for 5-V interfaces; unsuitable for hot-insertion due to missing Ioff | Select DGGR only in fully 3.3-V systems where cost and power efficiency outweigh mixed-voltage flexibility |
Compared with SN74ALVTH16245VR, 74ALVTH16245ZQLR offers superior thermal performance in compact form factors; compared with SN74LVC16245ADGGR, it provides essential 5-V tolerance and bus-hold functionality for legacy system integration.
Availability
74ALVTH16245ZQLR is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line-card memory expansion, and automated test equipment requiring stable component supply, long-term lifecycle support, and verified GQL-package sourcing.
Supply support for 74ALVTH16245ZQLR 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 decades of expertise in high-reliability interface ICs for industrial and communications infrastructure.
The ALVTH16245 product line targets mixed-voltage system interconnect, delivering robust 5-V-tolerant transceivers for backplane, memory, and modular I/O applications where signal integrity and hot-swap capability are critical.
FAQ
What voltage levels does the 74ALVTH16245ZQLR support on its I/O pins?
The 74ALVTH16245ZQLR supports input and output voltages from 0 V to 5.5 V regardless of VCC setting, enabling direct interfacing with 5-V logic while operating from a 2.3–3.6-V supply. This 5-V tolerance is specified across the full temperature range and does not require external clamping diodes or level shifters.
Does the 74ALVTH16245ZQLR require external pullup or pulldown resistors on data lines?
No - the 74ALVTH16245ZQLR integrates active bus-hold circuitry on all data inputs (A and B ports), which maintains valid logic states on floating inputs without external components. Using pullup or pulldown resistors with the 74ALVTH16245ZQLR is explicitly discouraged in the datasheet as it may interfere with bus-hold operation.
How does the 74ALVTH16245ZQLR support hot-insertion in live backplane systems?
The 74ALVTH16245ZQLR supports hot-insertion through two mechanisms: Ioff circuitry limits current to ±100 µA when VCC = 0 V, preventing backflow damage during insertion; and power-up 3-state forces outputs into high-impedance during VCC ramp-up, avoiding bus conflicts. Both features are guaranteed over the full −40°C to 85°C operating range.
What is the maximum data rate supported by the 74ALVTH16245ZQLR?
The 74ALVTH16245ZQLR achieves ≤3.1 ns propagation delay (tPLH/tPHL) under 3.3-V conditions with 50-pF load, supporting reliable operation at data rates exceeding 150 Mbps in point-to-point configurations. System-level bandwidth is further enhanced by low output skew (≤118 ps tpsmax) and distributed power/ground pins that suppress simultaneous switching noise.
Is the 74ALVTH16245ZQLR pin-compatible with other ALVTH16245 variants?
Yes - the 74ALVTH16245ZQLR shares identical logic function, pin assignment, and signal naming with all ALVTH16245 variants (e.g., DGG, DGV, DL packages). The GQL package uses the same 48-pin top-view layout shown in the datasheet's "SN74ALVTH16245 . . . GQL PACKAGE (TOP VIEW)" diagram, ensuring drop-in replacement capability when mechanical constraints allow.
74ALVTH16245ZQLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ALVTH
- Package/Case:
- 56-VFBGA
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.3V ~ 2.7V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 56-BGA Microstar Junior (7x4.5)
74ALVTH16245ZQLR FAQ
1.How can I place an order for 74ALVTH16245ZQLR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVTH16245ZQLR 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 74ALVTH16245ZQLR reliable?
The price and inventory of 74ALVTH16245ZQLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVTH16245ZQLR is usually 5 days.
3.What payment methods are accepted for 74ALVTH16245ZQLR?
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4.How is shipping managed for 74ALVTH16245ZQLR?
74ALVTH16245ZQLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVTH16245ZQLR 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 74ALVTH16245ZQLR?
For technical support, including 74ALVTH16245ZQLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVTH16245ZQLR requirements.
6.How does Aetrix verify that 74ALVTH16245ZQLR is sourced from the original manufacturer or authorized distributors?
All 74ALVTH16245ZQLR 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 74ALVTH16245ZQLR meets industry standards.
7.What is the process for return or replacement of 74ALVTH16245ZQLR?
All 74ALVTH16245ZQLR units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVTH16245ZQLR, 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 74ALVTH16245ZQLR part is unused and in its original packaging.
Return procedure for 74ALVTH16245ZQLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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