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Texas Instruments SN74LVTH652PWR
- Part No.:
- SN74LVTH652PWR
- Manufacturer:
- Texas Instruments
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVTH652PWR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,254
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Product details
Overview
SN74LVTH652PWR from Texas Instruments is a 3.3-V octal bus transceiver with dual D-type registers, supporting mixed-mode 5-V/3.3-V interfacing, real-time or stored data transfer between two 8-bit buses (A↔B), and hot-insertion via Ioff and power-up 3-state. It operates down to 2.7 V, delivers 64 mA sink current per output, and features bus-hold on all data inputs.
For engineers reviewing the SN74LVTH652PWR datasheet, SN74LVTH652PWR pinout, SN74LVTH652PWR application, or SN74LVTH652PWR equivalent, this device serves as a bidirectional, register-enabled bus interface for legacy 5-V system integration into low-voltage 3.3-V domains-especially where glitch-free multiplexing, battery operation, and floating-input robustness are required.
Technical Context
The SN74LVTH652PWR integrates two independent 8-bit transceiver paths (A↔B) with separate clock (CLKAB/CLKBA), select (SAB/SBA), and output-enable (OEAB/OEBA) controls. Each path supports concurrent real-time pass-through or registered storage, with select logic eliminating multiplexer glitches during mode transitions.
Its bus-hold circuitry actively maintains valid logic states on unused A/B inputs without external resistors, while Ioff and power-up 3-state ensure safe hot insertion by disabling outputs during power ramp-up/down. The device meets JESD 17 latch-up (>500 mA) and JESD 22 ESD standards (2000-V HBM, 200-V MM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - Enables stable operation under unregulated battery supply or noisy 3.3-V rails. |
| IOH / IOL | −32 mA / +64 mA - Sustains TTL-level drive strength into 5-V loads while powered from 3.3-V VCC. |
| Max Clock Frequency | 150 MHz - Supports high-speed synchronous bus handshaking and register updates. |
| Bus-Hold Current | ±500 µA at VCC = 3.6 V - Actively holds floating inputs without pull resistors, reducing BOM count and layout complexity. |
| Propagation Delay | 1.2–5.9 ns (CL = 50 pF) - Ensures timing-critical bidirectional data routing with sub-6 ns worst-case latency. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct connection to 5-V CMOS/TTL signal sources without level shifters. |
| VOLP (Ground Bounce) | <0.8 V at VCC = 3.3 V - Minimizes noise coupling during simultaneous output switching in dense PCB layouts. |
Pinout & Package
TSSOP-24 package (PW), 7.9 mm × 4.5 mm × 1.2 mm max height, lead pitch 0.65 mm, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4–11, 14–21 | A1–A8, B1–B8 data I/O | Octal bidirectional data terminals with bus-hold; support real-time or registered transfer between buses. |
| 3, 12, 13, 22–24 | OEAB, OEBA, SAB, SBA, CLKAB, CLKBA | Control inputs managing direction, storage mode, and clocking; all tolerate 5-V logic levels. |
| 23 | VCC | 3.3-V supply input; must be decoupled locally due to fast edge rates and bus-hold current draw. |
| 24 | GND | Signal reference plane; dedicated ground pin minimizes ground bounce in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode 5-V/3.3-V interface | Accepts 5-V inputs and drives 5-V loads while powered from 3.3-V VCC-eliminates external level translators. |
| Glitch-free select control | Hardware logic prevents transient invalid states during SAB/SBA transitions between real-time and stored data modes. |
| Hot-insertion support | Ioff disables outputs when VCC = 0; power-up 3-state prevents bus contention during power sequencing. |
| Integrated bus-hold | Active termination on all 16 data lines removes need for 16 external pullup/pulldown resistors and associated layout area. |
| Dual-register architecture | Independent CLKAB/CLKBA and SAB/SBA allow asymmetric storage-e.g., store A while holding B, or vice versa. |
Applications
| Industrial Backplane Interface | Legacy System Upgrades |
|---|---|
|
Use Scenario: Interfacing a modern 3.3-V FPGA-based controller to an aging 5-V PLC backplane with parallel I/O modules. IC Role / Device Role / Timing Role: Bidirectional bus transceiver with register staging-holds command data during arbitration, then forwards it synchronously to the 5-V bus. Use Value: Eliminates discrete level shifters and glue logic; bus-hold prevents spurious reads during module hot-swap events. |
Use Scenario: Retrofitting a 5-V microcontroller subsystem into a new 3.3-V mainboard without redesigning signal integrity paths. IC Role / Device Role / Timing Role: Voltage-tolerant bridge IC enabling direct connection of 5-V address/data/control lines to 3.3-V domain. Use Value: Maintains full 150 MHz throughput while operating down to 2.7 V-critical for brownout resilience in field-deployed equipment. |
| Test Equipment Data Capture | Automated Test Fixture Control |
|
Use Scenario: Capturing parallel digital waveforms from a DUT running at 5-V logic levels using a 3.3-V ADC-based acquisition system. IC Role / Device Role / Timing Role: Registered input buffer-samples and holds DUT data on CLKAB edges before forwarding to the acquisition chain. Use Value: Reduces setup/hold timing margin requirements on the ADC interface; eliminates external latches and clock-domain crossing logic. |
Use Scenario: Driving multiple 5-V relay boards and opto-isolators from a 3.3-V test sequencer MCU with limited GPIO count. IC Role / Device Role / Timing Role: Octal output driver with storage-latches control bits from the MCU, then asserts them simultaneously to all relays. Use Value: Prevents partial activation during bit-by-bit GPIO writes; 64 mA per output ensures reliable coil energization without external drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal registered transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVT652DBR | No bus-hold; requires external pull resistors on all 16 data lines; identical pinout and register functionality. | Suitable only where board space permits external termination and floating inputs are reliably avoided. | Choose when cost reduction outweighs BOM simplification and robustness against floating nodes. |
| SN74LVTH16652DGGR | 16-bit (dual-octal), TSSOP-48 package; higher channel count but larger footprint and different pin mapping. | Applicable for systems requiring two independent 8-bit interfaces on one chip-e.g., dual-bus memory expansion. | Choose only if doubling channel density justifies PCB re-layout and increased thermal load (θJA = 75°C/W vs. 88°C/W). |
Compared with SN74LVT652DBR, SN74LVTH652PWR adds bus-hold for floating-input immunity and stronger drive (64 mA vs. 32 mA), while SN74LVTH16652DGGR trades pin compatibility for doubled bandwidth-neither is pin-to-pin replaceable, but both serve adjacent system-level needs.
Availability
SN74LVTH652PWR is available at Aetrix Electronics and suitable for industrial backplane interfaces, legacy system upgrades, test equipment data capture, and automated test fixture control requiring stable component supply across extended temperature ranges (−40°C to 85°C).
Supply support for SN74LVTH652PWR 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 connectivity technologies, with decades of expertise in logic interface solutions.
The SN74LVTH652PWR belongs to TI's LVT/H series of advanced low-voltage BiCMOS transceivers, designed specifically for seamless interoperability between 3.3-V logic domains and legacy 5-V systems in industrial, test, and automation equipment.
FAQ
What voltage levels can SN74LVTH652PWR accept on its A/B data inputs?
SN74LVTH652PWR accepts input voltages up to 5.5 V on all A1–A8 and B1–B8 pins, regardless of VCC level (2.7 V to 3.6 V). This allows direct connection to 5-V TTL or CMOS sources without level-shifting circuitry-verified in the Absolute Maximum Ratings and Electrical Characteristics tables of the SCBS706F datasheet.
Does SN74LVTH652PWR support true bidirectional data flow between Bus A and Bus B?
Yes, SN74LVTH652PWR supports full bidirectional operation: real-time transfer from Bus A to Bus B (when OEAB = H, OEBA = L, SAB = L), from Bus B to Bus A (when OEAB = L, OEBA = H, SBA = L), or simultaneous registered transfer in either direction. The function table and Figure 1 in the SCBS706F datasheet confirm all four fundamental bus-management modes.
How does the bus-hold feature on SN74LVTH652PWR eliminate external resistors?
SN74LVTH652PWR integrates active bus-hold circuitry on all 16 data I/O pins (A1–A8, B1–B8), providing ±500 µA dynamic hold current at VCC = 3.6 V. This maintains valid logic states on floating inputs-verified in the Electrical Characteristics table-making external pullup/pulldown resistors unnecessary and reducing BOM count and layout area.
Can SN74LVTH652PWR be used in hot-swap applications?
Yes, SN74LVTH652PWR is explicitly designed for hot insertion: its Ioff circuitry disables outputs when VCC = 0 V, preventing backflow current, and its power-up 3-state ensures outputs remain high-impedance during power ramp-up/down. These capabilities are documented in the Features section and confirmed by JESD 17 latch-up and JESD 22 ESD ratings in the SCBS706F datasheet.
What is the maximum clock frequency supported by SN74LVTH652PWR for register operations?
SN74LVTH652PWR supports a maximum clock frequency of 150 MHz for both CLKAB and CLKBA inputs across the full operating range (VCC = 2.7 V to 3.6 V, TA = −40°C to 85°C), as specified in the Timing Requirements table of the SCBS706F datasheet. This enables high-speed synchronous data capture and forwarding in time-critical bus architectures.
SN74LVTH652PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-TSSOP
SN74LVTH652PWR FAQ
1.How can I place an order for SN74LVTH652PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH652PWR 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 SN74LVTH652PWR reliable?
The price and inventory of SN74LVTH652PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH652PWR is usually 5 days.
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Once your SN74LVTH652PWR 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 SN74LVTH652PWR?
For technical support, including SN74LVTH652PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH652PWR requirements.
6.How does Aetrix verify that SN74LVTH652PWR is sourced from the original manufacturer or authorized distributors?
All SN74LVTH652PWR 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 SN74LVTH652PWR meets industry standards.
7.What is the process for return or replacement of SN74LVTH652PWR?
All SN74LVTH652PWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH652PWR, 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 SN74LVTH652PWR part is unused and in its original packaging.
Return procedure for SN74LVTH652PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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