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NXP Semiconductors 74LVT652PW,118
- Part No.:
- 74LVT652PW,118
- Manufacturer:
- NXP Semiconductors
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVT652PW,118.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 24TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,408
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Product details
Overview
74LVT652PW,118 from NXP Semiconductors (formerly Philips) is a 3.3V octal transceiver/register with non-inverting 3-State outputs, dual independent clocked registers (A↔B), bus-hold inputs, and ±64mA/–32mA drive capability. It enables real-time or registered bidirectional data transfer between 5V-tolerant buses in high-speed embedded control and memory interface applications.
For engineers reviewing the 74LVT652PW,118 datasheet, 74LVT652PW,118 pinout, 74LVT652PW,118 application, or 74LVT652PW,118 equivalent, key selection criteria include its 2.6ns typical propagation delay (An↔Bn), 3.3V supply operation with 5V input tolerance, TSSOP-24 package, bus-hold functionality eliminating external pull-ups, and support for live insertion/extraction in hot-swap systems.
Technical Context
The 74LVT652PW,118 implements a BiCMOS architecture optimized for 3.3V VCC operation, combining low static current (0.13mA in 3-State) with high-speed performance (150MHz max clock frequency at 3.3V). Its dual-register structure allows independent latching of A- and B-side data on separate clock edges (CPAB/CPBA).
Bus management is controlled via four dedicated pins: OEAB/OEBA (directional output enable, active-High/active-Low respectively) and SAB/SBA (real-time vs. stored data select). The device supports simultaneous or staggered clocking depending on select pin states, enabling flexible data routing without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 2.7V to 3.6V - Enables direct integration into 3.3V logic domains while maintaining compatibility with legacy 5V I/O systems. |
| tPLH/tPHL (An↔Bn) | 2.8ns / 2.6ns typ. at CL=50pF - Supports sub-4ns bidirectional data path delays critical for high-throughput interconnects. |
| IOH/IOL Drive | –32mA / +64mA - Delivers robust drive strength for driving heavy capacitive loads or multiple TTL inputs without buffering. |
| VI Input Range | 0V to 5.5V - Allows direct interfacing with 5V CMOS/TTL logic without level shifters or clamping diodes. |
| Bus-Hold Current | ±75µA to ±150µA - Actively holds unused A-side inputs at valid logic levels, eliminating need for external pull-up resistors. |
| ICCZ Quiescent Current | 0.13mA max at VCC=3.6V - Minimizes standby power in always-on subsystems such as backplane controllers or I/O expanders. |
| fMAX Clock Frequency | 150MHz at VCC=3.3V - Enables synchronous register updates at speeds suitable for fast peripheral bridging and FIFO interfaces. |
Pinout & Package
TSSOP-24 plastic thin shrink small outline package (SOT355-1), 4.4mm body width, 0.65mm lead pitch, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 23 | CPAB / CPBA | A→B and B→A clock inputs - Edge-triggered latching enables independent register loading per bus direction. |
| 2, 22 | SAB / SBA | Select inputs - Determine whether output reflects real-time bus data or stored register contents. |
| 3, 21 | OEAB / OEBA | Output Enable (A→B active-High; B→A active-Low) - Provides asymmetric enable logic for flexible bus arbitration schemes. |
| 4–11 | A0–A7 | Bidirectional I/O (A side) - Data pins with bus-hold on inputs; support both input capture and registered output sourcing. |
| 13–20 | B0–B7 | Bidirectional I/O (B side) - Mirror function to A-side; fully symmetrical for bidirectional data mirroring or translation. |
| 12 | GND | Ground reference - Dedicated low-impedance return path for signal integrity and EMI control. |
| 24 | VCC | 3.3V power supply - Single-supply operation simplifies power delivery; internal regulation not required. |
Key Features
| Feature | Design Value |
|---|---|
| Independent A/B registers | Enables concurrent storage of two distinct 8-bit data sets, supporting ping-pong buffering or dual-bus snapshotting. |
| Multiplexed real-time/stored data | Per-pin select control (SAB/SBA) allows dynamic switching between live bus monitoring and registered data replay without reconfiguration. |
| Bus-hold on A inputs | Eliminates external pull-up resistors on unused A-side pins, reducing BOM count and PCB area in sparse I/O configurations. |
| Live insertion/extraction support | Power-up 3-State and latch-up protection (>500mA) allow safe hot-plug operation in modular backplanes and field-replaceable units. |
| 5V-tolerant I/O | Input voltage range up to 5.5V and output clamp protection permit direct connection to 5V systems without level-shifting circuitry. |
Applications
| Memory Interface Bridge | Hot-Swappable Backplane Controller |
|---|---|
|
Use Scenario: Interfacing a 3.3V microcontroller to legacy 5V SRAM or EPROM modules with asynchronous timing. IC Role / Device Role / Timing Role: Bidirectional data transceiver with registered write strobes and real-time read paths, synchronized to CPU address/data cycles. Use Value: Eliminates discrete level shifters and glue logic; bus-hold prevents floating data lines during CPU reset or wait-state insertion. |
Use Scenario: Managing data flow between hot-pluggable I/O modules and a central 3.3V host controller in industrial PLC racks. IC Role / Device Role / Timing Role: Isolation and buffering element with live-insertion-safe 3-State control, preventing bus contention during module insertion/removal. Use Value: Power-up 3-State and latch-up immunity ensure no glitch or short-circuit risk during hot-swap events; ±64mA drive sustains signal integrity across long backplane traces. |
| Multi-Protocol Peripheral Adapter | Legacy Bus Extender |
|
Use Scenario: Adapting a single 3.3V SoC to drive multiple 5V peripherals (e.g., UART, SPI, parallel port) with mixed timing requirements. IC Role / Device Role / Timing Role: Configurable register/transceiver providing programmable data staging, direction control, and timing isolation per peripheral. Use Value: Dual-clock inputs (CPAB/CPBA) and select pins (SAB/SBA) enable independent timing alignment for each attached protocol without FPGA logic. |
Use Scenario: Extending an aging 5V ISA or VME bus with modern 3.3V logic while preserving signal integrity and timing margins. IC Role / Device Role / Timing Role: Level-translating transceiver with registered data capture, decoupling legacy bus timing from new controller clocks. Use Value: 2.6ns An↔Bn propagation delay ensures minimal added latency; 5V-tolerant inputs accept legacy bus signals directly, avoiding signal degradation from passive dividers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transceiver/register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74ALVC162245DGG | 16-bit, dual-supply (1.65–3.6V), no internal registers or bus-hold; requires external level shifting for 5V I/O. | Lacks clocked register functionality and 5V-tolerance; suited only for pure 3.3V↔3.3V bidirectional buffering. | Choose when higher channel count is needed and register/staging features are unnecessary. |
| SN74LVC8T245RHLR | 8-bit, single-supply (1.65–5.5V), no internal registers, no bus-hold, but supports true 5V-tolerant I/O on both sides. | Provides simpler real-time transceivers without storage; lacks multiplexed real-time/stored mode or independent clocking. | Prefer for cost-sensitive, register-free 3.3V↔5V translation where timing is purely combinatorial. |
Compared with 74LVT652PW,118, the 74ALVC162245DGG offers double the width but omits registers and bus-hold, increasing system-level complexity; the SN74LVC8T245RHLR provides broader voltage flexibility but sacrifices data staging and hot-swap safety features essential for controlled bus arbitration.
Availability
74LVT652PW,118 is available at Aetrix Electronics and suitable for memory interface bridges, hot-swappable backplane controllers, multi-protocol peripheral adapters, legacy bus extenders, and industrial I/O expanders requiring stable component supply and long-term lifecycle continuity.
Supply support for 74LVT652PW,118 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
NXP Semiconductors, formerly Philips Semiconductors, is a global leader in high-performance analog and logic ICs, with core expertise in automotive, industrial, and communication semiconductor solutions.
The 74LVT652PW,118 belongs to the LVT (Low-Voltage Technology) logic family, designed specifically for high-speed, low-power 3.3V system interfacing with backward compatibility to 5V logic environments.
FAQ
What is the maximum clock frequency supported by the 74LVT652PW,118?
The 74LVT652PW,118 supports a maximum clock frequency of 150MHz at VCC = 3.3V ± 0.3V over the full operating temperature range (–40°C to +85°C). This specification applies to CPAB and CPBA inputs and is validated under AC test conditions with CL = 50pF and RL = 500Ω. At reduced supply voltages (e.g., VCC = 2.7V), the maximum frequency drops to 120MHz per the AC Characteristics table.
Does the 74LVT652PW,118 require external pull-up resistors on unused inputs?
No, the 74LVT652PW,118 does not require external pull-up resistors on its A-side inputs because it integrates bus-hold circuitry with ±75µA to ±150µA overdrive current. This feature actively maintains the last-valid logic state on un-driven A0–A7 pins, eliminating floating inputs and associated noise susceptibility. Bus-hold is not implemented on B-side inputs.
Can the 74LVT652PW,118 interface directly with 5V logic systems?
Yes, the 74LVT652PW,118 supports direct interfacing with 5V logic systems: its inputs tolerate up to 5.5V (VI), and its outputs are specified for 5V bus termination (no bus current loading when tied to 5V). Output voltage levels meet TTL thresholds (VOH ≥ 2.4V, VOL ≤ 0.5V) at 3.3V supply, ensuring reliable recognition by 5V receivers without level shifters.
What is the purpose of the SAB and SBA pins on the 74LVT652PW,118?
The SAB (Select A-to-B) and SBA (Select B-to-A) pins determine whether the 74LVT652PW,118 outputs reflect real-time bus data or stored register contents. When SAB = High, B-side outputs reflect data latched into the A-register; when SAB = Low, they reflect real-time A-bus data. SBA operates identically for A-side outputs. This enables dynamic switching between live monitoring and buffered data replay.
Is the 74LVT652PW,118 suitable for hot-swap applications?
Yes, the 74LVT652PW,118 is explicitly designed for hot-swap use: it features power-up 3-State (outputs remain disabled until VCC stabilizes), live insertion/extraction permission, and latch-up protection exceeding 500mA per JEDEC Std 17. These characteristics prevent bus contention, ground bounce, or destructive current surges during module insertion or removal in powered-backplane systems.
74LVT652PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVT
- Package/Case:
- 24-TSSOP (0.173", 4.40mm 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:
- 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
74LVT652PW,118 FAQ
1.How can I place an order for 74LVT652PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT652PW,118 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 74LVT652PW,118 reliable?
The price and inventory of 74LVT652PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT652PW,118 is usually 5 days.
3.What payment methods are accepted for 74LVT652PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT652PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT652PW,118?
74LVT652PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT652PW,118 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 74LVT652PW,118?
For technical support, including 74LVT652PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT652PW,118 requirements.
6.How does Aetrix verify that 74LVT652PW,118 is sourced from the original manufacturer or authorized distributors?
All 74LVT652PW,118 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 74LVT652PW,118 meets industry standards.
7.What is the process for return or replacement of 74LVT652PW,118?
All 74LVT652PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT652PW,118, 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 74LVT652PW,118 part is unused and in its original packaging.
Return procedure for 74LVT652PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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