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NXP Semiconductors 74LVCH2T45GD,125
- Part No.:
- 74LVCH2T45GD,125
- Manufacturer:
- NXP Semiconductors
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74LVCH2T45GD,125.pdf
- Description:
- TXRX TRANSLATING 3ST XSON8U
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
74LVCH2T45GD,125 from Nexperia is a dual-bit, dual-supply translating transceiver with 3-state outputs enabling bidirectional level translation between 1.2 V and 5.5 V domains. It features independent VCC(A) and VCC(B) supplies, DIR-controlled data direction (A↔B), and active bus hold on I/O ports. Used in mixed-voltage FPGA-to-processor interconnects requiring voltage domain bridging without external logic.
For engineers reviewing the 74LVCH2T45GD,125 datasheet, 74LVCH2T45GD,125 pinout, 74LVCH2T45GD,125 application, or 74LVCH2T45GD,125 equivalent, key selection criteria include dual-supply translation range (1.2–5.5 V), IOFF-enabled partial power-down, bus hold functionality, and 8-pin XSON package compatibility with high-density PCB layouts.
Technical Context
This device implements a dual-port bidirectional translation architecture where port A (pins 1A, 2A, VCC(A), DIR) is referenced to VCC(A), and port B (pins 1B, 2B, VCC(B)) to VCC(B). Direction control is synchronous and edge-independent: DIR = HIGH enables A→B transmission; DIR = LOW enables B→A transmission.
Suspend mode activates when either VCC(A) or VCC(B) = GND, forcing both ports into high-impedance OFF-state. The integrated bus hold circuit maintains valid logic levels on floating inputs (19 μA typical hold current at 1.2 V), eliminating need for external pull resistors in unused I/O scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCC(A)/VCC(B)) | 1.2 V to 5.5 V - supports translation across all common low-voltage nodes (1.2/1.5/1.8/2.5/3.3/5.0 V). |
| Max Data Rate | 420 Mbps (3.3 V ↔ 5.0 V) - enables high-speed interface bridging in DDR memory controllers and peripheral buses. |
| IOFF Leakage | <±2 μA at -40 °C to +125 °C - ensures safe partial power-down during system sleep without backflow current damage. |
| Bus Hold Current | ±19 μA typical at 1.2 V - actively holds floating inputs at valid logic levels, removing need for external biasing. |
| Propagation Delay | Min 0.4 ns / Max 48.6 ns (temp/voltage dependent) - guarantees timing predictability in synchronous digital interconnects. |
| ESD Protection | HBM >4000 V, CDM >1000 V - meets industrial-grade robustness requirements for board-level handling and operation. |
| Operating Temperature | -40 °C to +125 °C - qualified for automotive under-hood and industrial motor-control applications. |
Pinout & Package
XSON8 package (SOT1116), 1.2 × 1.0 × 0.35 mm body, no leads, 8-terminal surface-mount design optimized for space-constrained layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC(A) | Supply for port A and DIR input - defines logic thresholds and drive strength for A-side signals. |
| 2 | 1B | Data I/O terminal for port B - bidirectionally connected to 1A when DIR enables B→A path. |
| 3 | 2B | Data I/O terminal for port B - bidirectionally connected to 2A when DIR enables B→A path. |
| 4 | VCC(B) | Supply for port B - sets output voltage swing and input threshold for B-side signals. |
| 5 | DIR | Direction control input referenced to VCC(A) - HIGH = A→B, LOW = B→A; asynchronous, no setup/hold required. |
| 6 | 2A | Data I/O terminal for port A - bidirectionally connected to 2B when DIR enables A→B path. |
| 7 | 1A | Data I/O terminal for port A - bidirectionally connected to 1B when DIR enables A→B path. |
| 8 | GND | Common reference ground - mandatory connection for noise immunity and proper IOFF/suspend behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent supply rails | VCC(A) and VCC(B) each configurable from 1.2 V to 5.5 V - eliminates need for external level shifters in heterogeneous SoC interfaces. |
| IOFF partial power-down | Automatic output disable when either VCC is at GND - prevents back-current in hot-plug or power-gated subsystems. |
| Integrated bus hold | Active clamping on all I/O pins (19 μA hold current at 1.2 V) - removes external pull-up/down components and reduces BOM count. |
| High noise immunity | Meets JEDEC JESD8-7/8-5/8C/36 standards - ensures reliable operation in electrically noisy industrial and automotive environments. |
| Ultra-small XSON8 footprint | 1.2 × 1.0 mm body, 0.35 mm height - enables routing in tight spaces beneath BGAs or in wearable sensor modules. |
Applications
| Industrial PLC I/O Modules | FPGA-to-MCU Voltage Bridging |
|---|---|
|
Use Scenario: Interfacing 3.3 V FPGA I/O banks with legacy 5.0 V sensor signal conditioning circuits in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional level translator managing real-time analog-to-digital control loop feedback paths with sub-10 ns propagation delay. Use Value: Eliminates discrete resistor-divider networks while maintaining timing integrity and reducing PCB area by >70% versus discrete solutions. |
Use Scenario: Connecting 1.8 V FPGA configuration I/O to 2.5 V microcontroller debug and boot interfaces in embedded reconfigurable systems. IC Role / Device Role / Timing Role: Dual-supply transceiver enabling simultaneous bidirectional JTAG/SWD communication across voltage domains without protocol overhead. Use Value: Enables zero-latency debug access during FPGA partial reconfiguration, preserving system uptime and simplifying firmware update workflows. |
| Automotive ADAS Camera Links | USB-C Power Delivery Negotiation |
|
Use Scenario: Level-shifting control signals between 1.2 V image sensor processors and 3.3 V automotive infotainment SoCs in rear-view camera modules. IC Role / Device Role / Timing Role: Transceiver managing I²C-based sensor register access and status reporting with IOFF protection during camera power cycling. Use Value: Prevents latch-up during cold-cranking events and ensures fail-safe I²C bus recovery after transient brownouts. |
Use Scenario: Translating USB PD BMC signaling between 3.3 V PD controller and 5.0 V power switch gate drivers in compact USB-C wall adapters. IC Role / Device Role / Timing Role: Bidirectional translator supporting 300 kbps BMC physical layer with precise edge alignment and bus hold on idle lines. Use Value: Guarantees deterministic BMC waveform fidelity across voltage domains, meeting USB-IF compliance test requirements for PD 3.1. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply translating transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVCH2T45RSWR | TI part with identical 2-bit dual-supply architecture but higher ICC (max 25 μA vs. 16 μA) and no bus hold. | Lacks integrated bus hold - requires external pull resistors for unused I/O; wider temp range (-40 °C to +125 °C same). | Select when lower static power is non-critical and external biasing is acceptable for cost-sensitive designs. |
| TXS0102DCUR | Texas Instruments auto-direction-sensing variant; no DIR pin, relies on data flow detection; max 1.8 V VCCA, 5.5 V VCCB. | Eliminates DIR control line but adds latency (~200 ns) and limits low-side supply to 1.8 V - unsuitable for 1.2 V or 2.5 V A-side use. | Choose only for simple unidirectional or low-speed bidirectional links where DIR pin routing is impractical. |
Compared with SN74AVCH2T45RSWR and TXS0102DCUR, the 74LVCH2T45GD,125 uniquely combines ultra-low ICC (16 μA), integrated bus hold, and full 1.2–5.5 V flexibility on both rails - making it optimal for space- and power-constrained mixed-voltage systems requiring deterministic control.
Availability
74LVCH2T45GD,125 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive ADAS camera links, FPGA-to-MCU voltage bridging, and USB-C power delivery negotiation requiring stable component supply across extended temperature ranges.
Supply support for 74LVCH2T45GD,125 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
Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency and miniaturization.
The 74LVCH2T45GD,125 belongs to Nexperia's LVC/LVCH logic family, engineered specifically for low-voltage, mixed-rail system interfacing in automotive, industrial, and computing applications demanding robust level translation.
FAQ
Can 74LVCH2T45GD,125 operate with VCC(A) = 1.2 V and VCC(B) = 5.0 V simultaneously?
Yes. The device is fully specified for simultaneous operation across its entire supply range: VCC(A) and VCC(B) may independently be set from 1.2 V to 5.5 V. At this combination, maximum data rate is 420 Mbps, and propagation delays remain within datasheet limits (e.g., tPLH ≤ 5.1 ns for A→B path at 25 °C).
Does the bus hold function work when VCC(A) or VCC(B) is unpowered?
No. Bus hold is active only when its associated supply rail is powered. If VCC(A) = 0 V, bus hold on pins 1A, 2A, and DIR is disabled; if VCC(B) = 0 V, bus hold on 1B and 2B is disabled. In suspend mode (either VCC = GND), all I/O enter high-impedance state regardless of input voltage.
What is the minimum pulse width required on DIR to guarantee direction change?
No minimum pulse width is specified - DIR is level-sensitive, not edge-triggered. A stable HIGH or LOW level on DIR immediately configures the direction path. Propagation delay from DIR transition to output enable/disable is specified as tPHZ/tPLZ (e.g., 2.5 ns min to 12.2 ns max depending on VCC conditions).
Is 74LVCH2T45GD,125 compatible with JEDEC JESD8-7 for 1.2 V interfaces?
Yes. The device complies with JEDEC JESD8-7 (1.2 V to 1.95 V), JESD8-5 (1.8 V to 2.7 V), JESD8C (2.7 V to 3.6 V), and JESD36 (4.5 V to 5.5 V), ensuring interoperability with standard low-voltage logic families across its full operating range.
74LVCH2T45GD,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVCH
- Package/Case:
- Packaging:
- Bulk
- Product Status:
- Active
- Translator Type:
- -
- Channel Type:
- -
- Number of Circuits:
- -
- Channels per Circuit:
- -
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- -
- Data Rate:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74LVCH2T45GD,125 FAQ
1.How can I place an order for 74LVCH2T45GD,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH2T45GD,125 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 74LVCH2T45GD,125 reliable?
The price and inventory of 74LVCH2T45GD,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH2T45GD,125 is usually 5 days.
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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 74LVCH2T45GD,125?
For technical support, including 74LVCH2T45GD,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH2T45GD,125 requirements.
6.How does Aetrix verify that 74LVCH2T45GD,125 is sourced from the original manufacturer or authorized distributors?
All 74LVCH2T45GD,125 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 74LVCH2T45GD,125 meets industry standards.
7.What is the process for return or replacement of 74LVCH2T45GD,125?
All 74LVCH2T45GD,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH2T45GD,125, 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 74LVCH2T45GD,125 part is unused and in its original packaging.
Return procedure for 74LVCH2T45GD,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVCH2T45GD,125 Tags
-
74LVC1T45GW,125
Nexperia USA Inc.
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74LVCH2T45DC,125
Nexperia USA Inc.
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SN74LVC1T45DBVR
Texas Instruments
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SN74LVC1T45DPKR
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SN74LVC2T45DCTR
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74LVC2T45GT,115
Nexperia USA Inc.
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SN74LVC1T45YZPR
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SN74LVC1T45DCKR
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TXS0102DCTR
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