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Nexperia USA Inc. 74LVCH2T45DC-Q100H
- Part No.:
- 74LVCH2T45DC-Q100H
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
74LVCH2T45DC-Q100H.pdf
- Description:
- IC TRANSLTR BIDIRECTIONAL 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,965
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Product details
Overview
74LVCH2T45DC-Q100 from Nexperia is an automotive-grade dual-bit, dual-supply translating transceiver with 3-state outputs and active bus hold circuitry. It enables bidirectional level translation between independent voltage domains (1.2 V to 5.5 V), supports AEC-Q100 Grade 1 qualification (−40 °C to +125 °C), and features IOFF partial power-down protection. It is used in automotive infotainment domain controllers interfacing 1.8 V SoCs with 3.3 V CAN/FlexRay PHYs.
For engineers reviewing the 74LVCH2T45DC-Q100 datasheet, 74LVCH2T45DC-Q100 pinout, 74LVCH2T45DC-Q100 application, or 74LVCH2T45DC-Q100 equivalent, key selection criteria include dual-rail voltage flexibility, suspend-mode high-impedance behavior during power sequencing, bus hold functionality for floating inputs, and verified 210 Mbps data rate at 3.3 V translation.
Technical Context
The device implements a direction-controlled bidirectional data path using two independent supply rails: VCC(A) powers port A and DIR input, while VCC(B) powers port B. A HIGH on DIR enables A→B transmission; LOW enables B→A. Both ports support 3-state output control and retain high-impedance OFF-state when either supply is at GND.
Its IOFF circuitry disables outputs and blocks backflow current during partial power-down, and integrated bus hold circuitry actively maintains valid logic levels on unused A/B port inputs without external pull resistors-critical for automotive ECU signal integrity during sleep/wake transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Range (VCC(A)/VCC(B)) | 1.2 V to 5.5 V each - enables translation across 1.2/1.5/1.8/2.5/3.3/5.0 V logic domains |
| Max Data Rate | 210 Mbps (3.3 V translation) - supports high-speed serial interconnects like I²C fast-mode plus or GPIO expansion |
| Propagation Delay (A→B) | 1.4 ns min / 11.9 ns max at 3.3 V - ensures timing margin in sub-10 ns critical paths |
| IOFF Leakage Current | ±2 μA max - prevents damaging back-current during asymmetric power sequencing in automotive modules |
| Bus Hold Drive | ±100 μA at 4.5 V - actively holds floating inputs without external components, reducing BOM count |
| ESD Protection | HBM >4000 V, CDM >1000 V - meets stringent automotive board-level ESD robustness requirements |
| Ambient Temp Range | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and cockpit applications |
Pinout & Package
VSSOP8 package (SOT765-1), 2.3 mm body width, 0.5 mm pitch, 8-lead plastic very thin shrink small outline package.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC(A) | Supply for port A and DIR input - must be stable before enabling direction control |
| 2 | 1A | Port A bit 1 I/O - bidirectional data line referenced to VCC(A) |
| 3 | 2A | Port A bit 2 I/O - shares VCC(A) reference and bus hold with 1A |
| 4 | GND | Digital ground return - common reference for both supply domains |
| 5 | DIR | Direction control input - HIGH = A→B, LOW = B→A; referenced to VCC(A) |
| 6 | 2B | Port B bit 2 I/O - bidirectional data line referenced to VCC(B) |
| 7 | 1B | Port B bit 1 I/O - shares VCC(B) reference and bus hold with 2B |
| 8 | VCC(B) | Supply for port B - independent of VCC(A); enables true dual-voltage operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation in automotive ECUs and ADAS sensor hubs |
| Active bus hold circuitry | Eliminates need for external pull-up/pull-down resistors on A/B ports, reducing layout area and cost |
| IOFF partial power-down | Prevents current backflow when either VCC(A) or VCC(B) is unpowered - essential for safe power sequencing |
| Suspend mode | Both ports enter high-impedance state when either supply drops to GND - avoids signal contention during wake-up |
| JEDEC-compliant voltage translation | Meets JESD8-7 (1.2–1.95 V), JESD8-5 (1.8–2.7 V), JESD8C (2.7–3.6 V), and JESD36 (4.5–5.5 V) |
Applications
| Automotive Infotainment Gateway | ADAS Camera Interface Bridge |
|---|---|
|
Use Scenario: Interfacing a 1.8 V application processor with 3.3 V LVDS serializer/deserializer in head-unit display subsystems. IC Role / Device Role / Timing Role: Bidirectional voltage translator managing I²C configuration and GPIO status signals between domains. Use Value: Eliminates discrete level-shifter arrays; bus hold prevents glitches during processor reset sequences. |
Use Scenario: Connecting a 2.5 V image sensor MIPI CSI-2 D-PHY receiver to a 3.3 V automotive Ethernet switch controller. IC Role / Device Role / Timing Role: Translating low-speed control lines (reset, clock enable, interrupt) with sub-12 ns propagation delay. Use Value: IOFF protection prevents backfeed into powered-down sensor during vehicle sleep mode. |
| Body Control Module (BCM) Signal Aggregation | Electric Power Steering (EPS) MCU Interface |
|
Use Scenario: Consolidating 1.2 V microcontroller GPIOs with 5.0 V legacy LIN transceivers and lamp drivers. IC Role / Device Role / Timing Role: Dual-bit translator handling bidirectional LIN bus arbitration signals and status feedback. Use Value: Suspend mode ensures high-Z isolation when BCM main MCU powers down but 5 V rail remains active. |
Use Scenario: Isolating 3.3 V EPS motor control MCU from 1.5 V torque sensor ADC interface lines. IC Role / Device Role / Timing Role: Level-shifting SPI clock/data lines while maintaining <10 ns skew between SCLK and MOSI. Use Value: Verified 140 Mbps capability at 2.5 V translation supports oversampling ADC readout timing. |
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 |
|---|---|---|---|
| SN74AVC2T245RSWR | No bus hold; IOFF only on A-side; max 1.8 V to 3.3 V (not 1.2 V) | Lacks AEC-Q100 qualification; rated −40 °C to +85 °C only | Use where automotive temperature range and bus hold are not required; lower cost in industrial designs |
| TXS0102DCTT | Auto-direction sensing (no DIR pin); higher ICC (20 μA vs 16 μA); no suspend mode | Not AEC-Q100 qualified; lacks IOFF on B-side; unsuitable for asymmetric power-down scenarios | Select only for simple 1.8 V ↔ 3.3 V I²C translation with fixed direction; avoid in safety-critical power sequencing |
Compared with SN74AVC2T245RSWR and TXS0102DCTT, the 74LVCH2T45DC-Q100 uniquely combines AEC-Q100 Grade 1, full dual-rail IOFF, active bus hold, and suspend mode - making it the only option for automotive systems requiring guaranteed high-Z isolation during mixed-rail power transitions.
Availability
74LVCH2T45DC-Q100 is available at Aetrix Electronics and suitable for automotive infotainment gateways, ADAS camera interface bridges, and body control modules requiring stable component supply across extended temperature and dual-voltage operation.
Supply support for 74LVCH2T45DC-Q100 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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVCH2T45DC-Q100 belongs to Nexperia's automotive-qualified LVC/LVCH logic family, designed specifically for robust bidirectional voltage translation in safety-critical automotive subsystems with strict power sequencing and ESD requirements.
FAQ
What is the minimum supply voltage supported on VCC(A) and VCC(B)?
The 74LVCH2T45DC-Q100 supports VCC(A) and VCC(B) down to 1.2 V each, enabling direct interfacing with ultra-low-voltage cores such as ARM Cortex-M0+ running at 1.2 V, while simultaneously connecting to 3.3 V peripherals - no intermediate regulators needed.
Does the device support simultaneous operation at different supply voltages?
Yes - VCC(A) and VCC(B) operate independently; one can be set to 1.8 V while the other is at 5.0 V. The DIR input is referenced solely to VCC(A), and all A-port signals are referenced to VCC(A), ensuring correct logic thresholds regardless of B-side voltage.
How does the bus hold function behave during suspend mode?
Bus hold remains active on both A and B ports even when either VCC(A) or VCC(B) is at GND, provided the respective supply is present. If VCC(A) = GND, bus hold on port A is disabled, but port B retains bus hold if VCC(B) is powered - preventing floating states during staged power-up.
Can the DIR pin be driven by a 3.3 V controller when VCC(A) = 1.8 V?
No - DIR is referenced to VCC(A), so its VIH/VIL thresholds scale with VCC(A). Driving DIR with 3.3 V while VCC(A) = 1.8 V violates absolute maximum ratings (VI > VCC(A) + 0.5 V) and risks latch-up. A level-shifter or VCC(A)-referenced GPIO must be used.
74LVCH2T45DC-Q100H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVCH
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 2
- Voltage - VCCA:
- 1.2 V ~ 5.5 V
- Voltage - VCCB:
- 1.2 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- 420Mbps
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VFSOP (0.091", 2.30mm Width)
74LVCH2T45DC-Q100H FAQ
1.How can I place an order for 74LVCH2T45DC-Q100H through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCH2T45DC-Q100H 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 74LVCH2T45DC-Q100H reliable?
The price and inventory of 74LVCH2T45DC-Q100H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCH2T45DC-Q100H is usually 5 days.
3.What payment methods are accepted for 74LVCH2T45DC-Q100H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCH2T45DC-Q100H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCH2T45DC-Q100H?
74LVCH2T45DC-Q100H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCH2T45DC-Q100H 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 74LVCH2T45DC-Q100H?
For technical support, including 74LVCH2T45DC-Q100H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCH2T45DC-Q100H requirements.
6.How does Aetrix verify that 74LVCH2T45DC-Q100H is sourced from the original manufacturer or authorized distributors?
All 74LVCH2T45DC-Q100H 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 74LVCH2T45DC-Q100H meets industry standards.
7.What is the process for return or replacement of 74LVCH2T45DC-Q100H?
All 74LVCH2T45DC-Q100H units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCH2T45DC-Q100H, 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 74LVCH2T45DC-Q100H part is unused and in its original packaging.
Return procedure for 74LVCH2T45DC-Q100H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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