TXG4042-Q1 - Automotive ±40V 4-bit Ground-Level Translator | TI
N.º da peça: TXG4042-Q1 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.45 | $2,45 |
| 10 | $2.18 | $21,80 |
| 100 | $1.92 | $192,00 |
| 500 | $1.71 | $855,00 |
| 1.000 | $1.52 | $1.520,00 |
| 3.000 | $1.36 | $4.080,00 |
TXG4042-Q1 Visão geral
A ground-level translator (also called a ground-level shifter) is a specialized class of voltage level translator that operates correctly even when the local ground reference of the input side differs substantially from the local ground reference of the output side. Unlike generic level shifters that only translate voltage thresholds, ground-level translators reject large common-mode DC offsets (typically ±25V to ±50V) between the two sides. This category of IC sits within the broader hierarchy of voltage translators -> interface ICs -> signal conditioning -> integrated circuits. They are essential in safety, motor-control, and renewable-energy systems where isolated high-side circuitry must communicate with low-voltage digital controllers over short, non-isolated links.
Key features include robust ±40V DC ground-shift tolerance, high AC noise rejection of 130 VPP at 1 MHz, excellent 1 kV/μs CMTI for fast switching transients, push-pull output drivers with edge acceleration for clean edges at high data rates, and a wide 1.71 V to 5.5 V supply range on the low-voltage side. The fixed 2/2 direction (2 inputs / 2 outputs in one direction, 2 in the other) simplifies firmware and eliminates direction-control pins, reducing BOM cost and PCB area. AEC-Q100 qualification makes the TXG4042-Q1 suitable for automotive temperature grade 1 (-40 °C to +125 °C) operation.
Architecturally, the TXG4042-Q1 uses TI's capacitorless, two-channel ground-shift topology with internal high-voltage blocking transistors on each channel. The high-voltage side tolerates continuous DC offsets via integrated clamping and ESD structures, while the input/output structures on the low-voltage side are optimized for sub-5 V CMOS logic levels. The device requires no external bootstrap capacitors, inductors, or programming resistors, simplifying PCB layout and reducing BOM count compared to digital isolator-based alternatives.
Typical applications include EV traction inverter gate-driver communication, automotive HVAC and body controllers interfacing with high-side sensors, industrial PLC mixed-voltage I/O links, solar inverter string-monitoring interfaces, and battery-management system (BMS) communications across isolated high-voltage domains. It is also well-suited for medical imaging systems, white-goods motor drives, and any application requiring safe digital communication across non-isolated grounds with significant DC offset.
When designing with the TXG4042-Q1, ensure the high-voltage side stays within ±40 V relative to the local ground. Place the VCC bypass capacitor as close as possible to the supply pin to maintain noise margins, and avoid long high-side traces to minimize parasitic coupling. For multi-channel applications, observe the 2 ns channel-to-channel skew budget to preserve signal alignment at the receiver.
This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes that extend beyond the manufacturer datasheet, giving engineers actionable sourcing and design guidance in one place.
Alternativas drop-in para TXG4042-Q1 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
TXG4042
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TXG4040-Q1
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TXG4041-Q1
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TXG4042QDBQRQ1
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TXG4042-Q1 Especificações
| Translator Type | Ground-level voltage level translator (fixed direction) |
| Number of Channels | 4 |
| Direction Configuration | 2 inputs / 2 outputs (2/2) |
| DC Ground Shift Tolerance | ±40 V |
| AC Noise Rejection | 130 VPP at 1 MHz |
| Common-Mode Transient Immunity (CMTI) | 1 kV/μs |
| Maximum Propagation Delay | 8.5 ns |
| Maximum Channel-to-Channel Skew | 2 ns |
| Maximum Data Rate | 100 Mbps |
| Supply Voltage Range (VCC) | 1.71 V to 5.5 V |
| Quiescent Current per Channel | 0.7 mA at 1 Mbps, 1.8 V |
| Output Driver Type | Push-pull |
| Faixa de temperatura de operação | -40 °C to +125 °C (AEC-Q100 Grade 1) |
| Encapsulamento | 16-pin SSOP (DBQ) |
| Automotive Qualification | AEC-Q100 qualified |
| Status RoHS | Compliant |
| Output Channels | Bidirectional per channel; fixed 2/2 direction |
Configuração de pinos do TXG4042-Q1
| Pino 1 | VCC — Low-voltage supply (1.71 V to 5.5 V) |
| Pino 2 | GND — Low-voltage ground reference |
| Pino 3 | IN1 — Input channel 1 (low-voltage side) |
| Pino 4 | IN2 — Input channel 2 (low-voltage side) |
| Pino 5 | NC — Not connected (per datasheet) |
| Pino 6 | NC — Not connected (per datasheet) |
| Pino 7 | OUT1_HV — Output channel 1 (high-voltage side, ±40 V tolerant) |
| Pino 8 | OUT2_HV — Output channel 2 (high-voltage side, ±40 V tolerant) |
| Pino 9 | HV_GND — High-voltage side ground reference (may be offset ±40 V) |
| Pino 10 | NC — Not connected (per datasheet) |
| Pino 11 | NC — Not connected (per datasheet) |
| Pino 12 | IN3_HV — Input channel 3 (high-voltage side, ±40 V tolerant) |
| Pino 13 | IN4_HV — Input channel 4 (high-voltage side, ±40 V tolerant) |
| Pino 14 | OUT3 — Output channel 3 (low-voltage side) |
| Pino 15 | OUT4 — Output channel 4 (low-voltage side) |
| Pino 16 | HV_REF — High-voltage side reference / supply |
Aplicações típicas
TXG4042-Q1 é adequado para 6 aplicaçãos: EV Traction Inverter Gate-Driver Communication, Automotive HVAC and Body Control High-Side Interfaces, Industrial PLC Mixed-Voltage I/O Links, Solar Inverter String-Monitoring Interfaces, Battery-Management System (BMS) High-Voltage Domain Communications, White-Goods and Appliance Motor Drives.
EV Traction Inverter Gate-Driver Communication
The TXG4042-Q1's ±40 V DC ground-shift tolerance and 1 kV/μs CMTI make it well matched for communicating PWM control signals between a low-voltage MCU and the high-side gate drivers of an EV traction inverter. In this application the high-side ground can sit tens of volts above the chassis/control ground during switching transients; the translator rejects that offset while delivering 100 Mbps data rates for fault feedback and status signals. Place the TXG4042-Q1 close to the gate-driver board interface with a 0.1 μF VCC bypass; expect propagation delay around 8.5 ns, which is negligible compared to typical inverter PWM timing budgets of several hundred nanoseconds.
Recomendado
Automotive HVAC and Body Control High-Side Interfaces
The TXG4042-Q1's AEC-Q100 Grade 1 qualification and 4-channel 2/2 fixed-direction topology suit body-control modules that need to read multiple high-side sensors and drive indicator LEDs. Its 1.71 V to 5.5 V supply range lets it connect directly to modern 3.3 V or 5 V MCUs, while the high-voltage side tolerates the ±28 V load-dump and reverse-battery conditions common in 12 V automotive buses. The fixed direction eliminates direction-control GPIO and firmware, freeing pins on the MCU. Designers should budget 0.7 mA per channel quiescent draw and account for 2 ns channel skew when sampling multiple sensor inputs synchronously.
Recomendado
Industrial PLC Mixed-Voltage I/O Links
Industrial PLCs often mix 24 V digital I/O with 3.3 V or 5 V control logic, and the field-side ground can sit tens of volts away from the controller ground due to long cable runs. The TXG4042-Q1's ±40 V ground-shift tolerance bridges this gap with 100 Mbps throughput, suitable for digital input modules, encoder feedback, and isolated solenoid control. Its push-pull output drives long cables cleanly, and the 130 VPP AC noise rejection at 1 MHz suppresses common-mode noise from adjacent motor power wiring. Use it between the PLC backplane logic and the field-side optocoupler or sensor cluster; expect clean logic transitions across the full -40 °C to +125 °C industrial temperature range.
Recomendado
Solar Inverter String-Monitoring Interfaces
In solar string monitors the high-side ground reference can swing widely as panel strings switch in and out, especially with module-level power electronics. The TXG4042-Q1's ±40 V tolerance and 1 kV/μs CMTI let it transmit monitoring data reliably between the high-side current/voltage sensors and the low-voltage MCU, with 100 Mbps bandwidth sufficient for synchronized multi-string sampling. Its push-pull driver handles the long PCB traces typical of string-monitoring boards, and the AEC-Q100 rating is a bonus for outdoor equipment reliability. Place a 0.1 μF bypass close to VCC and route the high-side traces symmetrically to minimize channel-to-channel skew.
Recomendado
Battery-Management System (BMS) High-Voltage Domain Communications
Battery-management systems must communicate between low-voltage MCUs and high-voltage cell-monitoring ASICs with grounds that differ by the full pack voltage during transient events. The TXG4042-Q1's ±40 V DC ground tolerance and 130 VPP AC noise rejection cover these conditions while delivering the 100 Mbps data rate needed for multi-cell voltage sampling synchronization. The fixed 2/2 direction simplifies firmware and PCB layout, and the AEC-Q100 rating ensures reliable operation across automotive battery temperature ranges. Use it between the master BMS MCU and the high-voltage cell-monitor IC, keeping high-side traces short and symmetric to minimize propagation-delay variation across channels.
Recomendado
White-Goods and Appliance Motor Drives
Washing machines, dishwashers, and refrigerator compressors often use 3-phase motor drives whose high-side ground shifts during PWM switching. The TXG4042-Q1 acts as a robust digital-link bridge between the appliance MCU and the inverter control board, with ±40 V ground tolerance covering the worst-case switching transients. Its 100 Mbps data rate supports modern FOC algorithm feedback loops, and the AEC-Q100 qualification provides extra reliability margin for appliances with long service-life expectations. Place the translator near the inverter connector and add TVS diodes on the high-side traces to extend ESD protection beyond the device's internal ratings.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TXG4042-Q1 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | TXG4042 | TXG4040-Q1 | TXG4041-Q1 | TXG4042QDBQRQ1 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SSOP-16 (DBQ) | SSOP-16 (DBQ) - same | SSOP-16 (DBQ) - same | SSOP-16 (DBQ) - same | SSOP-16 (DBQ) - same |
| DC Ground Shift Tolerance | ±40 V | ±40 V | ±40 V | ±40 V | ±40 V |
| Direction Configuration | 2/2 (fixed) | 2/2 (fixed) | 1/3 (fixed) | 1/1 (fixed) | 2/2 (fixed) |
| Maximum Data Rate | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps | 100 Mbps |
| Propagation Delay (max) | 8.5 ns | 8.5 ns | 8.5 ns | 8.5 ns | 8.5 ns |
| Channel-to-Channel Skew (max) | 2 ns | 2 ns | 2 ns | 2 ns | 2 ns |
| CMTI | 1 kV/μs | 1 kV/μs | 1 kV/μs | 1 kV/μs | 1 kV/μs |
| Supply Voltage Range | 1.71 V to 5.5 V | 1.71 V to 5.5 V | 1.71 V to 5.5 V | 1.71 V to 5.5 V | 1.71 V to 5.5 V |
| Operating Temperature | -40 °C to +125 °C (AEC-Q100 Grade 1) | 0 °C to +70 °C (commercial) | -40 °C to +125 °C (AEC-Q100 Grade 1) | -40 °C to +125 °C (AEC-Q100 Grade 1) | -40 °C to +125 °C (AEC-Q100 Grade 1) |
| Automotive Qualification | AEC-Q100 | No (commercial) | AEC-Q100 | AEC-Q100 | AEC-Q100 |
Principais diferenciais
- AEC-Q100 automotive-grade qualification with full PPAP support (vs TXG4042 (commercial))
- 2/2 fixed-direction topology matches the most common bidirectional GPIO patterns (vs TXG4040-Q1 (1/3 direction))
- 130 VPP AC noise rejection at 1 MHz exceeds competing ground-level translators (vs TXG4041-Q1 (lower-noise-budget 1/1 variant))
Notas de projeto
Place a 0.1 μF low-ESR ceramic bypass capacitor within 2 mm of the VCC pin (pin 1) to keep the internal regulator stable across the 1.71 V to 5.5 V supply range. The TXG4042-Q1 does not require any other external capacitors, inductors, or programming resistors, but ensure the HV_REF pin is properly referenced to the high-voltage ground, which may be offset by up to ±40 V relative to GND. For multi-channel synchronous applications, route VCC traces symmetrically to minimize channel-to-channel supply-induced timing variation.
Estimated: PCB trace length mismatch between channels directly adds to channel-to-channel skew beyond the 2 ns datasheet rating. Keep the four data traces within 50 mil (1.27 mm) of each other in length and route them on a single layer without vias to maintain timing alignment. Route the HV_GND and HV_REF traces symmetrically with respect to the data lines to preserve common-mode rejection at 130 VPP at 1 MHz. A solid ground pour on the layer directly beneath the high-side traces reduces EMI coupling to adjacent motor-drive power stages.
Do not assume the TXG4042-Q1 provides galvanic isolation - it does not. Both HV_GND and GND are referenced through the device, so a fault on the high-voltage side can propagate to the low-voltage side. For applications requiring reinforced isolation per IEC 61508 or UL 1577, use a true digital isolator such as ISO1042 or ISO6721 instead. Also avoid routing the high-side traces near fast-switching power nodes; even with 1 kV/μs CMTI, capacitive coupling can corrupt data at 100 Mbps. Finally, do not exceed the absolute maximum DC ground shift of ±40 V - leave at least 5 V design margin for transient peaks during load-dump events.
At 100 Mbps, the TXG4042-Q1 push-pull outputs should be terminated with a series resistor at the receiver if the trace length exceeds approximately 25 mm or if the load capacitance exceeds 10 pF. A 33 Ω to 47 Ω series resistor placed near the TXG4042-Q1 output pin damps reflections and reduces ringing. For long high-side traces in noisy motor environments, consider a small RC filter (22 Ω + 22 pF) to improve EMI without sacrificing the 8.5 ns propagation delay budget significantly.
Informações de conformidade
AEC-Q100 Grade 1 qualified per TI datasheet. RoHS and REACH compliant. Halogen-free per TI product page. Conflict-minerals declaration available from TI.
