NVT2002DP,118 - 2-Bit Bidirectional Level Translator 1.0-5V | NXP
MPN: NVT2002DP,118 ✓ فعالNVT2002DP,118 جائزہ
A voltage level translator (also called a level shifter or voltage translator) is a mixed-signal interface IC that safely connects digital devices operating at different supply voltages, such as a 1.8 V microcontroller and a 5 V sensor. Level translators sit within the broader hierarchy of logic ICs and interface ICs in the signal chain, forming a bridge between voltage domains in power management and system I/O design. Without translation, direct connection risks over-voltage damage or failure to meet logic thresholds.
Key features of the NVT2002 include direction-pin-free operation, which simplifies control firmware and eliminates bus contention logic; support for both open-drain and push-pull applications; identical electrical characteristics across both channels with minimal output-to-output deviation; and low effective line capacitance for signal speeds below 33 MHz in open-drain mode. The architecture uses reference voltages Vref(A) and Vref(B) with an enable (EN) input that, when LOW, places all I/O in the high-impedance state, significantly reducing supply current.
Technically, the NVT2002 employs a pass-gate architecture: a one-shot edge accelerator briefly lowers the output impedance on rising edges to overcome the RC time constant of the pull-up resistors, while a bias network between Vref(B) and Vref(A) holds the bus near the A-side threshold. This hybrid approach combines the bidirectionality of open-drain schemes with the low capacitance and speed of transistor-switch designs, avoiding the propagation-delay penalty of dual-supply CMOS translators.
Typical applications include I2C, SMBus, and PMBus level shifting between 3.3 V controllers and 5 V peripherals, GPIO and UART interface translation in mixed-voltage embedded systems, and low-speed bus bridging in industrial and automotive body-electronics modules where microcontrollers such as NXP and ST MCUs interface to 5 V sensors and actuators.
One key design consideration: because the translator is open-drain at its core, push-pull operation requires proper pull-up resistor sizing - lower values improve edge rates but increase static current through the internal bias network, so engineers must trade speed against power consumption.
This page synthesizes distributor pricing, drop-in alternatives, practical design notes, and an application-by-application selection guide not found in the manufacturer datasheet, verified as of 2026-10-19.
کے لیے ڈراپ اِن متبادل NVT2002DP,118 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں NVT2002DP,118 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package.
PCA9306DP,118
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
GTL2002DP,118
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
NVT2002GM,125
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہ📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
NVT2002DP,118 تفصیلات
| Translator Type | Bidirectional voltage level translator |
| Circuit | 1 circuit, 2 channels |
| A-Side Voltage Range (Vref(A)) | 1.0 V to 3.6 V |
| B-Side Voltage Range (Vref(B)) | 1.8 V to 5.5 V |
| Translation Range | 1.0 V to 5 V |
| Direction Control | No direction pin required |
| Application Mode | Open-drain and push-pull |
| Max Open-Drain Data Rate | < 33 MHz |
| Enable Input | EN, active HIGH (LOW = high-impedance I/O) |
| Channel-to-Channel Matching | All channels same electrical characteristics, minimal deviation |
| پیکیج | TSSOP-8 (DP) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Reel Ordering Code Suffix | ,118 (standard packing) |
NVT2002DP,118 پن کنفیگریشن
| پن 1 | Vref(A) — A-side reference voltage, 1.0 V to 3.6 V |
| پن 2 | A1 — A-side data I/O, channel 1 |
| پن 3 | A2 — A-side data I/O, channel 2 |
| پن 4 | GND — Ground (0 V) |
| پن 5 | B2 — B-side data I/O, channel 2 |
| پن 6 | B1 — B-side data I/O, channel 1 |
| پن 7 | EN — Enable input; HIGH = translation active, LOW = all I/O high-impedance |
| پن 8 | Vref(B) — B-side reference voltage, 1.8 V to 5.5 V |
عام استعمالات
NVT2002DP,118 کے لیے موزوں ہے 6 ایپلیکیشنs: I2C Bus Level Shifting, Mixed-Voltage GPIO Interfacing, SMBus and PMBus Power-System Management, Automotive Body Electronics and Gateways, UART and Low-Speed Serial Link Translation, 1-Wire and Single-Channel Open-Drain Buses.
I2C Bus Level Shifting
The NVT2002DP,118 is a natural fit for I2C level shifting because SDA and SCL are exactly two bidirectional open-drain lines - matching the part's 2-channel configuration precisely. With Vref(A) tied to a 1.8 V or 3.3 V controller rail and Vref(B) tied to a 5 V peripheral rail, the translator passes both logic levels without a direction pin, preserving clock stretching and multi-master arbitration. Its open-drain core means no bus contention logic or firmware handshake is needed. The internal one-shot edge accelerator restores sharp rising edges against pull-up RC loads, supporting standard 100 kHz and fast-mode 400 kHz I2C with wide margin against the sub-33 MHz open-drain limit. Tie EN HIGH during operation; pulling it LOW tri-states all I/O for hot-plug or power-down scenarios.
تجویز کردہ
Mixed-Voltage GPIO Interfacing
When a low-voltage microcontroller must drive or sense 5 V industrial sensors, optocoupler inputs, or legacy logic, the NVT2002DP,118 bridges the domains safely: the A side tolerates 1.0 V to 3.6 V references while the B side operates at 1.8 V to 5.5 V. Each channel passes signals in both directions with identical electrical characteristics, so a single TSSOP-8 device replaces discrete two-transistor shift circuits and their matching resistors, cutting board area and BOM variance. Push-pull GPIO translation requires pull-up resistors on each line, so engineers should size them against drive strength and edge-rate needs. The sub-33 MHz class bandwidth comfortably covers typical GPIO status, control, and interrupt lines running at kilohertz to low-megahertz rates in PLC I/O racks and instrumentation front ends.
تجویز کردہ
SMBus and PMBus Power-System Management
Server, telecom, and battery-management systems commonly run SMBus/PMBus management traffic at 3.3 V while power-supply modules, battery chargers, or hot-swap controllers expose 5 V management ports. The NVT2002DP,118 shifts this two-wire bus cleanly because SMBus, like I2C, is open-drain and bidirectional with clock stretching - the translator's direction-pin-free architecture handles it without host intervention. Both channels provide minimal output-to-output deviation, keeping SCL and SDA timing symmetric. The EN pin allows the management controller to isolate the bus when a PSU slot is unpowered, and low disabled-state supply current suits always-on standby rails. Verify resistor sizing against the SMBus 1 mA sink-current requirement, which constrains pull-up values on the 5 V side.
تجویز کردہ
Automotive Body Electronics and Gateways
Automotive body-control modules frequently mix a 3.3 V MCU domain with 5 V sensor and switch inputs, and the NVT2002 family is positioned for such translation duties in NXP's automotive ecosystem. The device bridges LIN transceiver digital enables, switch monitoring lines, and low-speed serial links between domains while eliminating latch-up risk from direct 5 V injection into 3.3 V pins. Its compact TSSOP-8 footprint suits dense gateway PCBs. For formal automotive qualification, engineers should confirm the exact temperature grade and AEC-Q100 status of the ordering code on NXP's product page, since qualification varies by grade suffix. The EN pin supports module sleep sequencing, tri-stating the bus so residual leakage through the translator does not discharge the battery during park-off states.
تجویز کردہ
UART and Low-Speed Serial Link Translation
UART TX/RX lines are point-to-point push-pull signals, and the NVT2002DP,118 can shift a 1.8 V or 3.3 V MCU UART to a 5 V device (legacy modems, GPS modules, industrial printers) using one channel per direction. Each side needs a pull-up resistor; because driven-LOW states sink current through the opposite side's pull-up, choose values that respect the driver sink capability. The architecture supports typical UART baud rates up to several megabaud comfortably within the part's bandwidth class, with the one-shot accelerator aiding rising edges. This application uses both channels for a full duplex link in one 8-pin package. For very high baud rates or long cables, evaluate a dedicated auto-direction push-pull translator instead, since RC-limited edges set the practical ceiling.
تجویز کردہ
1-Wire and Single-Channel Open-Drain Buses
Single-wire protocols such as 1-Wire, Touch Memory, and various propriety open-drain status buses benefit from the NVT2002's transparent bidirectional behavior: any device may drive the line at any time, and the translator passes contention-free. Using just one of its two channels, designers still gain the part's low line capacitance and edge acceleration, which matter on parasitically powered 1-Wire networks where the same line carries both power and data. The second channel can serve a companion interrupt line, keeping the design to one small package. Connect Vref(A) to the 1.8 V to 3.3 V host rail and Vref(B) to the 5 V field bus, pull both sides up per protocol requirements, and tie EN HIGH. Biased operation keeps the line near the A-side threshold for reliable detection.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا NVT2002DP,118 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PCA9306DP,118 | GTL2002DP,118 | NVT2002GM,125 |
|---|---|---|---|---|
| Package | TSSOP-8 (DP) | TSSOP-8 - same | TSSOP-8 - same | TSSOP-8 - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Channels | 2 bidirectional | 2 bidirectional | 2 bidirectional | 2 bidirectional |
| A-Side Voltage Range | 1.0 V to 3.6 V | 1.0 V to 3.6 V | 1.2 V to 3.6 V | 1.0 V to 3.6 V |
| B-Side Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.65 V to 5.5 V | 1.8 V to 5.5 V |
| Direction Pin Required | No | No | No | No |
| Family Generation | Current NVT generation | Established PCA9306 generation | Earlier GTL generation | Same NVT generation |
اہم امتیازی خصوصیات
- Wider A-side low-voltage support (بمقابلہGTL2002DP,118)
- Newer-generation silicon with matched channels (بمقابلہPCA9306DP,118)
- Direction-pin-free bidirectionality (بمقابلہDual-supply CMOS translators (TXS/TXB class))
- Trade-off: pull-up current in push-pull mode (بمقابلہPush-pull auto-direction translators)
ڈیزائن نوٹس
Pull-up resistor selection dominates both speed and static power. Each line's pull-up on the B side carries bias current through the internal Vref(B)-to-Vref(A) network, so overly strong pull-ups (e.g., 1 kilo-ohm) waste milliamperes continuously, while overly weak ones (e.g., 100 kilo-ohm) produce unacceptably slow rising edges at high bus capacitance. Start with 4.7 kilo-ohm per line on I2C-class buses and verify rise-time against 0.8473*RC (30% to 70% threshold criterion) with your measured bus capacitance. Estimated: at 5 V and 4.7 kilo-ohm with both lines LOW half the time, static draw is roughly 1 mA total.
Place the NVT2002 close to the voltage-domain boundary and keep A-side traces short, since the A rail is often a sensitive low-voltage plane shared with an MCU. Decouple both Vref(A) and Vref(B) with 100 nF ceramic capacitors placed within a few millimeters of pins 1 and 8. Tie EN either hard to Vref(B) for always-on translation, or drive it from a GPIO/GPIO-with-pull-down so the bus defaults to tri-state during MCU reset and power sequencing - this prevents partial-voltage back-powering of the low-voltage domain through the translator.
Common mistake: assuming push-pull mode works without pull-ups. The NVT2002 is a pull-up-based architecture even in push-pull applications - omitting resistors leaves rising edges unpowered. Second pitfall: applying a reference outside the specified window, e.g., 5 V on Vref(A); the A side is limited to 3.6 V max and exceeding it risks damage. Third: connecting Vref(B) below 1.8 V stops reliable translation. Also confirm hot-plug behavior: devices on an unpowered domain will back-drive through their pull-ups - the EN pin is your isolation mechanism.
The internal one-shot edge accelerator only boosts the first rising edge after a falling edge; at very light loads this is invisible, but at heavy bus capacitance (>100 pF) verify no double-clocking occurs on I2C due to overshoot on the accelerated edge. Scope both sides during bring-up. For mixed 1.8 V/5 V systems, check the A-side input low threshold margin: the biased line sits near Vref(A) plus a threshold, so 1.0 V A-side operation is the most marginal corner in the specification.
تعمیل کی معلومات
Compliance data was not present in the provided web search results. NXP ordering-code suffix ,118 typically denotes standard packing; verify RoHS/REACH status on the official NXP product page (nxp.com/part/NVT2002DP) before design-in.
