74LV1T34GV-Q100H - 1.65-5.5V Level Translating Buffer SC-74A | Nexperia
料号： 74LV1T34GV-Q100H ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.36 | $0.36 |
| 10 | $0.32 | $3.20 |
| 100 | $0.26 | $26.00 |
| 500 | $0.21 | $105.00 |
| 1,000 | $0.18 | $180.00 |
| 3,000 | $0.15 | $450.00 |
74LV1T34GV-Q100H 概述
A level-translating buffer is a logic buffer that accepts input voltages from a wide range of logic families and re-references its output to the local supply. This category sits inside the broader class of voltage level shifters, which in turn belong to logic ICs and interface ICs used in mixed-voltage digital systems. By collapsing 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V interfaces onto a single part, these devices reduce BOM count in multi-rail SoC designs.
Key features include CMOS low-power operation, push-pull drive, ±8 mA output drive capability, and a wide VCC operating range of 1.6 V to 5.5 V. Inputs accept logic levels above VCC up to 5.5 V regardless of the supply, and the device is qualified to AEC-Q100 Grade 1 for automotive applications, supporting operation from -40 C to +125 C.
Internally, the 74LV1T34GV-Q100H uses a single NMOS/PMOS stage with low-threshold input transistors that recognise a logic HIGH far below the supply rail. The output stage is a symmetric push-pull CMOS driver that swings rail-to-rail, giving balanced edge rates for both rising and falling transitions and avoiding the DC current path that open-drain translators require.
Typical applications include GPIO voltage translation between a 1.8 V application processor and 3.3 V peripherals, I2C/SPI/UART level shifting between microcontrollers and 5 V sensors, signal conditioning for SD cards and SIM interfaces, automotive body controllers and infotainment links, and any point-to-point signal where board rework to a multi-channel translator would be unnecessary.
When designing with this part, confirm that the input HIGH threshold stays below the driver's VOH at the chosen VCC and keep the trace under a few centimetres because this single-channel buffer does not include series damping. Add a 100 nF decoupling cap next to VCC and avoid pulling the input above 5.5 V even though it is 5 V-tolerant.
This page synthesises distributor stock, drop-in same-package alternatives, and practical design notes not found in the Nexperia datasheet, providing a single-engineer reference for level-shifting buffer selection.
直接替换替代料： 74LV1T34GV-Q100H ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
74LV1T34GV-Q100
✅ 直接替换📋 参考替代料（不在目录中）
74LV1T34GW-Q100H
✅ 直接替换📋 参考替代料（不在目录中）
SN74LV1T34DCKR
✅ 直接替换📋 参考替代料（不在目录中）
74LV1T34GV
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SN74LV1T34QDCKRQ1
✅ 直接替换📋 参考替代料（不在目录中）
74LV1T34GV-Q100H 最大额定值与电气特性
| 功能 | Single non-inverting level-translating buffer |
| Logic Family | 74LV (Low-Voltage CMOS with TTL-threshold translation) |
| Number of Elements | 1 |
| Bits per Element | 1 |
| 输出类型 | Push-Pull (CMOS) |
| Direction | Unidirectional, input-to-output |
| VCC Operating Range | 1.6 V to 5.5 V |
| Input Voltage Tolerance | Up to 5.5 V (5 V-tolerant input) |
| Input Logic Levels | 1.8 V CMOS at VCC = 3.3 V (low-threshold) |
| Output Drive Current | ±8 mA |
| 工作温度 | -40 C to +125 C (AEC-Q100 Grade 1) |
| 封装 | SC-74A (SOT-753), 5-pin |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 (Unlimited) |
| AEC-Q100 Qualification | Grade 1 |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
74LV1T34GV-Q100H 引脚配置
| 引脚 1 | NC — Not connected (per datasheet) |
| 引脚 2 | A (Input) — Logic input, 5 V-tolerant |
| 引脚 3 | GND — Ground reference |
| 引脚 4 | Y (Output) — Logic output, push-pull CMOS |
| 引脚 5 | VCC — Supply voltage, 1.6 V to 5.5 V |
典型应用
74LV1T34GV-Q100H 适用于 6 应用s: GPIO Voltage Translation (1.8 V to 3.3 V), Automotive Body Controller Signal Buffers, SPI/UART Level Shifting for 5 V Sensors, SD Card / SIM Interface Translation, Industrial PLC Mixed-Voltage Signal Isolation, I2C-like Unidirectional Control Signals.
GPIO Voltage Translation (1.8 V to 3.3 V)
The 74LV1T34GV-Q100H bridges a 1.8 V application processor GPIO to a 3.3 V peripheral such as a Wi-Fi or Bluetooth module. With its low-threshold input recognising 1.8 V CMOS HIGH when powered from VCC = 3.3 V, the buffer delivers a rail-to-rail 3.3 V output without external pull-ups. This eliminates the level-mismatch faults common in mixed-voltage SoC designs and keeps BOM cost to a single 5-pin SOT-753 device per signal line, ideal for handheld and IoT products.
推荐
Automotive Body Controller Signal Buffers
In automotive body controllers the 74LV1T34GV-Q100H isolates a 3.3 V microcontroller from 5 V sensor or actuator loads. AEC-Q100 Grade 1 qualification guarantees operation from -40 C to +125 C in the engine bay or dashboard environment. With ±8 mA push-pull drive it can directly switch LED indicators or relay drivers, while the 5 V-tolerant input protects the MCU from automotive load-dump transients up to 5.5 V.
推荐
SPI/UART Level Shifting for 5 V Sensors
The 74LV1T34GV-Q100H shifts SPI or UART signals from a 3.3 V host MCU to legacy 5 V sensors, displays, or radio modules. Inputs tolerate 5.5 V regardless of VCC, so the device can down-translate from 5 V input to 3.3 V output by powering VCC at 3.3 V. The push-pull output avoids the pull-up resistors required by open-drain translators and provides symmetric edge rates for clean SPI clock integrity at speeds up to several MHz.
推荐
SD Card / SIM Interface Translation
In SD card or SIM card interfaces the 74LV1T34GV-Q100H provides single-channel voltage translation between a 1.8 V or 3.3 V host and a 3.3 V peripheral. Its single-gate form factor matches SD card signalling lines one-for-one, keeping board layout simple and minimising parasitic stubs. The 5 V-tolerant input protects the host from accidental insertion of legacy 5 V peripherals, and the rail-to-rail output maintains signal integrity for high-speed SD modes.
推荐
Industrial PLC Mixed-Voltage Signal Isolation
The 74LV1T34GV-Q100H translates logic levels in industrial PLCs and factory automation systems where 24 V field-side signals interface with 3.3 V or 5 V control logic. Its -40 C to +125 C operating range handles factory-floor temperature swings, and the wide VCC range accepts 1.8 V, 2.5 V, 3.3 V, or 5 V rails without a separate translator IC. The push-pull output drives opto-isolator LED inputs directly, simplifying interface design.
推荐
I2C-like Unidirectional Control Signals
For one-way control signals such as reset, chip-select, or interrupt lines, the 74LV1T34GV-Q100H provides level translation without the bidirectional complexity of true I2C translators. Although not suited for true bidirectional I2C buses, it works perfectly for unidirectional control signals where one side is always a driver. The single 5-pin SC-74A package simplifies layout versus multi-channel translator ICs.
推荐
推荐产品汇总
工程参考数据： 74LV1T34GV-Q100H ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 74LV1T34GV-Q100 | 74LV1T34GW-Q100H | SN74LV1T34DCKR | SN74LV1T34QDCKRQ1 |
|---|---|---|---|---|---|
| Brand | Nexperia | Nexperia | Nexperia | Texas Instruments | Texas Instruments |
| Package | SC-74A (SOT-753), 5-pin | SC-74A (SOT-753), 5-pin - same | SC-74A (SOT-753), 5-pin - same | SC-74A (SOT-753), 5-pin - same | SC-74A (SOT-753), 5-pin - same |
| VCC Range | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V | 1.6 V to 5.5 V |
| Input Tolerance | 5.5 V tolerant | 5.5 V tolerant | 5.5 V tolerant | 5.5 V tolerant | 5.5 V tolerant |
| Output Drive | ±8 mA | ±8 mA | ±8 mA | ±8 mA | ±8 mA |
| AEC-Q100 | Grade 1 (-40 to +125 C) | Not qualified | Grade 1 | Not qualified | Grade 1 |
| Output Type | Push-Pull CMOS | Push-Pull CMOS | Push-Pull CMOS | Push-Pull CMOS | Push-Pull CMOS |
| Function | Single non-inverting buffer | Single non-inverting buffer | Single non-inverting buffer | Single non-inverting buffer | Single non-inverting buffer |
关键差异点
- AEC-Q100 Grade 1 qualification with SC-74A package （对比 74LV1T34GW-Q100H)
- Wide 1.6 V to 5.5 V VCC range with 5 V-tolerant input （对比 SN74LV1T34DCKR)
- Compact SC-74A (SOT-753) package for space-constrained designs （对比 Multi-channel level translators)
设计说明
Place a 100 nF ceramic decoupling capacitor as close as possible to the VCC pin (pin 5) and the GND pin (pin 3) of the 74LV1T34GV-Q100H. The CMOS push-pull output stage draws transient current during switching transitions; a local decoupling cap prevents supply rail collapse that could couple into adjacent analog or RF circuits. For multi-channel designs with several LV1T34 buffers, use a 1 uF bulk cap shared across the group plus individual 100 nF decoupling per IC.
Route the input trace (pin 2) and output trace (pin 4) with controlled impedance and avoid running them parallel to noisy switching rails for more than a few millimetres. Keep the SC-74A footprint trace widths consistent to minimise reflections, and place a ground pour under and around the device to reduce EMI. The 5 V-tolerant input accepts signals above VCC but the input trace should not exceed 5.5 V under any transient condition to prevent device stress.
Do not use the 74LV1T34GV-Q100H for bidirectional I2C buses - it is unidirectional only and lacks the internal pull-ups and direction-sensing circuitry required for true I2C level translation. For I2C use a dedicated I2C translator such as NCA9306 or TXS0102. Also avoid exceeding the absolute maximum input voltage of 5.5 V even when powered down, as the input ESD structure can be damaged by transient overshoot above this limit.
When using the 74LV1T34GV-Q100H for high-speed SPI clocks (above 10 MHz), keep the output trace under 50 mm to avoid ringing and overshoot. Add a series damping resistor of 22-33 ohm near the output pin if the trace is longer than 25 mm or if the load capacitance exceeds 15 pF. The push-pull output has symmetric rise and fall times but the actual edge rate depends on load capacitance and VCC voltage.
合规信息
AEC-Q100 Grade 1 qualified per Nexperia datasheet. RoHS compliant, lead-free, halogen-free per the product datasheet and distributor listings.
