Features and Benefits

  • Logic Level Translators Simplify Design by Enabling Data Transfer Between Lower and Higher Voltage Systems
  • Operation Down to +1.2V on VL
  • Guaranteed Data Rate Options
    • 230kbps
    • 8Mbps (+1.2V ≤ VL ≤ VCC ≤ +5.5V)
    • 10Mbps (+1.2V ≤ VL ≤ VCC ≤ +3.3V)
    • 16Mbps (+1.8V ≤ VL ≤ VCC ≤ +2.5V and +2.5V ≤ VL ≤ VCC ≤ +3.3V)
  • Bidirectional Level Translation (MAX3372E/MAX3373E and MAX3377E/MAX3378E)
  • Low Power Consumption Reduces Thermal Dissipation
  • Quiescent Current (130µA typ)
  • 1µA Supply Current in Three-State Output Mode
  • Slew Rate Limiting Lowers EMI
  • Protection Features Increase System Reliability
  • ±15kV ESD Protection on I/O VCC Lines
  • Thermal Short-Circuit Protection

Product Details

The MAX3372E–MAX3379E and MAX3390E–MAX3393E ±15kV ESD-protected level translators provide the level shifting necessary to allow data transfer in a multivoltage system. Externally applied voltages, VCC and VL, set the logic levels on either side of the device. A low-voltage logic signal present on the VL side of the device appears as a high-voltage logic signal on the VCC side of the device, and vice-versa. The MAX3374E/MAX3375E/MAX3376E/MAX3379E and MAX3390E–MAX3393E unidirectional level translators level shift data in one direction (VL → VCC or VCC → VL) on any single data line. The MAX3372E/MAX3373E and MAX3377E/MAX3378E bidirectional level translators utilize a transmission-gate-based design (Figure 2 in the full data sheet) to allow data translation in either direction (VL ⇔ VCC) on any single data line. The MAX3372E–MAX3379E and MAX3390E–MAX3393E accept VL from +1.2V to +5.5V and VCC from +1.65V to +5.5V, making them ideal for data transfer between low-voltage ASICs/PLDs and higher voltage systems.

All devices in the MAX3372E–MAX3379E, MAX3390E–MAX3393E family feature a three-state output mode that reduces supply current to less than 1µA, thermal shortcircuit protection, and ±15kV ESD protection on the VCC side for greater protection in applications that route signals externally. The MAX3372E/MAX3377E operate at a guaranteed data rate of 230kbps. Slew-rate limiting reduces EMI emissions in all 230kbps devices. The MAX3373E–MAX3376E/MAX3378E/MAX3379E and MAX3390E–MAX3393E operate at a guaranteed data rate of 8Mbps over the entire specified operating voltage range. Within specific voltage domains, higher data rates are possible. (See the Timing Characteristics table in the full data sheet.)

The MAX3372E–MAX3376E are dual level shifters available in 3 x 3 UCSP, 8-pin TDFN, and 8-pin SOT23 packages. The MAX3377E/MAX3378E/MAX3379E and MAX3390E–MAX3393E are quad level shifters available in 3 x 4 UCSP, 14-pin TDFN, and 14-pin TSSOP packages.


  • Cell Phones
  • Cell-Phone Cradles
  • GPS
  • Low-Cost Serial Interfaces
  • Low-Voltage ASIC Level Translation
  • Portable Communication Devices
  • Portable POS Systems
  • Smart Card Readers
  • SPI, MICROWIRE, and I²C Level Translation
  • Telecommunications Equipment

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

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MAX3378E Companion Parts

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