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SN74LVC2G34DCKR

Dual buffer gate, 1.65-5.5V, +/-24mA drive, 5.5V-tolerant input, SC70-6, level shift

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Pieza del fabricante：

SN74LVC2G34DCKR

Paquete：

SC70-6 / SOT-363 (2.0 x 1.25 x 0.9 mm)

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Descripción

Productos

The SN74LVC2G34DCKR from Texas Instruments is a dual buffer gate designed for 1.65V to 5.5V VCC operation in a 6-pin SC70 (DCK) package. Performing the Boolean function Y = A in positive logic, it supports 5.5V-tolerant inputs for voltage translation, provides +/-24 mA output drive at 3.3V, and features Ioff circuitry for partial-power-down protection.

Especificaciones

Función Dual Buffer (non-inverting)
Tensión de alimentación 1.65V to 5.5V
Input Voltage Tolerance Up to 5.5V
Output Drive +/-24 mA @ 3.3V
Retardo de propagación 4.1 ns max @ 3.3V
Corriente de reposo 10 uA max
Ioff Support Yes (partial-power-down)
ESD Protection 2000V HBM, 1000V CDM
Temperatura de funcionamiento -40°C to +125°C
Paquete SC70-6 (DCK) (2.0 x 1.25 x 0.9 mm)

Características

  • NanoFree package technology for minimal footprint
  • 5.5V-tolerant inputs enable down-translation
  • Low power consumption: 10 uA max ICC
  • +/-24 mA output drive at 3.3V
  • Ioff supports live insertion and back-drive protection
  • Latch-up exceeds 100 mA per JESD78 Class II

Aplicaciones

  • Level translation between voltage domains
  • Signal buffering and fanout enhancement
  • AV receivers and home theater systems
  • Portable audio and MP3 players
  • Solid-state drives and embedded PCs

The Texas Instruments SN74LVC2G34DCKR is a dual non-inverting buffer gate from the 74LVC family, designed for 1.65V to 5.5V VCC operation in a miniature 6-pin SC70 (DCK) package using NanoFree packaging technology. It performs the Boolean function Y = A, providing signal buffering with 5.5V-tolerant inputs that accept voltages higher than the supply rail, enabling down-translation from 5V or 3.3V logic to lower voltage domains. The device delivers +/-24 mA output drive at 3.3V with a maximum propagation delay of 4.1 ns. The Ioff feature allows the inputs and outputs to be valid when VCC is 0V, supporting live insertion, partial-power-down mode, and back-drive protection in mixed-voltage systems.

The SN74LVC2G34DCKR consists of two independent non-inverting buffer channels. Each channel accepts an input signal (A) and produces an output (Y) that replicates the input logic level. The output stage uses CMOS push-pull transistors capable of sourcing or sinking 24 mA at 3.3V, providing sufficient drive for multiple downstream loads or transmission lines. The input stage is designed to tolerate voltages up to 5.5V regardless of VCC, allowing the device to translate a higher-voltage input signal down to the VCC level at the output. The Ioff circuit disconnects the output stage when VCC is 0V, preventing parasitic current flow from the input through internal ESD diodes to the unpowered supply rail. This enables safe use in hot-swap and partial-power-down systems where some signals may be active while the buffer supply is off.

Pin Nombre Descripción
1 1A Channel 1 Input
2 GND Suelo
3 2A Channel 2 Input
4 2Y Channel 2 Output
5 VCC Supply Voltage (1.65-5.5V)
6 1Y Channel 1 Output
  • Level Translation: Down-translating 5V logic signals to 3.3V or 1.8V domains using 5.5V-tolerant inputs without external level shifter ICs
  • Signal Buffering: Increasing fanout capability of microcontroller GPIO pins by isolating the source from capacitive load effects
  • Hot-Swap Systems: Ioff protection allows safe signal routing in blade servers and modular systems where cards may be inserted with power off
  • Audio/Video Equipment: Signal integrity buffering in AV receivers and Blu-ray players with 125°C operating range
  • SSD Controllers: Fast 4.1 ns propagation for NAND Flash interface signal conditioning in enterprise and client SSDs
Modelo Marca Canales VCC (V) Paquete
SN74LVC2G34DBVR TI 2 1.65-5.5 SOT-23-6
SN74LVC1G34DCKR TI 1 1.65-5.5 SC70-5
NC7WZ16P6X onsemi 2 1.65-5.5 SC70-6
74LVC2G34GW NXP 2 1.65-5.5 TSSOP-6
SN74LVC2G125DCKR TI 2 (3-state) 1.65-5.5 SC70-6
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