SN74LVT125 3.3-V ABT Quadruple Bus Buffers With 3-State Outputs |


3.3-V ABT Quadruple Bus Buffers With 3-State Outputs

3.3-V ABT Quadruple Bus Buffers With 3-State Outputs - SN74LVT125


This bus buffer is designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.

The SN74LVT125 features independent line drivers with 3-state outputs. Each output is in the high-impedance state when the associated output-enable (OE)\ input is high.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.


  • Supports Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
  • Supports Unregulated Battery Operation Down to 2.7 V
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA = 25°C
  • Ioff Supports Partial-Power-Down Mode Operation
  • Bus-Hold Data Inputs Eliminate the Need for External Pullup Resistors
  • Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)

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Parametrics Compare all products in Non-Inverting buffer/driver

Technology Family
VCC (Min) (V)
VCC (Max) (V)
Bits (#)
Voltage (Nom) (V)
F @ nom voltage (Max) (Mhz)
ICC @ nom voltage (Max) (mA)
tpd @ Nom Voltage (Max) (ns)
IOL (Max) (mA)
IOH (Max) (mA)
Schmitt Trigger
Operating temperature range (C)
SN74LVT125 SN74LVT125-EP SN74LVT125-Q1
LVT     LVT     LVT    
2.7     2.7     2.7    
3.6     3.6     3.6    
4     4     4    
3.3     3.3     3.3    
100     100     100    
0.007     0.007     0.007    
4     4.2     4.2    
64     32     32    
-32     -32     -32    
No     No     No    
Catalog     HiRel Enhanced Product     Automotive    
-40 to 85     -40 to 125     -40 to 125