SN74LVC2T45 2-Bit Dual Supply Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs | TI.com

SN74LVC2T45 (ACTIVE)

2-Bit Dual Supply Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs

2-Bit Dual Supply Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs - SN74LVC2T45
 

Description

This dual-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65 V to 5.5 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65 V to 5.5 V. This allows for universal low-voltage bidirectional translation between any of the 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.

The SN74LVC2T45 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input activate either the B-port outputs or the A-port outputs. The device transmits data from the A bus to the B bus when the B-port outputs are activated, and from the B bus to the A bus when the A-port outputs are activated. The input circuitry on both A and B ports always is active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.

The SN74LVC2T45 is designed so that the DIR input circuit is supplied by VCCA. 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.

The VCC isolation feature ensures that if either VCC input is at GND, both ports are in the high-impedance state. NanoFree™ package technology is a major breakthrough in IC packaging concepts, using the die as the package.

Features

  • Fully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.65-V to 5.5-V Power-Supply Range
  • VCC Isolation Feature – If Either VCC Input Is at GND, Both Ports Are in the High-Impedance State
  • DIR Input Circuit Referenced to VCCA
  • Low Power Consumption, 4-µA Max ICC
  • Available in the Texas Instruments NanoFree™ Package
  • ±24-mA Output Drive at 3.3 V
  • Ioff Supports Partial-Power-Down Mode Operation
  • Max Data Rates
    • 420 Mbps (3.3-V to 5-V Translation)
    • 210 Mbps (Translate to 3.3 V)
    • 140 Mbps (Translate to 2.5 V)
    • 75 Mbps (Translate to 1.8 V)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 4000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

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Parametrics Compare all products in Direction Controlled Voltage Translation

 
Technology Family
Bits (#)
VCC (Min) (V)
VCC (Max) (V)
Voltage (Nom) (V)
F @ Nom Voltage (Max) (Mhz)
ICC @ Nom Voltage (Max) (mA)
Rating
Operating Temperature Range (C)
Pin/Package
SN74LVC2T45 SN74AVC2T244 SN74AVC2T245 SN74AVC2T45 SN74AVC2T45-Q1 SN74AVCH2T45 SN74LVC2T45-Q1 TXB0102 TXS0102 TXS0102-Q1
LVC     AVC     AVC     AVC     AVC     AVC     LVC     TXB     TXS     TXS    
2     2     2     2     2     2     2     2     2     2    
1.65     0.9     1.2     1.2     1.2     1.2     1.65     1.2     1.65     1.65    
5.5     3.6     3.6     3.6     3.6     3.6     5.5     5.5     5.5     5.5    
1.8
2.5
3.3
5    
0.9
1.2
1.5
1.8
2.5
3.3    
1.2
1.5
1.8
2.5
3.3    
1.2
1.5
1.8
2.5
3.3    
1.2
1.5
1.8
2.5
3.3    
1.2
1.5
1.8
2.5
3.3    
1.8
2.5
3.3
5    
3.3     3.3     3.3    
150     100     100     100     100     100     150     50     12     12    
0.004     0.0009     0.0008     0.0008     0.01     0.01     0.004     0.005     0.012     0.012    
Catalog     Catalog     Catalog     Catalog     Automotive     Catalog     Automotive     Catalog     Catalog     Automotive    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 125     -40 to 85     -40 to 125     -40 to 85     -40 to 85     -40 to 125    
8DSBGA
8SM8
8VSSOP    
8X2SON
8X2SON    
10UQFN     8DSBGA
8SM8
8VSSOP    
8VSSOP     8DSBGA
8SM8
8VSSOP    
8VSSOP     8DSBGA
8VSSOP    
8DSBGA
8SM8
8VSSOP
8X2SON
8X2SON    
8VSSOP    

Other qualified versions of SN74LVC2T45

Version Part Number Definition
Enhanced Product SN74LVC2T45-EP Supports Defense, Aerospace and Medical Applications
Automotive SN74LVC2T45-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects