SN74LVC2T45 (ACTIVE)

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

 

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)

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Little Logic

 
Technology Family
Sub-Family
Gate Type
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)
Output Drive (IOL/IOH) (Max) (mA)
Logic
3-State Output
Schmitt Trigger
Rating
Operating Temperature Range (C)
Pin/Package
Features
SN74LVC2T45 SN74AVC2T244 SN74AVC2T245 SN74AVC2T45 SN74AVC2T45-Q1 SN74AVCH2T45 SN74LVC2T45-Q1 TXB0102 TXS0102 TXS0102-Q1
LVC    AVC    AVC    AVC    AVC    AVC    LVC    TXB    TXS    TXS   
Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator   
TRANSCEIVER    BUFFER    TRANSCEIVER    TRANSCEIVER    TRANSCEIVER    TRANSCEIVER    TRANSCEIVER    N/A    N/A    N/A   
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   
2    2    2    2    2    2    2    2    2    2   
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   
17.7
10.3
8.3
7.2   
20
7
3.5   
2.5
2.1
1.9   
3.1
2.6
2.4
2.2   
3.1
2.6
2.4
2.2   
3.1
2.6
2.4
2.2   
19.5
12
9.6
8.4   
4.9    4.2    4.2   
32/-32    24/-24    12/-12    12/-12    12/-12    12/-12    32/-32    0.02/-0.02    1/-.02    1/-.02   
True    True    True    True    True    True    True    True    True    True   
Yes    No    Yes    Yes    Yes    Yes    Yes    No    No    No   
No    No    No    No    No    No    No    No    No    No   
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   
Ioff
Dual Supply
Translation   
IOFF
Dual Supply
Translation   
IOFF
Dual Supply
Translation   
IOFF
Dual Supply
Translation   
IOFF
Dual Supply
Translation   
IOFF
Dual Supply
Translation   
Ioff
Dual Supply
Translation   
One-Shot Edge Accelerators
Bidirectional   
One-Shot Edge Accelerators
Bidirectional   
One-Shot Edge Accelerators
Bidirectional   

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