Single-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs - SN74LVC1T45

SN74LVC1T45 (ACTIVE)

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

 

Description

This single-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 SN74LVC1T45 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 is always active on both A and B ports and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.

The SN74LVC1T45 is designed so that the DIR input is powered 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 is designed so that if either VCC input is at GND, then 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

  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • Available in the Texas Instruments NanoFree™ Package
  • 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 VCCInput Is at GND, Both Ports Are in the High-Impedance State
  • DIR Input Circuit Referenced to VCCA
  • Low Power Consumption, 4-µA Max ICC
  • ±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

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Other qualified versions of SN74LVC1T45

Version Part Number Definition
Enhanced Product SN74LVC1T45-EP Supports Defense, Aerospace and Medical Applications
Automotive SN74LVC1T45-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

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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
Special Features
SN74LVC1T45 SN74AVC1T45 SN74AVCH1T45 SN74LVC1T45-Q1 TXB0101 TXS0101
LVC    AVC    AVC    LVC    TXB    TXS   
Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator    Dual Supply Translator   
TRANSCEIVER    TRANSCEIVER    TRANSCEIVER    TRANSCEIVER    N/A    N/A   
1.65    1.2    1.2    1.65    1.2    1.65   
5.5    3.6    3.6    5.5    5.5    5.5   
1    1    1    1    1    1   
1.8
2.5
3.3
5   
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   
150    100    100    150    50    12   
0.004    0.0009    0.01    0.004    0.003    0.012   
15.5
8
5.8
4.4   
2.9
5.6
5.2
4.2
3.8   
3.3
2.7
2.4
2.3   
18.5
11
8.8
7.4   
4.9    4.2   
32/-32    4/-4    12/-12    32/-32    0.02/-0.02    1/-.02   
True    True    True    True    True    True   
Yes    Yes    Yes    Yes    No    No   
No    No    No    No    No    No   
Catalog    Catalog    Catalog    Automotive    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 125    -40 to 85    -40 to 85
-55 to 125   
6DSBGA
6SC70
6SOT-23
6SOT-5X3
6USON   
6DSBGA
6SOT-5X3
6SOT-23
6SC70   
6DSBGA
6SC70
6SOT-23   
6SC70    6DSBGA
6SC70
6SOT-23
6SOT-5X3   
6SC70
6DSBGA
6SOT-23
6SOT-5X3   
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