Dual-Bit, 2-DIR pin Dual-Supply Bus Transceiver w/ Configurable Voltage Translation, 3-State Output - SN74AVC2T245

SN74AVC2T245 (ACTIVE)

Dual-Bit, 2-DIR pin Dual-Supply Bus Transceiver w/ Configurable Voltage Translation, 3-State Output

 

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 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.2 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V voltage nodes.

The SN74AVC2T245 is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) activate either the B-port outputs or the A-port outputs or place both output ports into the high-impedance mode . 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 SN74AVC2T245 control pins (DIR1, DIR2, and OE) are 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.

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

Features

  • Each Channel Has Independent Direction Control
  • Control Inputs VIH/VIL Levels Are Referenced to
    VCCA Voltage
  • Fully Configurable Dual-Rail Design Allows Each
    Port to Operate Over the Full 1.2 V to
    3.6 V Power-Supply Range
  • I/Os Are 4.6 V Tolerant
  • Ioff Supports Partial-Power-Down Mode Operation
  • VCC Isolation Feature - If Either VCC Input is at
    GND, Both Ports are in High-Impedance State
  • Typical Data Rates
    • 500 Mbps (1.8 V to 3.3 V Level-Shifting)
    • 320 Mbps (<1.8 V to 3.3 V Level-Shifting)
    • 320 Mbps (Translate to 2.5 V or 1.8 V)
    • 280 Mbps (Translate to 1.5 V)
    • 240 Mbps (Translate to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 5000 V Human-Body Model (A114-A)
    • 200 V Machine Model (A115-A)
    • 1500 V Charged-Device Model (C101)

View more

Featured tools and software

Parametrics Compare all products in Little Logic

 
Technology Family
Sub-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)
Output Drive (IOL/IOH) (Max) (mA)
Input Type
Output Type
Logic
3-State Output
Schmitt Trigger
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
SN74AVC2T245 SN74AVC2T244 SN74AVC2T45 SN74AVC2T45-Q1 SN74AVCH2T45 SN74LVC2T45 SN74LVC2T45-Q1 TXB0102 TXS0102 TXS0102-Q1
AVC    AVC    AVC    AVC    AVC    LVC    LVC         
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   
1.2    0.9    1.2    1.2    1.2    1.65    1.65    1.2    1.65    1.65   
3.6    3.6    3.6    3.6    3.6    5.5    5.5    5.5    5.5    5.5   
2    2    2    2    2    2    2    2    2    2   
1.2
1.5
1.8
2.5
3.3   
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   
1.8
2.5
3.3
5   
1.8
2.5
3.3
5   
3.3    3.3    3.3   
100    100    100    100    100    150    150         
0.0008    0.0009    0.0008    0.01    0.01    0.004    0.004    0.005    0.012    0.012   
2.5
2.1
1.9   
20
7
3.5   
3.1
2.6
2.4
2.2   
3.1
2.6
2.4
2.2   
3.1
2.6
2.4
2.2   
17.7
10.3
8.3
7.2   
19.5
12
9.6
8.4   
4.9    4.2    4.2   
12/-12    24/-24    12/-12    12/-12    12/-12    32/-32    32/-32         
CMOS    CMOS    CMOS    CMOS    CMOS    CMOS/TTL    CMOS/TTL    CMOS/TTL    TTL    TTL   
CMOS    CMOS    CMOS    CMOS    CMOS    CMOS    CMOS    CMOS    CMOS    CMOS   
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    Automotive    Catalog    Catalog    Automotive    Catalog    Catalog    Automotive   
  -40 to 85    -40 to 85    -40 to 125    -40 to 85    -40 to 85    -40 to 125    -40 to 85    -40 to 85    -40 to 125   
10UQFN    8X2SON    8DSBGA
8SM8
8VSSOP   
8VSSOP    8DSBGA
8SM8
8VSSOP   
8DSBGA
8SM8
8VSSOP   
8VSSOP    8DSBGA
8VSSOP   
8DSBGA
8SM8
8VSSOP
8X2SON   
8VSSOP   
0.23 | 1ku    0.42 | 1ku    0.23 | 1ku    0.25 | 1ku    0.40 | 1ku    0.21 | 1ku    0.25 | 1ku    0.29 | 1ku    0.23 | 1ku    0.27 | 1ku