4-Bit Dual-Supply Bus Transceiver with Configurable Voltage-Level Shifting and 3-State Outputs - SN74AVC4T245

SN74AVC4T245 (ACTIVE)

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

 

Description

This 4-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. The SN74AVC4T245 is optimized to operate with VCCA/VCCB set at 1.4 V to 3.6 V. It is operational with VCCA/VCCB as low as 1.2 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 SN74AVC4T245 device is designed for asynchronous communication between two data buses. The logic levels of the direction-control (DIR) input and the output-enable (OE) input 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 is always active and must have a logic HIGH or LOW level applied to prevent excess ICC and ICCZ.

The SN74AVC4T245 device is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) 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, then both ports are in the high-impedance state.

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.

Features

  • 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
  • Maximum Data Rates
    • 380 Mbps (1.8-V to 3.3-V Translation)
    • 200 Mbps (< 1.8-V to 3.3-V Translation)
    • 200 Mbps (Translate to 2.5 V or 1.8 V)
    • 150 Mbps (Translate to 1.5 V)
    • 100 Mbps (Translate to 1.2 V)
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 8000-V Human-Body Model (A114-A)
    • 150-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

View more

Other qualified versions of SN74AVC4T245

Version Part Number Definition
Automotive SN74AVC4T245-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

Featured tools and software

Parametrics Compare all products in Direction Controlled Voltage Translation

 
Technology Family
Bits (#)
VCC (Min) (V)
VCC (Max) (V)
Voltage (Nom) (V)
Static Current (mA)
F @ Nom Voltage (Max) (Mhz)
ICC @ Nom Voltage (Max) (mA)
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
SN74AVC4T245 SN74AVC4T234 SN74AVC4T245-Q1 SN74AVC4T774 SN74AVCH4T245 TXB0104 TXB0104-Q1 TXB0302 TXB0304 TXS0104E TXS0104E-Q1
AVC    AVC    AVC    AVC    AVC               
4    4    4    4    4    4    4    2    4    4    4   
1.2    0.9    1.2    1.2    1.2      1.2          1.65   
3.6    3.6    3.6    3.6    3.6      5.5          5.5   
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   
  3.3          3.3   
0.008    0.005          0.01    0.04    0.01    0.01    0.0144     
100    100    100    100    100      100          24   
0.016    0.016    0.016    0.016    0.016      0.040          0.025   
Catalog    Catalog    Automotive    Catalog    Catalog    Catalog    Automotive    Catalog    Catalog    Catalog    Automotive   
-40 to 85    -40 to 85    -40 to 125    -40 to 85    -40 to 85    -40 to 85    -40 to 125    -40 to 85    -40 to 85    -40 to 85    -40 to 125   
16SOIC
16SSOP
16TSSOP
16VQFN
16TVSOP
16UQFN   
11uCSP    16VQFN    16TSSOP
16VQFN
16UQFN   
16SOIC
16TSSOP
16TVSOP
16UQFN
16VQFN   
12BGA MICROSTAR JUNIOR
12DSBGA
12UQFN
14SOIC
14TSSOP
14VQFN   
12UQFN
14TSSOP
14VQFN   
8X2SON    12UQFN
16UQFN   
12BGA MICROSTAR JUNIOR
12DSBGA
14SOIC
14TSSOP
14VQFN   
14TSSOP   
0.35 | 1ku    0.59 | 1ku    0.45 | 1ku    0.38 | 1ku    0.35 | 1ku    0.48 | 1ku    0.57 | 1ku    0.23 | 1ku    0.41 | 1ku    0.47 | 1ku    0.56 | 1ku