SN74AXC1T45 Single-bit dual-supply bus transceiver | TI.com

SN74AXC1T45 (ACTIVE)

Single-bit dual-supply bus transceiver

 

Description

The SN74AXC1T45 is a single-bit noninverting bus transceiver that uses two separate configurable power-supply rails. The device is operational with both VCCA and VCCB supplies as low as 0.65 V. The A port is designed to track VCCA, which accepts any supply voltage from 0.65 V to 3.6 V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65 V to 3.6 V.

The DIR pin determines the direction of signal propagation. With the DIR pin configured HIGH, translation is from Port A to Port B. With DIR configured LOW, translation is from Port B to Port A. The DIR pin is referenced to VCCA, meaning that its logic-high and logic-low thresholds track with VCCA.

This device is fully specified for partial-power-down applications using the Ioff current. The Ioff protection circuitry ensures that no excessive current is drawn from or to an input, output, or combined I/O that is biased to a specific voltage while the device is powered down.

The VCC isolation feature ensures that if either VCCA or VCCB is less than 100 mV, both I/O ports enter a high-impedance state by disabling their outputs.

The glitch suppression circuitry enables either supply rail to be powered on or off in any order, providing robust power sequencing performance.

Features

  • Up and Down Translation Across 0.65 V to 3.6 V
  • Operating Temperature: –40°C to +125°C
  • Designed with glitch suppression circuitry to improve power sequencing performance
  • Maximum Quiescent Current (ICCA + ICCB) of 6 µA (85°C Maximum) and 14 µA (125°C Maximum)
  • Up to 500-Mbps Support When Translating from 1.8 to 3.3V
  • VCC Isolation Feature
    • If Either VCC Input is Below 100 mV, All I/Os Outputs are Disabled and Become High-Impedance
  • Ioff Supports Partial-Power-Down Mode Operation
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    • 8000-V Human Body Model
    • 1000-V Charged-Device Model

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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)
IOH (Max) (mA)
IOL (Max) (mA)
F @ nom voltage (Max) (Mhz)
ICC @ nom voltage (Max) (mA)
Rating
Operating temperature range (C)
Package Group
SN74AXC1T45 SN74AVC1T45 SN74AVC4T245 SN74AVC4T245-Q1 SN74AVC4T774 SN74AVCH1T45 SN74AVCH4T245 SN74AXC4T245 SN74AXC8T245 SN74AXCH1T45 SN74LVC1T45
AXC     AVC     AVC     AVC     AVC     AVC     AVC     AXC     AXC     AXC     LVC    
1     1     4     4     4     1     4     4     8     1     1    
0.65     1.2     1.2     1.2     1.2     1.2     1.2     0.65     0.65     0.65     1.65    
3.6     3.6     3.6     3.6     3.6     3.6     3.6     3.6     3.6     3.6     5.5    
0.7
0.8
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    
1.2
1.5
1.8
2.5
3.3    
1.2
1.5
1.8
2.5
3.3    
1.8     0.7
0.8
0.9
1.2
1.5
1.8
2.5
3.3    
  1.8
2.5
3.3
5    
-12     -12     -12     -12     -12     -12     -12     -12     -12     -12     -32    
12     12     12     12     12     12     12     12     12     12     32    
200     100     100     100     100     100     100     190     190     250     150    
0.014     0.0009     0.016     0.016     0.016     0.01     0.016     0.040     0.055       0.004    
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