Packaging information
| Package | Pins SOT-23 (DBV) | 6 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the SN74AXC1T45
- 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 10µA (85°C maximum) and 16µA (125°C maximum)
- Up to 500Mbps support when translating from 1.8 to 3.3V
- VCC isolation feature:
- If either VCC input is below 100mV, all I/Os outputs are disabled and become high-impedance
- Ioff supports partial-power-down mode operation
- Latch-up performance exceeds 100mA per JESD 78, Class II
- ESD protection exceeds JESD 22:
- 8000-V human body model
- 1000-V charged-device model
Description for the SN74AXC1T45
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 3.6V. The B port is designed to track VCCB, which also accepts any supply voltage from 0.65 V to 3.6V.
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 100mV, 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.