74AXCH2T45 Series
2-bit 0.65V to 3.6V AXC dual-supply bus transciever with bus-hold
Manufacturer: Texas Instruments
Catalog(2 parts)
| Part | Supplier Device Package | Supplier Device Package▲▼ | Supplier Device Package▲▼ | Operating Temperature▲▼ | Operating Temperature▲▼ | Number of Bits per Element▲▼ | Mounting Type | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Package / Case | Number of Elements▲▼ | Current - Output High, Low▲▼ | Current - Output High, Low▲▼ | Package / Case▲▼ | Package / Case▲▼ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments SN74AXCH2T45DTMRTransceiver, Non-Inverting 1 Element 2 Bit per Element Output 8-X2SON (1.35x0.8) | 8-X2SON | 1.350000023841858 ul | 0.800000011920929 ul | -40 °C | 125 °C | 2 ul | Surface Mount | 3.5999999046325684 V | 0.6499999761581421 V | 8-XFDFN Exposed Pad | 1 ul | 0.012000000104308128 A | 0.012000000104308128 A | ||
Texas Instruments SN74AXCH2T45DCURTransceiver, Non-Inverting 1 Element 2 Bit per Element Output 8-VSSOP | -40 °C | 125 °C | 2 ul | Surface Mount | 3.5999999046325684 V | 0.6499999761581421 V | 8-VFSOP | 1 ul | 0.012000000104308128 A | 0.012000000104308128 A | 0.002311399905011058 m | 0.002300000051036477 m |
Key Features
• Fully configurable dual-rail design allows each port to operate with a power supply range from 0.65 V to 3.6 VOperating temperature from –40°C to +125°CGlitch-free power supply sequencingUp to 380 Mbps support when translating from 1.8 V to 3.3 VVCCisolation featureIf either VCCinput is below 100 mV, all I/O outputs are disabled and become high impedanceIoffsupports partial-power-down mode operationCompatible with AVC family level shiftersLatch-up performance exceeds 100 mA per JESD 78, Class IIESD protection exceeds JESD 228000-V human-body model (HBM)1000-V charged-device model (CDM)Fully configurable dual-rail design allows each port to operate with a power supply range from 0.65 V to 3.6 VOperating temperature from –40°C to +125°CGlitch-free power supply sequencingUp to 380 Mbps support when translating from 1.8 V to 3.3 VVCCisolation featureIf either VCCinput is below 100 mV, all I/O outputs are disabled and become high impedanceIoffsupports partial-power-down mode operationCompatible with AVC family level shiftersLatch-up performance exceeds 100 mA per JESD 78, Class IIESD protection exceeds JESD 228000-V human-body model (HBM)1000-V charged-device model (CDM)
Description
AI
The SN74AXCH2T45 is a two-bit non-inverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCAand VCCBsupplies 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. Additionally the SN74AXCH2T45 is compatible with a single-supply system.
The SN74AXCH2T45 device is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level of the direction-control input (DIR). The SN74AXCH2T45 device is designed so the control pin (DIR) is referenced to VCCA.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. If a supply is present for VCCA or VCCB, the bus-hold circuitry always remains active on the A or B inputs respectively, independent of the state of the direction control pin.
This device is fully specified for partial-power-down applications using the Ioffcurrent. The Ioffprotection 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 VCCisolation feature ensures that if either VCCAor VCCBis less than 100 mV, both I/O ports enter a high-impedance state by disabling their outputs.
Glitch-free power supply sequencing allows either supply rail to be powered on or off in any order while providing robust power sequencing performance.
The SN74AXCH2T45 is a two-bit non-inverting bus transceiver that uses two individually configurable power-supply rails. The device is operational with both VCCAand VCCBsupplies 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. Additionally the SN74AXCH2T45 is compatible with a single-supply system.
The SN74AXCH2T45 device is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level of the direction-control input (DIR). The SN74AXCH2T45 device is designed so the control pin (DIR) is referenced to VCCA.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. If a supply is present for VCCA or VCCB, the bus-hold circuitry always remains active on the A or B inputs respectively, independent of the state of the direction control pin.
This device is fully specified for partial-power-down applications using the Ioffcurrent. The Ioffprotection 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 VCCisolation feature ensures that if either VCCAor VCCBis less than 100 mV, both I/O ports enter a high-impedance state by disabling their outputs.
Glitch-free power supply sequencing allows either supply rail to be powered on or off in any order while providing robust power sequencing performance.