General description

The 74AVCH4T245 is a 4-bit, dual supply transceiver that enables bidirectional level translation. The device can be used as two 2-bit transceivers or as a 4-bit transceiver. It features two 2-bit input-output ports (nAn and nBn), a direction control input (nDIR), a output enable input (nOE) and dual supply pins (VCC(A) and VCC(B)). Both VCC(A) and VCC(B)can be supplied at any voltage between 0.8 V and 3.6 V making the device suitable for translating between any of the low voltage nodes (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V and 3.3 V). Pins nAn, nOEand nDIR are referenced to VCC(A)and pins nBn are referenced to VCC(B). A HIGH on nDIR allows transmission fromnAn to nBn and a LOW on nDIR allows transmission from nBn to nAn. The output enable input (nOE) can be used to disable the outputs so the buses are effectively isolated.

Features and benefits

 Wide supply voltage range:

VCC(A): 0.8 V to 3.6 V

VCC(B): 0.8 V to 3.6 V

 Complies with JEDEC standards:

JESD8-12 (0.8 V to 1.3 V)

JESD8-11 (0.9 V to 1.65 V)

JESD8-7 (1.2 V to 1.95 V)

JESD8-5 (1.8 V to 2.7 V)

JESD8-B (2.7 V to 3.6 V)

 ESD protection:

HBM JESD22-A114E Class 3B exceeds 8000 V

MM JESD22-A115-A exceeds 200 V

 CDM JESD22-C101C exceeds 1000 V

 Maximum data rates:

380 Mbit/s (≥.8 V to 3.3 V translation)

200 Mbit/s (≥1.1 V to 3.3 V translation)

200 Mbit/s (≥1.1 V to 2.5 V translation)

200 Mbit/s (≥1.1 V to 1.8 V translation)

150 Mbit/s (≥1.1 V to 1.5 V translation)

100 Mbit/s (≥1.1 V to 1.2 V translation)

 Suspend mode

 Bus hold on data inputs

 Latch-up performance exceeds 100 mA per JESD 78 Class II

 Inputs accept voltages up to 3.6 V

 IOFFcircuitry provides partial Power-down mode operation

 Multiple package options

 Specified from40°C to +85°C and 40°C to +125°C