74AVC20T245_15 Datasheet, PDF(1/27 Page) NXP Semiconductors – 74AVC20T245

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74AVC20T245_15 Datasheet, PDF (1/27 Pages) NXP Semiconductors – 74AVC20T245_15 voltage translation; 3-state

74AVC20T245

20-bit dual supply translating transceiver with configurable

voltage translation; 3-state

Rev. 7 â 8 March 2012

Product data sheet

1. General description

The 74AVC20T245 is a 20-bit, dual supply transceiver that enables bi-directional voltage

level translation. The device can be used as two 10-bit transceivers or as a single 20-bit

transceiver. It features four 10-bit input-output ports (1An, 1Bn and 2An, 2Bn), two output

enable inputs (nOE), two direction inputs (nDIR) and dual supplies (VCC(A) and VCC(B)).

VCC(A) and VCC(B) can be independently supplied at any voltage between 0.8 V and 3.6 V

making the device suitable for bi-directional voltage level translation 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. The 1An and 2An ports, nOE

and nDIR are referenced to VCC(A), the 1Bn and 2Bn ports are referenced to VCC(B). A

HIGH on a 1DIR allows transmission from 1An to 1Bn and a LOW on 1DIR allows

transmission from 1Bn to 1An. A HIGH on nOE causes the outputs to assume a HIGH

impedance OFF-state.

The device is fully specified for partial power-down applications using IOFF. The IOFF

circuitry disables the output, preventing any damaging backflow current through the

device when it is powered down. In suspend mode when either VCC(A) or VCC(B) are at

GND level, all output ports will assume a high impedance OFF-state.

2. Features and benefits

ï® Wide supply voltage range:

ïµ VCC(A): 0.8 V to 3.6 V

ïµ VCC(B): 0.8 V to 3.6 V

ï® Complies with JEDEC standards:

ïµ JESD8-12 (0.8 V to 1.3 V)

ïµ JESD8-11 (0.9 V to 1.65 V)

ïµ JESD8-7 (1.2 V to 1.95 V)

ïµ JESD8-5 (1.8 V to 2.7 V)

ïµ JESD8-B (2.7 V to 3.6 V)

ï® ESD protection:

ïµ HBM JESD22-A114F Class 3B exceeds 8000 V

ïµ MM JESD22-A115-A exceeds 200 V

ïµ CDM JESD22-C101C exceeds 1000 V

ï® Maximum data rates:

ïµ 380 Mbit/s (ï³ 1.8 V to 3.3 V translation)

ïµ 260 Mbit/s (ï³ 1.1 V to 3.3 V translation)

ïµ 260 Mbit/s (ï³ 1.1 V to 2.5 V translation)

ïµ 210 Mbit/s (ï³ 1.1 V to 1.8 V translation)

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