SN74AVC4T774PW

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1. Describe

This 4-bit non-inverting bus transceiver uses two independently configurable power rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.1 V to 3.6 V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.1 to 3.6 V. The SN74AVC4T774 is optimized to operate at VCCA/VCCB from 1.4 V to 3.6 V. It operates from VCCA/VCCB as low as 1.2 V. This allows direction switching between general purpose low voltage dual - 1.2-V, 1.5-V, 1.8-V, 2.5-V and 3.3-V voltage nodes. The SN74AVC4T774 is designed for asynchronous communication between data buses. Logic levels at the direction control (DIR) input and output enable (OE) input activate either the B port output or the A port output, or place both output ports in high impedance mode. The device transfers data from the A bus to the B bus when the B output is activated, and from the B bus to the A bus when the A output is activated. The input circuits on the A and B ports are always active and a logic high or low must be applied to prevent excessive ICC and ICCZ.

2. Feature

    1. Each channel has an independent DIR control input

    2. Control input VIH/VIL levels are referenced to VCCA voltage

    3. Fully configurable dual-rail design allows each port to operate over the full 1.1V to 3.6V supply range

    4. I/Os are 4.6V tolerant

    5. Ioff supports partial power-down mode operation

    6. Typical data rates

        – 380 Mbps (1.8V to 3.3V conversion)

        – 200 Mbps (<1.8-V to 3.3-V conversion)

        – 200 Mbps (converted to 2.5 V or 1.8 V)

        – 150 Mbps (converted to 1.5 V)

        – 100 Mbps (converted to 1.2 V)

    7. Latch-up performance over 100 mA per JESD 78, Class II

    8. ESD protection exceeds the following levels (tested according to JESD 22)

        – ±8000-V Human Body Model (A114-A)

        – 250-V machine model (A115-A)

        – ±1500V charging device model (C101)

3. Application

    1. Personal electronics

    2. industrial

    3. Enterprise

    4. Telecom

4. Pin configuration

5. Pin Description

6. Feature Description

Both VCCA and VCCB can be supplied at any voltage between 1.1 V and 3.6 V making the device suitable for translating between any of the low-voltage nodes (1.2 V, 1.8 V, 2.5 V and 3.3 V). SN74AVC4T774 can support high data rate application. The translated signal data rate can be up to 380 Mbps when signal is translated from 1.8 V to 3.3 V. Ioff will prevent backflow current by disabling I/O output circuits when device is in partial-power-down mode.

7. Application Information

The SN74AVC4T774 device can be used in level-translation applications for interfacing devices or systems operating at different interface voltages with one another. The SN74AVC4T774 device is ideal for use in applications where a push-pull driver is connected to the data I/Os. Its max data rate can be up to 380 Mbps when device translate signal from 1.8 V to 3.3 V.