CLVC16T245MDGGREP

16-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs. This 16-bit noninverting bus transceiver uses two separate configurable power-supply rails. The A port is designed to track VCCA. VCCA accepts any supply voltage from 1.65V to 5.5V. The B port is designed to track VCCB. VCCB accepts any supply voltage from 1.65V to 5.5V. This enables universal low-voltage bidirectional translation between 1.8V, 2.5V, 3.3V, and 5V voltage nodes. The SN74LVC16T245 is designed for asynchronous communication between two data buses. The logic levels on the direction control (DIR) input and output enable (OE) input activate the B-port outputs, the A-port outputs, or place both output ports in the high-impedance state. When the B-port outputs are activated, the device transmits data from the A bus to the B bus; when the A-port outputs are activated, the device transmits data from the B bus to the A bus. The input circuitry on both the A and B ports remains always active and must be driven to a logic-high or logic-low level to prevent excessive ICC and ICCZ. The SN74LVC16T245 is designed such that the control pins (1DIR, 2DIR, 1OE, and 2OE) are powered by VCCA. The device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging backflow current through the device when it is powered down. The VCC isolation feature ensures that both ports are in the high-impedance state when either VCC is grounded. To ensure the high-impedance state during power-up or power-down, OE should be connected to VCC through a pullup resistor; the minimum value of this resistor is determined by the current-sinking capability of the driver.

Applications

• Medical applications

Key features

• Control input V_IH and V_IL levels referenced to V_CCA voltage
• V_CC isolation: if either V_CC input is tied to GND, both ports enter high-impedance state
• Overvoltage-tolerant inputs and outputs enable mixed-voltage data communication
• Fully configurable dual supply rail design allows each port to operate across the full 1.65V–5.5V supply voltage range
• Supports partial power-down mode operation
• Latch-up performance exceeds 100mA (per JESD 78, Class II)
• ESD protection exceeds JESD 22 specifications:
• 2000V Human Body Model (A114-A)
• 200V Machine Model (A115-A)
• 1000V Charged Device Model (C101)