Price advantage of sn74avc4t245pwr tssop-16 voltage conversion transceiver
This 4-bit noninverting bus transceiver uses twoseparate configurable power-supply rails. The A portis designed to track VCCA. VCCA accepts any supplyvoltage from 1.2 V to 3.6 V. The B port is designed totrack VCCB. VCCB accepts any supply voltage from1.2 V to 3.6 V. The SN74AVC4T245 is optimized tooperate with VCCA/VCCB set at 1.4 V to 3.6 V. It isoperational with VCCA/VCCB as low as 1.2 V. Thisallows for universal low-voltage bidirectionaltranslation between any of the 1.2-V, 1.5-V, 1.8-V,2.5-V, and 3.3-V voltage nodes.
The SN74AVC4T245 device is designed forasynchronous communication between two databuses. The logic levels of the direction-control (DIR)input and the output-enable (OE) input activate eitherthe B-port outputs or the A-port outputs or place bothoutput ports into the high-impedance mode. Thedevice transmits data from the A bus to the B buswhen the B-port outputs are activated, and from the Bbus to the A bus when the A-port outputs areactivated. The input circuitry on both A and B ports isalways active and must have a logic HIGH or LOWlevel applied to prevent excess ICC and ICCZ.The SN74AVC4T245 device is designed so that thecontrol pins (1DIR, 2DIR, 1OE, and 2OE) aresupplied by VCCA.
This device is fully specified for partial-power-downapplications using Ioff. The Ioff circuitry disables theoutputs, preventing damaging current backflowthrough the device when it is powered down.
The VCC isolation feature ensures that if either VCCinput is at GND, then both ports are in the high-impedance state.
To ensure the high-impedance state during power upor power down, OE should be tied to VCC through apullup resistor; the minimum value of the resistor isdetermined by the current-sinking capability of thedriver.
Features
• Control Inputs VIH/VIL Levels Are Referenced toVCCA Voltage
• Fully Configurable Dual-Rail Design Allows EachPort to Operate Over the Full 1.2-V to 3.6-VPower-Supply Range
• I/Os Are 4.6-V Tolerant
• Ioff Supports Partial Power-Down-Mode Operation
• Maximum Data Rates
– 380 Mbps (1.8-V to 3.3-V Translation)
– 200 Mbps (< 1.8-V to 3.3-V Translation)
– 200 Mbps (Translate to 2.5 V or 1.8 V)
– 150 Mbps (Translate to 1.5 V)
– 100 Mbps (Translate to 1.2 V)
• Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 8000-V Human-Body Model (A114-A)
– 150-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
Applications
• Personal Electronics
• Industrial
• Enterprise
• Telecom