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SN74AVC4T245RGYR / VQFN-16 / Logic ICs
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/Vcce set at 1.4 V to 3.6 V. It isoperational with VccA/Vcce as low as 1.2 V. Thisallows for universal low-voltagebidirectionatranslation 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 for asynchronous 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,10E,and 20E) aresupplied by VccA.
This device is fully specified for partial-power-downapplications
using lof. The lof circuitry disables theoutputs, preventing
damaging current backflowthrough the device when it is powered
down.
The Vcc isolation feature ensures that if either Vcoinput is at
GND, then both ports are in the highimpedance 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.
| Product Attribute | Attribute Value |
|---|---|
| Texas Instruments | |
| Product Category: | Translation - Voltage Levels |
| SN74AVC4T245 | |
| Bus Transceiver | |
| SMD/SMT | |
| VQFN-16 | |
| 1.2 V | |
| 3.6 V | |
| - 40 C | |
| + 85 C | |
| 2.9 ns | |
| Reel | |
| Cut Tape | |
| MouseReel | |
| Brand: | Texas Instruments |
| Data Rate: | 380 Mb/s |
| Features: | Partial power down (Ioff), Over-voltage tolerant inputs, Output enable |
| High Level Output Current: | 12 mA |
| Logic Family: | CMOS |
| Low Level Output Current: | 12 mA |
| Moisture Sensitive: | Yes |
| Operating Temperature Range: | - 40 C to + 85 C |
| Output Type: | 3-State |
| Product Type: | Translation - Voltage Levels |
| Factory Pack Quantity: | 3000 |
| Subcategory: | Logic ICs |
| Unit Weight: | 0.001305 oz |
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