This octal registered transceiver is designed for 1.65-V to 3.6-V VCC operation.
The SN74LVC543A contains two sets of D-type latches for temporary storage of data flowing in either direction. Separate latch-enable (LEAB\ or LEBA\) and output-enable (OEAB\ or OEBA\) inputs are provided for each register to permit independent control in either direction of data flow.
The A-to-B enable (CEAB)\ input must be low to enter data from A or to output data from B. If CEAB\ is low and LEAB\ is low, the A-to-B latches are transparent; a subsequent low-to-high transition of LEAB\ places the A latches in the storage mode. With CEAB\ and OEAB\ both low, the 3-state B outputs are active and reflect the data present at the output of the A latches. Data flow for B to A is similar to that of A to B, but uses CEBA\, LEBA\, and OEBA\.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.
Products containing the "SN74LVC543A" keyword are: SN74LVC543ADBR , SN74LVC543ADBR , SN74LVC543ADBR LC543A , SN74LVC543ADBRG4 , SN74LVC543ADW , SN74LVC543ADW , SN74LVC543ADWG4 , SN74LVC543ADWG4 , SN74LVC543ADWR , SN74LVC543ADWR , SN74LVC543APW , SN74LVC543APW , SN74LVC543APWE4 , SN74LVC543APWG4 , SN74LVC543APWR , SN74LVC543APWR , SN74LVC543APWR LC543A , SN74LVC543APWRE4 , SN74LVC543APWRE4 , SN74LVC543APWRG4Status | ACTIVE |
SubFamily | Registered transceiver |
Technology Family | LVC |
VCC | 3.6 |
Bits | 8 |
Voltage | 1.8^2.5^2.7^3.3 |
F @ nom voltage | 100 |
tpd @ Nom Voltage | 9.5^8.5 |
IOL | 24 |
Rating | Catalog |
Operating temperature range | -40 to 85 |
Package Group | SOIC|24 |
Package size: mm2:W x L (PKG) | [pf]24SOIC[/pf]: 160 mm2: 10.3 x 15.5 (SOIC|24) |
Approx. price | 0.46 | 1ku |
Schmitt Trigger | No |