The SN54LVCH244A octal buffer/line driver is designed for 2.7-V to 3.6-V VCC operation, and the SN74LVCH244A octal buffer/line driver is designed for 1.65-V to 3.6-V VCC operation.
These devices are organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low, these devices pass data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
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.
These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are 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.
Products containing the "SN74LVCH244A" keyword are: SN74LVCH244ADB , SN74LVCH244ADBQ , SN74LVCH244ADBQR , SN74LVCH244ADBQR , SN74LVCH244ADBQRE4 , SN74LVCH244ADBQRE4 , SN74LVCH244ADBQRG4 , SN74LVCH244ADBR , SN74LVCH244ADBR LCH244A , SN74LVCH244ADBRG4 , SN74LVCH244ADGVR , SN74LVCH244ADGVRG4 , SN74LVCH244ADW , SN74LVCH244ADW , SN74LVCH244ADWG , SN74LVCH244ADWG4 , SN74LVCH244ADWG4 , SN74LVCH244ADWR , SN74LVCH244ADWR , SN74LVCH244ADWRG4Status | ACTIVE |
SubFamily | Non-Inverting buffer/driver |
Technology Family | LVC |
VCC | 3.6 |
Bits | 8 |
Voltage | 1.8^2.5^2.7^3.3 |
F @ nom voltage | 100 |
tpd @ Nom Voltage | 6.9^5.9 |
ICC @ nom voltage | 0.01 |
IOL | 24 |
IOH | -24 |
Rating | Catalog |
Operating temperature range | -40 to 85 |
Package Group | SOIC|20 |
Package size: mm2:W x L (PKG) | [pf]20SO[/pf]: 98 mm2: 7.8 x 12.6 (SO|20) |
Approx. price | 0.12 | 1ku |