These octal buffers and line drivers are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.
The LVTH244A devices are organized as two 4-bit line drivers with separate output-enable (OE)\ inputs. When OE\ is low, the devices pass data from the A inputs to the Y outputs. When OE\ is high, the outputs are in the high-impedance state.
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.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.
Products containing the "SN74LVTH244A" keyword are: SN74LVTH244ADB , SN74LVTH244ADB , SN74LVTH244ADB(LXH244A) , SN74LVTH244ADBDW , SN74LVTH244ADBG4 , SN74LVTH244ADBG4 , SN74LVTH244ADBLE , SN74LVTH244ADBR , SN74LVTH244ADBR , SN74LVTH244ADBR LXH244A , SN74LVTH244ADBRE4 , SN74LVTH244ADBRE4 , SN74LVTH244ADBRG4 , SN74LVTH244ADBRG4 , SN74LVTH244ADW , SN74LVTH244ADWE4 , SN74LVTH244ADWE4 , SN74LVTH244ADWG4 , SN74LVTH244ADWG4 , SN74LVTH244ADWRStatus | ACTIVE |
SubFamily | Non-Inverting buffer/driver |
Technology Family | LVT |
VCC | 3.6 |
Bits | 8 |
Voltage | 3.3 |
F @ nom voltage | 160 |
tpd @ Nom Voltage | 3.5 |
ICC @ nom voltage | 0.005 |
IOL | 64 |
IOH | -32 |
Rating | Catalog |
Operating temperature range | -40 to 85 |
Package Group | BGA MICROSTAR JUNIOR|20 |
Package size: mm2:W x L (PKG) | [pf]20BGA MICROSTAR JUNIOR[/pf]: 12 mm2: 3 x 4 (BGA MICROSTAR JUNIOR|20) |
Approx. price | 0.24 | 1ku |