The 'LVTH16373 devices are 16-bit transparent D-type latches with 3-state outputs designed for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
These devices can be used as two 8-bit latches or one 16-bit latch. When the latch-enable (LE) input is high, the Q outputs follow the data (D) inputs. When LE is taken low, the Q outputs are latched at the levels set up at the D inputs.
A buffered output-enable (OE) input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without interface or pullup components.
OE does not affect internal operations of the latch. Old data can be retained or new data can be entered while 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.
When VCC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, 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.
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 "SN74LVTH16373" keyword are: SN74LVTH16373DGG , SN74LVTH16373DGGR , SN74LVTH16373DGGR , SN74LVTH16373DGGR TSSOP4 , SN74LVTH16373DGGR(P/B) , SN74LVTH16373DGGR(PB FRE , SN74LVTH16373DGGRG4 , SN74LVTH16373DL , SN74LVTH16373DL , SN74LVTH16373DLG4 , SN74LVTH16373DLG4 , SN74LVTH16373DLR , SN74LVTH16373DLR , SN74LVTH16373DLRG4 , SN74LVTH16373GQLR , SN74LVTH16373GQLR , SN74LVTH16373GRDR , SN74LVTH16373GRDR , SN74LVTH16373ZQLR , SN74LVTH16373ZQLRWidebus is a trademark of Texas Instruments.
Status | ACTIVE |
SubFamily | D-type latch |
Technology Family | LVT |
VCC | 3.6 |
Bits | 16 |
Voltage | 3.3 |
F @ nom voltage | 160 |
ICC @ nom voltage | 5 |
tpd @ Nom Voltage | 3.8 |
3-state output | Yes |
Rating | Catalog |
Operating temperature range | -40 to 85 |
Package Group | BGA MICROSTAR JUNIOR|54 |
Package size: mm2:W x L (PKG) | [pf]56BGA MICROSTAR JUNIOR[/pf]: 32 mm2: 4.5 x 7 (BGA MICROSTAR JUNIOR|56) |
Approx. price | 0.71 | 1ku |