These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
The eight flip-flops of the \x92HC374 devices are edge-triggered D-type flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels that were set up at the data (D) inputs.
An output-enable (OE) input places the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.
OE does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered while 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.
Status | ACTIVE |
SubFamily | D-type flip-flop |
Technology Family | HC |
VCC | 6 |
Bits | 8 |
Voltage | 3.3^5 |
F @ nom voltage | 28 |
ICC @ nom voltage | 0.08 |
tpd @ Nom Voltage | 38 |
3-state output | Yes |
Rating | Space |
Operating temperature range | -55 to 125 |
Package Group | CDIP|20 |
Package size: mm2:W x L (PKG) | See datasheet (CDIP) |
Approx. price |