These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. The devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
The eight flip-flops of the AC374 devices are D-type edge-triggered flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (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 the 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 in bus-organized systems without need for interface or pullup components.
OE\ does not affect internal operations of the flip-flop. 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.
Products containing the "SN74AC374" keyword are: SN74AC374DBR , SN74AC374DBR , SN74AC374DBRG4 , SN74AC374DW , SN74AC374DW , SN74AC374DWE4 , SN74AC374DWE4 , SN74AC374DWG4 , SN74AC374DWG4 , SN74AC374DWR , SN74AC374DWR , SN74AC374DWRE4 , SN74AC374DWRE4 , SN74AC374DWRG4 , SN74AC374DWRG4 , SN74AC374N , SN74AC374N , SN74AC374NE4 , SN74AC374NS , SN74AC374NSE4Status | ACTIVE |
SubFamily | D-type flip-flop |
Technology Family | AC |
VCC | 6 |
Bits | 8 |
Voltage | 3.3^5 |
F @ nom voltage | 100 |
ICC @ nom voltage | 0.04 |
tpd @ Nom Voltage | 15.5^10.5 |
3-state output | Yes |
Rating | Catalog |
Operating temperature range | -40 to 85 |
Package Group | PDIP|20 |
Package size: mm2:W x L (PKG) | See datasheet (PDIP) |
Approx. price | 0.26 | 1ku |