This 20-bit flip-flop is designed for low-voltage 1.65-V to 3.6-V VCC operation.
The 20 flip-flops of the SN74ALVCH162721 are edge-triggered D-type flip-flops with qualified clock storage. On the positive transition of the clock (CLK) input, the device provides true data at the Q outputs if the clock-enable (CLKEN)\ input is low. If CLKEN\ is high, no data is stored.
A buffered output-enable (OE)\ input places the 20 outputs in either a normal logic state (high or low level) 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 operation 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.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The outputs, which are designed to sink up to 12 mA, include equivalent 26- resistors to reduce overshoot and undershoot.
The SN74ALVCH162721 is characterized for operation from 40°C to 85°C.
Products containing the "SN74ALVCH162721" keyword are: SN74ALVCH162721DL , SN74ALVCH162721DLR , SN74ALVCH162721DLR , SN74ALVCH162721GR , SN74ALVCH162721GR , SN74ALVCH162721GRE4 , SN74ALVCH162721GRG4NOTE: For tape and reel order entry: The DGGR package is abbreviated to GR.
Widebus, EPIC are trademarks of Texas Instruments.
Status | ACTIVE |
SubFamily | D-type flip-flop |
Technology Family | ALVC |
VCC | 3.6 |
Bits | 20 |
Voltage | 1.8^2.5^2.7^3.3 |
F @ nom voltage | 150 |
ICC @ nom voltage | 0.04 |
tpd @ Nom Voltage | 6.7^6.2^5.3 |
3-state output | Yes |
Rating | Catalog |
Operating temperature range | -40 to 85 |
Package Group | SSOP|56 |
Package size: mm2:W x L (PKG) | [pf]56SSOP[/pf]: 191 mm2: 10.35 x 18.42 (SSOP|56) |
Approx. price | 1.65 | 1ku |