74ACT11593

`Supply voltage range, VCC  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 V to 7 V
`Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 V to VCC + 0.5 V
`Output voltage range, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5 V to VCC + 0.5 V
`Input clamp current, IIK (VI < 0 or VI > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±20 mA
`Output clamp current, IOK (VO < 0 or VO > VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±50 mA
`Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±50 mA
`Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . .±225 mA
`Storage temperature range  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65°C to 150°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated  nditions for extended periods may affect device reliability.
NOTE 1: The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are  ved.

The 74ACT11593 contains eight multiplexed parallel I/Os with 3-state output capability and an 8-bit storage register that feeds an 8-bit binary counter. Both the register and the counter have individual positive-edge triggered clocks.

The function tables of the 74ACT11593 show the operation of the counter clock-enable (CCKEN, CCKEN) and output-enable (OE, OE) inputs.

The counter input has direct load and clear functions. A low-going RCO pulse is obtained when the counter reaches the hex word FF.

Expansion is easily accomplished for two stages by connecting RCO of the first stage toCCKEN of the second stage. Cascading for larger count chains is accomplished by connecting RCO of each stage to CCK of the following stage.

The 74ACT11593 is characterized for operation from 40°C to 85°C.