17

ICS1524A

ICS1524A Rev F 05/13/10

Absolute Maximum Ratings

VDD, VDDA, VDDQ (measured to VSS) . . . . . . . . . . . . . . . . . 4.3V

Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS – 0.3V to 5.5V

Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSSA – 0.3V to VDDA +0.3V

Digital Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSSQ – 0.3V to VDDQ +0.3V

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175°C

Soldering Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C

ESD Susceptibility* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . > 2 KV

(*Electrostatic-sensitive devices. Do not open or handle except in a static-free workstation.)

Power Supply Considerations

The ICS1524A incorporates special internal power-on reset circuitry that requires no external reset signal connection. The sup-

ply voltage (VDD) must remain within the recommended operating conditions during normal operation. To reset the ICS1524A,

the supply voltage at the part must be reduced below the threshold voltage (Vth) of the power-on reset circuit. The supply volt-

age must remain below that threshold voltage such that board power conditioning capacitors are drained and the proper reset

state is latched. The amount of time (td) to hold the voltage in a reset state varies with the design. However, a typical value of

10 ms should be sufficient.

Supply

Voltage

td

V = 1.8V

th

Vmin