© 2000 Scenix Semiconductor, Inc. All rights reserved. - 42 - www.scenix.com SX18AC/SX20AC/SX28AC/SX18AC75/SX20AC75/SX28AC75 17.4 DC Characteristics SX18/20/28AC75 (Temp Range: 0°C <= Ta <= +70°C) Note:Data in the Typical (“TYP”) column is at 5V, 25°C unless otherwise stated. Symbol Parameter Conditions Min Typ Max Units V_dd Supply Voltage (Note 1) F_osc= 75 MHz 4.5 - 5.5 V S_Vdd V_dd rise rate 0.05 - - V/ms I_dd Supply Current, active V_dd = 5.0V, F_osc = 75 MHz (Ext.) - 100 105 mA I_pd Supply Current, power down V_dd = 4.5V, WDT enabled V_dd = 4.5V, WDT disabled - 110
100 µA
µA V_ih, V_il Input Levels
MCLR, OSC1, RTCC Logic High Logic Low All Other Inputs
CMOS Logic High    Logic Low
TTL Logic High Logic Low 0.8V_dd V_ss 0.7V_dd V_ss 2.0
V_ss V_dd 0.2V_dd V_dd 0.3V_dd V_dd 0.8 V
V V
V V
V I_il Input Leakage Current V_in = V_dd or V_ss -1.0 +1.0 µA I_ip Weak Pullup Current V_dd = 5.5V, V_in = 0V 100 160 µA V_oh Output High Voltage
OSC2, Ports B, C
Port A Ioh = 20mA, Vdd = 4.5V
Ioh = 30mA, Vdd = 4.5 Vdd-0.7
Vdd-0.7 V
V V_ol Output Low Voltage
All Ports, OSC2 Iol = 30mA, Vdd = 4.5V 0.6 V