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11-2 M68040 USER’S MANUAL MOTOROLA
11.3 DC ELECTRICAL SPECIFICATIONS (V CC = 5.0 VDC ±5 %)
Characteristic Symbol Min Max Unit
Input High Voltage VIH 2V
CC V
Input Low Voltage VIL GND 0.8 V
Undershoot — 0.8 V
Input Leakage Current @ 0.5/2.4 V
AVEC , BCLK, BG, CDIS , MDIS, IPL≈, PCLK, RSTI, SCx,
TBI, TLNx , TCI , TCK, TEA
Iin 20 20 µA
Hi-Z (Off-State) Leakage Current @ 0.5/2.4 V
An, BB, CIOUT , Dn, LOCK, LOCKE, R/ W, SIZx, TA, TDO,
TIP, TMx, TLNx, TS, TTx, UPAx
ITSI 20 20 µA
Signal Low Input Current, VIL = 0.8 V
TMS, TDI, TRST IIL –1.1 –0.18 mA
Signal High Input Current, VIH = 2.0 V
TMS, TDI, TRST IIH –0.94 –0.16 mA
Output High Voltage, IOH = 5 mA (Small Buffer Mode) VOH 2.4 — V
Output Low Voltage, IOL = 5 mA (Small Buffer Mode) VOL — 0.5 V
Output High Voltage, IOH = 55 mA (Large Buffer Mode) VOH 2.4 — V
Output Low Voltage, IOL = 55 mA (Large Buffer Mode) VOL — 0.5 V
Capacitance*, Vin = 0 V, f = 1 MHz Cin —25pF
*Capacitance is periodically sampled rather than 100% tested.
11.4 POWER DISSIPATION
Buffer Mode 25 MHz 33 MHz 40 MHz
Worst Case (VCC = 5.25 V , TA = 0°C)
Small Unterminated, IOL = IOH = 5 mA 4.9 W 6.2 W 7.2 W
Large Unterminated, IOL = IOH = 5 mA 5.1 W 6.6 W 7.7 W
Large Terminated, 50 , 2.5 V, IOL = IOH = 55 mA 6.5 W 8.0 W 9.1 W
Typical Values (VCC = 5 V, TJ = 90°C)*
Small 3.0 W 4.1 W 4.5 W
Large Unterminated 3.3 W 4.4 W 4.8 W
Large Terminated, 50 , 2.5 V 4.7 W 5.8 W 6.2 W
*This information is for system reliability purposes.
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