HP E3491A, Installation And Service Manual

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Maximum Ratings
CharacteristicS for HP E3491A Pentium Probe Notes Symbol Min Max Unit
Input voltage range (Vcct only) 1, 2 V
in
-0.3 5.5 V
Input voltage range (All others) V
in
-0.5 5.5 V
Input Current (Vcct only) I
il
15 µ
A
Input High Voltage (except Vcct) 3 V
ih
2.0 V
Input Low Voltage (except Vcct) 3 V
il
0.8 V
Input High Current 3 I
ih
-15 µ
A
Input Low Current 3 I
il
100 µ
A
Output High Voltage 4 V
oh
2.4 Vcct + 0.5 V
Output Low Voltage 4 V
ol
0.5 V
Output High Current 4 I
oh
3 mA
Output Low Current 4 I
ol
-4 mA
Notes
1 Vcct = target system microprocessor voltage
2 When connected to a Pentium 735/90 or 815/100 this voltage should not exceed the Vcc of the microprocessor
3 INIT, PRDY, RESET, TDO
4 TCK, TDI, TMS, TRST#, R/S#, DBRESET
CharacteristicS for HP E2457A Pentium
Preprocessor, J3 and J6 Notes Symbol Min Max Unit
Output High Voltage (J3 only) 5 V
oh
2.4 Vcct + 0.5 V
Output Low Voltage (J3 only) 5 V
ol
0.5 V
Output High Current (at Voh, J3 only) 5 I
oh
3 mA
Output Low Current (at Vol, J3 only) 5 I
ol
-4 mA
Output High Voltage (J6 only) 6 V
oh
2.4 5.0 V
Output Low Voltage (J6 only) 6 V
ol
0.55 V
Output High Current (at Voh, J6 only) 6 I
oh
3 mA
Output Low Current (at Vol, J6 only) 6 I
ol
-64 mA
Notes
5 J3 = DBRESET from the HP E3491A
6 J6 = inverted DBRESET from the HP E2457A
Specifications and Characteristics
Electrical Specifications
35