Compaq EV67 User Manual
Alpha 21264/EV67 Hardware Reference Manual
Electrical Data
9–1
9
Electrical Data
This chapter describes the electrical characteristics of the 21264/EV67 and its interface
pins. The chapter contains both ac and dc electrical characteristics and power supply
considerations, and is organized as follows:
pins. The chapter contains both ac and dc electrical characteristics and power supply
considerations, and is organized as follows:
•
Electrical characteristics
•
DC characteristics
•
Power supply sequencing
•
AC characteristics
9.1 Electrical Characteristics
Table 9–1 lists the maximum electrical ratings for the 21264/EV67.
Notes:
Stresses above those listed under the given maximum electrical ratings may
cause permanent device failure. Functionality at or above these
limits is not implied. Exposure to these limits for extended periods of time
may affect device reliability.
cause permanent device failure. Functionality at or above these
limits is not implied. Exposure to these limits for extended periods of time
may affect device reliability.
Power data is preliminary and based on measurements from a limited set of
material.
material.
Table 9–1 Maximum Electrical Ratings
Characteristics
Ratings
Storage temperature
–55
°
C to +125
°
C (–67
°
F to 257
°
F)
Junction temperature
0
°
C to 100
°
C (32
°
F to 212
°
F)
Maximum dc voltage on signal pins
VDD + 400 mV
Minimum dc voltage on signal pins
VSS – 400 mV
Maximum power @ indicated VDD
for the following frequencies:
for the following frequencies:
Frequency
Peak Power
600 MHz
73 W @ 2.1 V
667 MHz
80 W @ 2.1 V
700 MHz
85 W @ 2.1 V
733 MHz
88 W @ 2.1 V
750 MHz
90 W @ 2.1 V