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TS68C429AVR1B/C View Datasheet(PDF) - Atmel Corporation

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TS68C429AVR1B/C Datasheet PDF : 43 Pages
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Unless otherwise stated, all voltages are referenced to the reference terminal.
Table 2. Recommended Condition of Use
Symbol
Parameter
Test conditions
Min
VCC
VIL
VIH
Tcase
Supply Voltage
Low Level Input Voltage
High Level Input Voltage
Operating Temperature
4.5
-0.5
2.25
M suffix
-55
V suffix
-40
CL
Output Loading Capacitance
tr(c)
Clock Rise Time (See Figure 3)
tf(c)
Clock Fall Time (See Figure 3)
fc
Clock System Frequency
(See Figure 3)
0.5
Max
5.5
0.8
5.8
+125
+85
130
5
5
20
Units
V
V
V
°C
°C
pF
ns
ns
MHz
This device contains protective circuitry against damage due to high static voltages or
electrical fields: however, it is advised that normal precautions be taken to avoid applica-
tion of any voltages higher than maximum-rated voltages to this high-impedance circuit.
Reliability of operation is enhanced if unused inputs are tied to an appropriate logic volt-
age level (e.g., either GND or VCC).
Figure 3. Clock Input Timing Diagram
tcyc
tCL
tCH
2.25V
0.8V
tCR
tCF
Note:
Timing measurements are referenced to and from a low of 0.8-volt and a high voltage of
2.25 volts, unless otherwise noted. The voltage swing through this range should start
outside and pass through the range such that the rise or fall will be linear between
0.8-volt and 2.25 volts.
Table 3. Thermal Characteristics
Package
Symbol Parameter
PGA 68
θJ-A
Thermal Resistance Junction-to-ambient
θJ-C
Thermal Resistance Junction-to-case
θJ-A
Thermal Resistance Junction-to-ambient
CQFP 132
θJ-C
Thermal Resistance Junction-to-case
Value
28
2
27
3
Unit
°C/W
°C/W
°C/W
°C/W
8 TS68C429A
2120A–HIREL–08/02
 

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