
2
SP8685
ELECTRICAL CHARACTERISTICS
Unless otherwise stated, the Electrical Characteristics are guaranteed over specified supply, frequency and temperature range
Supply voltage, VCC = 0V, VEE = 252V 6 025V
Temperature, T
AMB = 255°C to 1125°C (A Grade), 230°C to 170°C (B Grade)
Characteristic
Maximum frequency (sinewave input)
Minimum frequency (sinewave input)
Power supply current
Output high voltage
Output low voltage
PE input high voltage
PE input low voltage
Clock to output delay
Set-up time
Release time
Symbol
fMAX
fMIN
IEE
VOH
VOL
VINH
VINL
tp
ts
tr
500
2
087
2
18
2
093
2
Min.
Max.
50
70
2
07
2
15
2
162
6
Value
Units
Input = 400-800mV p-p
VEE = 252V
VEE = 252V (25°C)
Conditions
Notes
MHz
mA
V
ns
5
NOTES
1. The temperature coefficients of VOH = 1163mV/°C, VOL = 1094mV/°C and of VIN = 1122mV/°C.
2. The test configuration for dynamic testing is shown in Fig.6.
3. The set-up time ts is defined as the minimum time that can elapse between L→H transition of control input and the next L→H clock pulse transition
to ensure that the 410 mode is obtained.
4. The release time tr is defined as the minimum time that can elapse between H→L transition of control input and the next L→H clock pulse transition
to ensure that the 411 mode is obtained.
5. Guaranteed but not tested.
Fig. 3 Typical input characteristic of SP8685A
L
H
L
H
PE1
L
H
TRUTH TABLE FOR
CONTROL INPUTS
11
10
PE2
Division ratio
Fig. 4 Timing diagram
1600
1400
1200
1000
800
600
400
200
0
100
200
300
400
500
INPUT FREQUENCY (MHz)
INPUT
AMPLITUDE
(mV
p-p)
* Tested as specified
in table of Electrical
Characteristics
GUARANTEED *
OPERATING
WINDOW
TAMB = 255°C TO 1125°C
6
tr
ts
5
CLOCK INPUT
PE INPUT
OUTPUT