Power-down control pin. Pull low to enable power-down mode. Connect to VDD if not
used.
Crystal connection. If using an external reference, this pin must be left unconnected.
Crystal connection or external reference frequency input. This pin has dual functions. It
can be connected either to an external crystal or an external reference clock.
Power supply for the entire chip.
Spread spectrum clock output.
Ground connection.
Rev. 2 | Page 2 of 12 | www.onsemi.com
ASM3P2762A
Pin Configuration (8-pin SOIC and TSSOP Packages)
XIN / CLKIN
1
XOUT
2
PD
3
NC
4
8
7
6
5
V
DD
NC
ModOUT
V
SS
ASM3P2762A
Pin Description
Pin#
1
2
3
4
5
6
7
8
Pin Name
XIN / CLKIN
XOUT
PD
NC
V
SS
ModOUT
NC
V
DD
Type
I
O
I
-
P
O
-
P
Description
Crystal connection or external reference frequency input. This pin has dual functions. It
can be connected either to an external crystal or an external reference clock.
Crystal connection. If using an external reference, this pin must be left unconnected.
Power-down control pin. Pull low to enable power-down mode. Connect to VDD if not
used.
No connect.
Ground connection.
Spread spectrum clock output.
No connect.
Power supply for the entire chip.
Modulation Profile
Specifications
Description
Frequency Range
Modulation Equation
Frequency Deviation
For 2.5V Supply
For 3.3V Supply
Specification
6MHz < CLKIN < 12MHz
6MHz < CLKIN < 13MHz
F
IN
/256
-1.25% (Typ) @10MHz
Rev. 2 | Page 3 of 12 | www.onsemi.com
ASM3P2762A
Absolute Maximum Ratings
Symbol
V
DD
, V
IN
T
STG
T
A
T
s
T
J
T
DV
Storage temperature
Operating temperature
Max. Soldering Temperature (10 sec)
Junction Temperature
Static Discharge Voltage
(As per JEDEC STD 22- A114-B)
Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect
device reliability.
Parameter
Rating
-0.5 to +4.6
-65 to +125
-40 to +85
260
150
2
Unit
V
°C
°C
°C
°C
KV
Voltage on any pin with respect to Ground
DC Electrical Characteristics for 2.5V Supply
(Test condition: All parameters are measured at room temperature (+25°C) unless otherwise stated.)
Symbol
V
IL
V
IH
I
IL
I
IH
I
XOL
I
XOH
V
OL
V
OH
I
DD
I
CC
V
DD
t
ON
Z
OUT
Input low voltage
Input high voltage
Input low current
Input high current
Parameter
Min
V
SS
-0.3
2.0
-
-
-
-
-
1.8
-
-
2.375
2
Typ
-
-
-
-
3
3
-
-
-
2
2.5
-
50
Max
0.8
V
DD
+0.3
-35
35
-
-
0.6
-
10
-
2.625
5
-
Unit
V
V
µA
µA
mA
mA
V
V
uA
mA
V
mS
Ω
XOUT output low current (@ 0.5V, V
DD
= 2.5V)
XOUT output high current (@ 1.8V, V
DD
= 2.5V)
Output low voltage (V
DD
= 2.5V, I
OL
= 8mA)
Output high voltage (V
DD
= 2.5V, I
OH
= 8mA)
Static supply current
Operating voltage
Power-up time (first locked cycle after power-up)
Output impedance
1
Dynamic supply current (2.5V, 10MHz and no load)
-
-
Notes: 1. PD pin is pulled low.
2. V
DD
and XIN / CLKIN input are stable, PD pin is made high from low.
AC Electrical Characteristics for 2.5V Supply
Symbol
CLKIN
ModOUT
f
d
t
LH
t
HL
1
1
Parameter
Input frequency
Output frequency
Input Frequency = 6MHz
Input Frequency = 12MHz
Output rise time (measured from 0.7V to 1.7V)
Frequency Deviation
Output fall time (measured from 1.7V to 0.7V)
Jitter (cycle-to-cycle)
Output duty cycle
Min
6
6
-
-
0.7
0.5
-
45
Typ
-
-
-1.75
- 0.95
1.1
0.8
-
50
Max
12
12
-
-
1.4
1.0
200
55
Unit
MHz
MHz
%
nS
nS
pS
%
t
JC
t
D
Note: 1.
t
LH
and t
HL
are measured into a capacitive load of 15pF.
Rev. 2 | Page 4 of 12 | www.onsemi.com
ASM3P2762A
DC Electrical Characteristics for 3.3V Supply
(Test condition: All parameters are measured at room temperature (+25°C) unless otherwise stated.)
Symbol
V
IL
V
IH
I
IL
I
IH
I
XOL
I
XOH
V
OL
V
OH
I
DD
I
CC
V
DD
t
ON
Z
OUT
Input low voltage
Input high voltage
Input low current
Input high current
Parameter
Min
V
SS
-0.3
2.0
-
-
-
-
-
2.5
-
-
2.7
2
Typ
-
-
-
-
3
3
-
-
-
3
3.3
-
45
Max
0.8
V
DD
+0.3
-35
35
-
-
0.4
-
10
-
3.6
5
-
Unit
V
V
µA
µA
mA
mA
V
V
uA
mA
V
mS
Ω
XOUT output low current (@ 0.4V, V
DD
= 3.3V)
XOUT output high current (@ 2.5V, V
DD
= 3.3V)
Output low voltage (V
DD
= 3.3V, I
OL
= 8mA)
Output high voltage (V
DD
= 3.3V, I
OH
= 8mA)
Static supply current
Operating voltage
Power-up time (first locked cycle after power-up)
Output impedance
1
Dynamic supply current (3.3V, 10MHz and no load)
-
-
Notes: 1. PD pin is pulled low.
2. V
DD
and XIN / CLKIN input are stable, PD pin is made high from low.
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