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
ASM3P2769A
Pin Configuration (8-pin SOIC and TSSOP Packages)
XIN / CLKIN
1
XOUT
2
8
7
6
5
VDD
NC
ModOUT
VSS
ASM3P2769A
PD
3
NC
4
Pin Description
Pin#
1
2
3
4
5
6
7
8
Pin Name
XIN / CLKIN
XOUT
PD
NC
VSS
ModOUT
NC
VDD
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
Specification
Description
For 2.5V Supply
Frequency Range
Modulation Equation
Frequency Deviation
For 3.3V Supply
Specification
6MHz < CLKIN < 12MHz
6MHz < CLKIN < 13MHz
F
IN
/256
±1% @ 10MHz
Rev. 2 | Page 3 of 12 | www.onsemi.com
ASM3P2769A
Absolute Maximum Ratings
Symbol
VDD, 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 STD22- 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
VDD
t
ON
Z
OUT
Input low voltage
Input high voltage
Input low current
Input high current
Parameter
Min
VSS-0.3
2.0
-
-
-
-
-
1.8
-
-
2.375
2
Typ
-
-
-
-
3
3
-
-
-
2.5
2.5
-
50
Max
0.8
VDD+0.3
-35
35
-
-
0.6
-
10
-
2.625
5
-
Unit
V
V
µA
µA
mA
mA
V
V
µA
mA
V
mS
Ω
XOUT output low current (@ 0.5V, VDD = 2.5V)
XOUT output high current (@ 1.8V, VDD = 2.5V)
Output low voltage (VDD = 2.5 V, I
OL
= 8mA)
Output high voltage (VDD = 2.5 V, 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 with no load)
-
-
Notes: 1. XIN / CLKIN pin and PD pin are 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
Frequency Deviation
Input Frequency = 12MHz
Output rise time (measured at 0.7V to 1.7V)
Output fall time (measured at 1.7V to 0.7V)
Jitter (cycle-to-cycle)
Output duty cycle
Min
6
6
-
-
0.6
0.4
-
45
Typ
-
-
±1.55
±0.8
1.2
0.9
-
50
Max
12
12
-
Unit
MHz
MHz
%
-
1.5
1.1
200
55
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
ASM3P2769A
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
VSS-0.3
2.0
-
-
-
-
-
2.5
-
-
2.7
1
Typ
-
-
-
-
3
3
-
-
-
3.5
3.3
-
45
Max
0.8
VDD+0.3
-35
35
-
-
0.4
-
10
-
3.6
5
-
Unit
V
V
µA
µA
mA
mA
V
V
µA
mA
V
mS
Ω
XOUT output low current (@ 0.4V, VDD = 3.3V)
XOUT output high current (@ 2.5V, VDD = 3.3V)
Output low voltage (VDD = 3.3 V, I
OL
= 8mA)
Output high voltage (VDD = 3.3 V, 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 with no load)
-
-
Notes: 1. XIN / CLKIN pin and PD pin are pulled low.
2. V
DD
and XIN / CLKIN input are stable, PD pin is made high from low.
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