SM5021 series
Crystal Oscillator Module ICs
OVERVIEW
The SM5021 series are crystal oscillator module ICs fabricated in NPC’s Molybdenum-gate CMOS, that
incorporate high-frequency, low current consumption oscillator and output buffer circuits. Highly accurate
thin-film feedback resistors and high-frequency capacitors are built-in, eliminating the need for external com-
ponents to make a stable 3rd overtone oscillator.
FEATURES
I
I
I
I
I
3rd overtone oscillation
Oscillator capacitors C
G
, C
D
built-in
Inverter amplifier feedback resistor built-in
(A
×
, B
×
series)
TTL input level
Output drive capability
• 4mA (V
DD
= 2.7V)
• 8mA (V
DD
= 4.5V)
I
I
I
I
I
Output three-state function
Operating supply voltage range
• 2.7 to 5.5V (A
×
, K
×
series)
• 4.5 to 5.5V (B
×
, L
×
series)
Oscillator frequency output
6-pin SOT (SM5021
××
H)
Chip form (CF5021
××
)
SERIES CONFIGURATION
Operating supply
voltage range [V]
Chip
SM5021AAH
SM5021ABH
SM5021ACH
SM5021ADH
SM5021AEH
SM5021BAH
SM5021BBH
SM5021BCH
SM5021BDH
SM5021KDH
SM5021KEH
SM5021LDH
2.7 to 5.5
2.7 to 3.6
4.5 to 5.5
2.7 to 5.5
2.7 to 3.6
4.5 to 5.5
22 to 50
*3
50 to 70
*3
×
4.5 to 5.5
4.5 to 5.5
×
2.7 to 3.6
×
2.7 to 5.5
2.7 to 5.5
4.5 to 5.5
SOT
4.5 to 5.5
Recommended
operating frequency
range
*2
[MHz]
3V
5V
operation operation
×
22 to 30
30 to 40
40 to 50
50 to 70
22 to 30
30 to 43
43 to 55
55 to 70
×
22 to 30
30 to 43
43 to 55
55 to 70
22 to 70
*3
×
22 to 70
*3
8
8
15
12
15
8
15
12
8
15
Built-in
capacitance
[pF]
C
G
C
D
1
1
2
3
4
1
1
2
3
3
4
3
6.0
3.3
3.9
2.7
2.7
6.0
3.3
3.9
2.7
–
–
fo
fo
CMOS
TTL
High impedance
High impedance
fo
TTL
High impedance
fo
CMOS
High impedance
Version
*1
gm
ratio
Rf
[kΩ]
Output
frequency
Output
level
Standby output
state
*1. Chip form devices have designation CF5021
××
.
*2. The recommended operating frequency is a yardstick value derived from the crystal used for NPC characteristics authentication. However, the oscilla-
tor frequency band is not guaranteed. Specifically, the characteristics can vary greatly due to crystal characteristics and mounting conditions, so the
oscillation characteristics of components must be carefully evaluated.
*3. The 3rd overtone frequency range using an external resistor to set the cutoff frequency.
ORDERING INFORMATION
Device
SM5021
××
H
CF5021
××
–2
Package
SOT23-6
Chip form
SEIKO NPC CORPORATION —1
NPC [ NIPPON PRECISION CIRCUITS INC ]
