SM5021 series
TTL Output Version
5V operation: BA, BB, BC, BD, LD series
V
DD
= 4.5 to 5.5V, V
SS
= 0V, Ta =
−
20 to + 80°C unless otherwise noted.
Rating
Parameter
Output rise time
Output fall time
Output duty cycle
*1
Output disable delay time
Output enable delay time
Symbol
t
r2
t
f2
Duty
t
PLZ
t
PZL
Condition
min
Measurement cct 6, load cct 2, 0.4V to 2.4V, C
L
= 15pF
Measurement cct 6, load cct 2, 2.4V to 0.4V, C
L
= 15pF
Measurement cct 6, load cct 2, V
DD
= 5V, Ta = 25°C, C
L
= 15pF,
f
≤
70MHz
Measurement cct 6, load cct 2, V
DD
= 5V, Ta = 25°C, C
L
= 15pF
–
–
45
–
–
typ
2.5
2.5
–
–
–
max
7
7
55
100
100
ns
ns
%
ns
ns
Unit
*1. The duty cycle characteristic is checked the sample chips of each production lot.
Current consumption and Output waveform with NPC’s standard crystal
f [MHz]
R [Ω]
18.62
20.53
22.17
22.20
25.42
L [mH]
16.24
11.34
7.40
5.05
4.18
Ca [fF]
1.733
1.396
1.370
1.388
1.254
Cb [pF]
5.337
3.989
4.105
4.226
5.170
Cb
30
40
50
60
L
Ca
R
70
FUNCTIONAL DESCRIPTION
Standby Function
When INHN goes LOW, the oscillator output on Q goes high impedance.
INHN
HIGH (or open)
LOW
Q
f
O
High impedance
Oscillator
Normal operation
Normal operation
SEIKO NPC CORPORATION —8
NPC [ NIPPON PRECISION CIRCUITS INC ]
