SM5021 series
TTL Output Version
5V operation: BA, BB, BC, BD, LD series
V
= 4.5 to 5.5V, V = 0V, Ta = − 20 to + 80°C unless otherwise noted.
SS
DD
Rating
typ
Parameter
Symbol
Condition
Unit
min
–
max
Output rise time
Output fall time
t
Measurement cct 6, load cct 2, 0.4V to 2.4V, C = 15pF
L
2.5
7
7
ns
ns
r2
t
Measurement cct 6, load cct 2, 2.4V to 0.4V, C = 15pF
L
–
2.5
f2
Measurement cct 6, load cct 2, V = 5V, Ta = 25°C, C = 15pF,
*1
DD
L
Output duty cycle
Duty
45
–
55
%
f ≤ 70MHz
Output disable delay time
Output enable delay time
t
–
–
–
–
100
100
ns
ns
PLZ
Measurement cct 6, load cct 2, V = 5V, Ta = 25°C, C = 15pF
DD
L
t
PZL
*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]
30
R [Ω]
18.62
20.53
22.17
22.20
25.42
L [mH]
16.24
11.34
7.40
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
Ca
40
50
60
5.05
L
R
70
4.18
FUNCTIONAL DESCRIPTION
Standby Function
When INHN goes LOW, the oscillator output on Q goes high impedance.
INHN
HIGH (or open)
LOW
Q
Oscillator
f
Normal operation
Normal operation
O
High impedance
SEIKO NPC CORPORATION —8
NPC [ NIPPON PRECISION CIRCUITS INC ]
