5042 series
AC Characteristics
Clock output characteristics (5042A1A to A6A, Q pin)
V
= 2.25V to 3.63V, V = 0V, Ta = −40°C to +85°C, C = 15pF unless otherwise noted.
LOUT
DD
SS
Rating
Parameter
Symbol
Conditions
Unit
MIN
–
TYP
–
MAX
4.5
Output rise time
Output fall time
t
Measurement circuit 1, 0.1V → 0.9V
DD
ns
ns
r
DD
DD
t
Measurement circuit 1, 0.9V → 0.1V
DD
–
–
4.5
f
Measurement circuit 1, threshold voltage 0.5V
Duty = Tw/T × 100
,
*1
DD
Output duty cycle
Duty
45
–
50
–
55
%
Output disable delay time
t
Measurement circuit 2, INHN = HIGH → LOW
100
ns
OD
*1. This parameter is measured using the NPC’s standard crystal. Note that the values will vary with the crystal characteristics used or mounting
conditions.
Clock output characteristics (5042B1A to B6A, Q pin)
V
= 1.60V to 2.25V, V = 0V, Ta = −40°C to +85°C, C = 15pF unless otherwise noted.
LOUT
DD
SS
*1
Rating
Parameter
Symbol
Conditions
Unit
MIN
–
TYP
–
MAX
Output rise time
Output fall time
t
Measurement circuit 1, 0.1V → 0.9V
DD
5
5
ns
ns
r
DD
DD
t
Measurement circuit 1, 0.9V → 0.1V
DD
–
–
f
Measurement circuit 1, threshold voltage 0.5V
Duty = Tw/T × 100
,
*2
DD
Output duty cycle
Duty
(45)
–
(50)
–
(55)
100
%
Output disable delay time
t
Measurement circuit 2, INHN = HIGH → LOW
ns
OD
*1. Values in parentheses ( ) are provisional only.
*2. This parameter is measured using the NPC’s standard crystal. Note that the values will vary with the crystal characteristics used or mounting
conditions.
Q
0.9VDD
0.9VDD
DUTY measurement
voltage (0.5VDD)
TW
0.1VDD
0.1VDD
T
DUTY= TW/ T 100 (%)
tr
tf
Figure 1. Output switching waveform
0.5VDD
0.5VDD
INHN
tr = tf = 2ns
*1
OSC
tOD
t
(10% to 90%)
Q
0.1V
0.1V
0.5VDD
Low
Normal output
Hi-Z
Normal output
*1. t
is oscillator start-up time. It is interval of time until the oscillation is stabilized and varies with the crystal used.
Please contact us for further details.
OSC
Figure 2. Output disable timing chart
SEIKO NPC CORPORATION—7