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
NPC [ NIPPON PRECISION CIRCUITS INC ]
