Q-Tech QT50 - Manual (Page 4)

4
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
DUAL IN-LINE PACKAGES
CRYSTAL CLOCK OSCILLATORS
-5.2 to -4.5Vdc & 1.8 to 15Vdc - 0.01Hz to 200MHz
Dual In-line Packages (Revision G, August 2011 ) (ECO# 10297)
Q-TECH
CORPORATION
Vdd
GND
0.1xVdd
0.9xVdd
VOH
VOL
Tr Tf
TH
T
0.5xVdd
SYMMETRY = x 100%
TH
T
Ts
Start-up box
Oscilloscope
DUT
Variable Ramp
54616B Agilent
TYPICAL SET-UP FOR START-UP TIME
14
7
8
10 11
QT6T3
+5VDC
GND
OUTPUT
0.01uF
12pF(*)
10k
D1
D2
D3
D4
Cext
D1-D4: 1N4148 or equivalent
TYPICAL TEST CIRCUIT FOR QT6T3 (6TTL)
430
(*) CL includes scope probe capacitance
Output Waveform (Typical) Startup Time
Frequency vs. Temperature Curve
Test Circuit
-
-
Output
Ground
0.1µF
15pF
Tristate Function
Power
supply
10k
mA
Vdc
+
+
+
(*)
or
0.01µF
(*) CL includes probe and jig capacitance
Typical test circuit for CMOS logic
Vdd Out
GND E/D
POWER
SUPPLY
+
-
mA
0.1µF
Vdc
-
Vdd OUT
OUT
GND
Typical test circuit for TTL logic.
0.01µF
Rs
(*) CL inclides the loading effect of the oscilloscope probe.
E/D
CL
+
+
-
RL
LOAD
6 TTL
10 TTL
CL(*)
12pF
20pF
RL
430Ω
270Ω
RS
10kΩ
6kΩ
or
Vdd
POWER
SUPPLY
+
-
mA
Vdc
+
-
GND OUT
OUT
Vcc
Typical test circuit for ECL logic.
0.1µF
or
0.01µF
50Ω
-2Vdc
-4.5V
or
-5.2V
FREQUENCY VERSUS TEMPERATURE QT6L9M-64.5MHz
-40
-30
-20
-10
0
10
20
30
40
-55 -45 -35 -25 -15 -5 5 15 25 35 45 55 65 75 85 95 105 115 125
Temperature (°C)
1_5 2_5 3_5
Frequency Stability (PPM)
The Tristate function on pin 1 has a built-in pull-up resistor typical 50kΩ, so it can
be left floating or tied to Vdd without deteriorating the electrical performance.