MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Voltage Controlled
Multivibrator
The MC1658 is a voltage–controlled multivibrator which provides
appropriate level shifting to produce an output compatible with MECL III
and MECL 10,000 logic levels. Frequency control is accomplished
through the use of voltage–variable current sources which control the
slew rate of a single external capacitor.
The bias filter may be used to help eliminate ripple on the output
voltage levels at high frequencies and the input filter may be used to
decouple noise from the analog input signal.
MC1658
VOLTAGE
CONTROLLED
MULTIVIBRATOR
Pinout: 16–Lead Package
(Top View)
NC
16
NC
15
CX2
14
INF
13
BIAS
12
CX1
11
NC
10
NC
9
L SUFFIX
16–LEAD CERAMIC PACKAGE
CASE 620–10
Not Recommended for New Designs
1
2
3
NC
4
Q
5
VCC2
6
Q
7
NC
8
VEE
P SUFFIX
16–LEAD PLASTIC PACKAGE
CASE 648–08
VCC1 VCX
LOGIC DIAGRAM
CX1 11
CX2 14
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B–05
VCX 2
Q
Bias Filter
Q
Input Filter
4
FN SUFFIX
20–LEAD PLCC PACKAGE
CASE 775–02
VCC1 = Pin 1
VCC2 = Pin 5
VEE = Pin 8
6
Pin Conversion Table
16 PIN DIP
20 PIN PLCC
1
2
2
3
3
4
4
5
5
7
6
8
7
9
8
10
9
12
10
13
11
14
12
15
13
17
14
18
15
19
16
20
1/97
©
Motorola, Inc. 1997
1
REV 1
MOTOROLA [ MOTOROLA, INC ]
