
LOGIC DIAGRAM
VCC1= PIN 1
VCC2= PIN 16
VEE= PIN 8
5
7
10
13
15
3
2
Q
Q
6
4
VEE
VCC
CEXT
E pos
EXTERNAL PULSE
WIDTH CONTROL
ENEG
TRIGGER
INPUT
HI–SPEED
INPUT
TRUTH TABLE
EPos ENeg
L
L
H
H
INPUT
OUTPUT
L
H
L
H
Triggers on both positive & negative input slopes
Triggers on positive input slope
Triggers on negative input slope
Trigger is disabled
REXT
SEMICONDUCTOR TECHNICAL DATA
3–172
REV 5
Motorola, Inc. 1996
3/93
The MC10198 is a retriggerable monostable multivibrator. Two enable inputs
permit triggering on any combination of positive or negative edges as shown in
the accompanying table. The trigger input is buffered by Schmitt triggers
making it insensitive to input rise and fall times.
The pulse width is controlled by an external capacitor and resistor. The
resistor sets a current which is the linear discharge rate of the capacitor. Also,
the pulse width can be controlled by an external current source or voltage (see
applications information).
For high–speed response with minimum delay, a hi–speed input is also
provided. This input bypasses the internal Schmitt triggers and the output
responds within 2 nanoseconds typically.
Output logic and threshold levels are standard MECL 10,000. Test
conditions are per Table 2. Each “Precondition” referred to in Table 2 is per the
sequence of Table 1.
PD = 415 mW typ/pkg (No Load)
tpd = 4.0 ns typ Trigger Inpt to Q
2.0 ns typ Hi–Speed Input to Q
Min Timing Pulse Width
Max Timing Pulse Width
Min Trigger Pulse Width
Min Hi–Speed
Trigger Pulse Width
Enable Setup Time
Enable Hold Time
1 CExt = 0 (Pin 4 open), RExt = 0
(Pin 6 to VEE)
2 CExt = 10
μ
F, RExt = 2.7 k
PWQmin
PWQmax
PWT
PWHS
10 ns typ1
>10 ms typ2
2.0 ns typ
3.0 ns typ
tset
thold
1.0 ns typ
1.0 ns typ
DIP
PIN ASSIGNMENT
VCC1
Q
Q
CEXT
EPOS
REXT
EXT.PULSE
WIDTH CONTROL
VEE
VCC2
HIGH–SPEED
INPUT
N/C
TRIGGER INPUT
N/C
N/C
ENEG
N/C
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
Pin assignment is for Dual–in–Line Package.
For PLCC pin assignment, see the Pin Conversion
Tables on page 6–11 of the Motorola MECL Data
Book (DL122/D).
L SUFFIX
CERAMIC PACKAGE
CASE 620–10
P SUFFIX
PLASTIC PACKAGE
CASE 648–08
FN SUFFIX
PLCC
CASE 775–02