Electrical characteristics
Table 3.
LM139, LM239, LM339
Electrical characteristics at V
CC+
= +5 V, V
CC-
= GND, T
amb
= +25° C
(unless otherwise specified) (continued)
Parameter
LM139A - LM239A
LM339A
Min.
Large signal response time
R
L
= 5.1 kΩ connected to V
CC+
, e
l
= TTL,
V
(ref)
= +1.4 V
Typ.
Max.
LM139 - LM239
LM339
Min
Typ.
Max.
Unit
Symbol
trel
300
300
ns
1. At output switch point, V
o
≈
1.4 V, V
CC+
from 5 V to 30 V, and over the full common-mode range (0 V to V
CC+
-1.5 V).
2. The direction of the input current is out of the IC due to the PNP input stage. This current is essentially constant,
independent of the state of the output, so no loading charge exists on the reference of input lines.
3. The input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3 V.
The upper end of the common-mode voltage range is V
CC+
-1.5 V, but either or both inputs can go to +30 V without
damage.
4. Positive excursions of input voltage may exceed the power supply level. As long as the other voltage remains within the
common-mode range, the comparator will provide a proper output state. The low input voltage state must not be less than
-0.3 V (or 0.3 V below the negative power supply, if used).
5. The response time specified is for a 100 mV input step with 5 mV overdrive. For larger overdrive signals, 300 ns can be
obtained.
6/19
Doc ID 2159 Rev 3
STMICROELECTRONICS [ STMICROELECTRONICS ]
