TLC339IPW Datasheet, PDF (7/30 Pages) Texas Instruments – LinCOMS MICROPOWER QUAD COMPARATORS

TLC139, TLC339, TLC339Q
LinCMOS MICROPOWER QUAD COMPARATORS
switching characteristics, V_DD = 5 V, T_A = 25°C (see Figure 3)
PARAMETER
TEST CONDITIONS
tPLH Propagation delay time, low-to-high output
tPHL Propagation delay time, high-to-low level output
tTHL Transition time, high-to-low level output
Overdrive = 2 mV
f = 10 kHz,
CL = 15 pF
Overdrive = 5 mV
Overdrive = 10 mV
Overdrive = 20 mV
Overdrive = 40 mV
VI = 1.4 V step at IN+
Overdrive = 2 mV
f = 10 kHz,
CL = 15 pF
Overdrive = 5 mV
Overdrive = 10 mV
Overdrive = 20 mV
Overdrive = 40 mV
VI = 1.4 V step at IN+
f = 10 kHz,
CL = 15pF
Overdrive = 50 mV
TLC139M, TLC339C
TLC339I, TLC339M
TLC339Q
MIN TYP MAX
4.5
2.5
1.7
1.2
1.0
1.1
3.6
2.1
1.3
0.85
0.55
0.10
UNIT
µs
µs
20
ns
PARAMETER MEASUREMENT INFORMATION
The TLC139 and TLC339 contain a digital output stage that, if held in the linear region of the transfer curve, can cause
damage to the device. Conventional operational amplifier/comparator testing incorporates the use of a servo-loop
that is designed to force the device output to a level within this linear region. Since the servo-loop method of testing
cannot be used, the following alternatives for testing parameters such as input offset voltage, common-mode
rejection, etc., are suggested.
To verify that the input offset voltage falls within the limits specified, the limit value is applied to the input as shown
in Figure 1(a). With the noninverting input positive with respect to the inverting input, the output should be high. With
the input polarity reversed, the output should be low.
A similar test can be made to verify the input offset voltage at the common-mode extremes. The supply voltages can
be slewed as shown in Figure 1(b) for the V_ICR test, rather than changing the input voltages, to provide greater
accuracy.
5V
1V
5.1 kΩ
5.1 kΩ
Applied VIO
Limit
Applied VIO
VO
Limit
VO
−4 V
(a) VIO WITH VIC = 0 V
(b) VIO WITH VIC = 4 V
Figure 1. Method for Verifying That Input Offset Voltage Is Within Specified Limits
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