Datasheet - TS391, TS391A - Low-power single voltage comparator
Document overview
- Manufacturer or author: STMICROELECTRONICS
- PDF pages: 16
Technical content
Datasheet sections
- 1 Schematic diagram
- 2 Package pin connections
- 3 Absolute maximum ratings and operating conditions
- 4 Electrical characteristics
- 5 Electrical characteristic curves
- 6 Package information
- 6.1 SOT23-5 package information
- 6.2 DFN8 2 x 2 package information
- 7 Ordering information
Features
- Wide single supply voltage range or dual supplies 2 V to 36 V or ± 1 V to ± 18 V
- Very low supply current (0.2 mA) independent of supply voltage (1 mW / comparator at 5 V)
- Low input bias current: 25 nA typ.
- Low input offset current: ± 5 nA typ.
- Low input offset voltage: ± 2 mV max. for TS391A
- Input common-mode voltage range includes ground
- Low output saturation voltage: 250 mV typ. (Io = 4 mA)
- Differential input voltage range equal to the supply voltage
- TTL, DTL, ECL, CMOS compatible outputs
Description
These devices consist of a low-power voltage comparator designed specifically to operate from a single supply over a wide range of voltages. Operation from split power supplies is also possible. These comparators also have a unique characteristic where the input common-mode voltage range includes ground, even though operated from a single power supply voltage. SOT23-5 DFN8 2x2 Maturity status link TS391, TS391A Low-power single voltage comparator TS391, TS391A Datasheet DS1551 - Rev 11 - September 2023 For further information contact your local STMicroelectronics sales office.
1 Schematic diagram
Figure 1. Schematic diagram
2 Package pin connections
Figure 2. Pin connections (top view)
5 VCC+IN-
3 Absolute maximum ratings and operating conditions
Table 1. Absolute maximum ratings (AMR)
- Output voltage can be set up to 36 V even if the VCC is lower.
- Short-circuits from the output to VCC + can cause excessive heating and potential destruction. The maximum output current
is approximately 20 mA independent of the magnitude of VCC +.
- Short-circuits can cause excessive heating. These values are typical.
- Human body model: a 100 pF capacitor is charged to the specified voltage, then discharged through a 1.5 kΩ resistor
between two pins of the device. This is done for all couples of connected pin combinations while the other pins are floating.
- Machine model: a 200 pF capacitor is charged to the specified voltage, then discharged directly between two pins of the
while the other pins are floating.
- Charged device model: all pins and package are charged together to the specified voltage and then discharged directly to
ground through only one pin. This is done for all pins. Table 2. Operating conditions
- 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 (VCC +) – 1.5 V, but either or both inputs can go to 30 V without damage. second pin is within 0 V to 30 V.
4 Electrical characteristics
Table 3. VCC + = 5 V, VCC - = 0 V, Tamb = 25 °C (unless otherwise specified)
- At the output switch point, Vo ≈ 1.4 V, RS = 0 Ω with (VCC +) from 5 V to 30 V, and over the full input common-mode range (0 V to (VCC +) –
- 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 there is no load charge on the reference of input lines.
- Positive excursions of the input voltage may exceed the power supply level. As long as the other voltage remains within the common-mode
- The response time specified is for a 100 mV input step with 5 mV overdrive. For larger overdrive signals, 300 ns can be obtained.
Electrical characteristics
5 Electrical characteristic curves
Figure 3. Supply current vs. supply voltage Figure 4. Response time for various input overdrives - Figure 5. Input current vs. supply voltage Figure 6. Response time for various input overdrives - Figure 7. Output saturation voltage vs. output current
6 Package information
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark. TS391, TS391A
Package information
6.1 SOT23-5 package information
Figure 8. SOT23-5 package outline Table 4. SOT23-5 mechanical data
6.2 DFN8 2 x 2 package information
Figure 9. DFN8 2 x 2 package outline Table 5. DFN8 2 x 2 mechanical data
Figure 10. DFN8 2 x 2 recommended footprint
7 Ordering information
Table 6. Order codes
- Qualification and characterization according to AEC Q100 and Q003 or equivalent, advanced screening according to AEC
Ordering information
DS1551 - Rev 11 page 11/16
Revision history
Table 7. Document revision history 22-Sep-2004 1 Initial release. 06-Jan-2006 2 PPAP reference inserted in the document. Added values for Rthja, Rthjc and ESD in Table 1: Absolute maximum ratings (AMR). Added footnote for automotive grade order code in order codes table. Updated note 1 in Table 6: Order codes. Added TS391R pinout on page 1. Modified VCC range in Table 2: Operating conditions. Added TS391RILT order code in Table 6: Order codes. "plastic micropackage" from DFN8 2x2 silhouette. Standardized name of the DFN8 package to: "DFN8 2x2" throughout datasheet. Table 1: "Absolute maximum ratings (AMR)": added parameter Vo. Table 4: "SOT23-5 mechanical data": updated “K” parameter. Table 5: "DFN8 2 x 2 mechanical data": updated “L” parameter. Added new part number TS391A. Features: updated low input offset voltage for TS391A. Table 3: added Vio and Iib information for TS391A. Table 6: "Order codes": added new order code TS391AILT. 06-Mar-2020 9 Table 6 added new order code TS391RIYLT. 14-Jan-2021 10 Updated Figure 3. Pin connections (top view). 04-Sep-2023 11 Updated VOL and IOH relation of parameters in Table 3.
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