LM393

Part: LM393B, LM2903B, LM193, LM293, LM393 and LM2903 Dual Comparators — Texas Instruments

Type: Dual Voltage Comparator

Description: Dual open-collector comparator family with 2–36 V supply (B versions), 0.37 mV typical input offset, 3.5 nA typical input bias current, 1 μs response time and 200 μA supply current per comparator.

Operating Conditions:

• Supply voltage: 2–30 V (non-V devices), 2–32 V (V devices), 2–36 V (B versions)
• Operating temperature: suffix-dependent. LM393: 0 to 70 °C; LM393B: -40 to 85 °C; LM293/LM293A: -25 to 85 °C; LM2903 family and LM2903B: -40 to 125 °C; LM193: -55 to 125 °C
• Input voltage: 0 to (V+) − 2.0 V (non-B); -0.1 to (V+) − 2.0 V (B versions)

Absolute Maximum Ratings:

• Max supply voltage: 36 V (non-B versions), 38 V (B versions)
• Differential input voltage: ±36 V (non-B), ±38 V (B versions)
• Max output current: 20 mA (non-B), 25 mA (B versions)
• Max junction temperature: 150 °C
• Storage temperature: -65 to 150 °C

Key Specs:

• Input offset voltage (LM393B, VS = 5 to 36 V, 25 °C): ±0.37 mV typ, ±2.5 mV max; ±4 mV max over -40 to 85 °C
• Input bias current (LM393B): -3.5 nA typ, -25 nA max at 25 °C; -50 nA max over temperature
• Quiescent current (LM393B, all comparators): 400 μA typ / 600 μA max at VS = 5 V; 550 μA typ / 800 μA max at VS = 36 V
• Low-level output voltage (ISINK ≤ 4 mA, VID = -1 V): 110 mV typ, 400 mV max at 25 °C
• Output sink current (VOL = 1.5 V, VS = 5 V): 6 mA min, 21 mA typ
• Output leakage (VO = 36 V): 0.3 nA typ, 50 nA max
• Large-signal gain (VS = 15 V, RL ≥ 15 kΩ): 50 V/mV min, 200 V/mV typ
• Response time (LM393B/LM2903B): 300 ns typ with TTL input; 1000 ns typ with 5 mV overdrive and 100 mV step

Features:

• B-version drop-in replacement for LM293, LM393 and LM2903 (A and V grades)
• Maximum rating up to 38 V
• 2 kV HBM ESD rating
• Common-mode input range includes ground
• Differential input range equal to maximum rated supply voltage
• Low output saturation voltage
• Output compatible with TTL, MOS and CMOS
• Quiescent current independent of supply voltage

Applications:

• Vacuum robot
• Single phase UPS
• Server PSU
• Cordless power tool
• Wireless infrastructure
• Appliances
• Building automation
• Factory automation and control
• Motor drives
• Infotainment and cluster

Package:

• SOIC (8): 4.90 mm × 3.91 mm
• VSSOP (8): 3.00 mm × 3.00 mm
• PDIP (8): 9.81 mm × 6.35 mm
• SO (8): 6.20 mm × 5.30 mm
• TSSOP (8): 3.00 mm × 4.40 mm
• SOT-23 (8): 2.90 mm × 1.60 mm
• WSON (8): 2.00 mm × 2.00 mm

• NEW LM393B and LM2903B
• Improved specifications of B-version
• -Maximum rating: up to 38V
• -ESD rating (HBM): 2kV
• -Low input offset: 0.37mV
• -Low input bias current: 3.5nA
• -Low supply-current: 200μA per comparator
• -Faster response time of 1μsec
• -Extended temperature range for LM393B
• -Available in tiny 2 x 2mm WSON package
• B-version is drop-in replacement for LM293, LM393 and LM2903, A and V versions
• Common-mode input voltage range includes ground
• Differential input voltage range equal to maximumrated supply voltage: ±38 V
• Low output saturation voltage
• Output compatible with TTL, MOS, and CMOS

• Vacuum robot
• Single phase UPS
• Server PSU
• Cordless power tool
• Wireless infrastructure
• Applicances
• Building automation
• Factory automation & control
• Motor drives
• Infotainment & cluster

Figure 4-1. D, DGK, JG, P, PS, DDF or PW Package 8-Pin SOIC, VSSOP, PDIP, SO, or TSSOP Top View

Connect thermal pad directly to GND pin.

Figure 4-2. DSG Package 8-Pin WSON With Exposed Pad Top View

Table 4-1. Pin Functions

VS = 5V, VCM = (V-) ; TA = 25°C (unless otherwise noted).

over operating free-air temperature range (unless otherwise noted) (1)

• (2) All voltage values, except differential voltages, are with respect to network ground.
• (3) Differential voltages are at IN+ with respect to IN-.
• (4) Short circuits from outputs to V CC can cause excessive heating and eventual destruction.
• (5) Input current flows thorough parasitic diode to ground and turns on parasitic transistors that increases I CC and can cause the output to be incorrect. Normal operation resumes when input current is removed.

Over operating free-air temperature range (unless otherwise noted)

The device is typically used to compare a single signal to a reference or two signals against each other. Many users take advantage of the open drain output to drive the comparison logic output to a logic voltage level to an MCU or logic device. The wide supply range and high voltage capability makes this comaprator an excellent choice for level shifting to a higher or lower voltage.