LM393

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

Type: Dual Comparators

Description: Dual comparators with improved specifications, featuring up to 38V maximum rating, 0.37mV low input offset, 3.5nA low input bias current, and 1μsec faster response time.

Operating Conditions:

• Supply voltage: 2 to 36 V ("B" version devices)
• Operating temperature: -40 to 85 °C (LM393B), -40 to 125 °C (LM2903B)
• Input voltage: -0.1 to (V+) - 2.0 V ("B" version devices)

Absolute Maximum Ratings:

• Max supply voltage: 38 V (B Versions Only)
• Max continuous current: 25 mA (Output current, B Versions Only)
• Max junction/storage temperature: 150 °C

Key Specs:

• Input offset voltage (VIO): ±0.37 mV (typ), 4 mV (max) over -40°C to +85°C (LM393B) / +125°C (LM2903B)
• Input bias current (IB): -3.5 nA (typ), -50 nA (max) over -40°C to +85°C (LM393B) / +125°C (LM2903B)
• Quiescent current (IQ): 400 μA (typ) at VS=5V, 800 μA (max) at VS=36V over temp (all comparators)
• Propagation delay time (t response): 1000 ns (typ) for small scale input signal (LM393B and LM2903B)
• Large signal differential voltage amplification (AVD): 50 V/mV (min), 200 V/mV (typ) at VS=15V
• Low level output voltage (VOL): 110 mV (typ), 550 mV (max) over temp, at I SINK ≤ 4mA
• ESD (HBM): ±2000 V
• Low level output current (IOL): 6 mA (min), 21 mA (typ) at VOL=1.5V, VS=5V

Features:

• Improved specifications of B-version (up to 38V, 2kV ESD, 0.37mV offset, 3.5nA bias, 200μA supply, 1μsec response)
• 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 maximum rated supply voltage: ±38 V
• Low output saturation voltage
• Output compatible with TTL, MOS, and CMOS

Applications:

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

Package:

• SOIC (8)
• VSSOP (8)
• PDIP (8)
• SO (8)
• TSSOP (8)
• SOT-23 (8)
• WSON (8)

• 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

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.