Thông số kỹ thuật
| thuộc tính | Giá trị |
| Supplier | Texas Instruments |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Type | Differential |
| Number of Elements | 2 |
| Output Type | CMOS, MOS, Open-Collector, TTL |
| Voltage - Supply, Single/Dual (±) | 2V ~ 36V, ±1V ~ 18V |
| Voltage - Input Offset (Max) | 5mV @ 30V |
| Current - Input Bias(Max) | 0.25µA @ 5V |
| Current - Output (Typ) | 20mA |
| Current - Quiescent (Max) | 2.5mA |
| Operating Temperature | -55°C ~ 125°C |
| Mounting Type | Surface Mount |
Tổng quan
Description
LM293MDREP is a dual voltage comparator IC (LM293 family) in a single package. It provides two independent comparators with open-collector outputs, so each output needs an external pull‑up resistor to a positive supply. The input common‑mode range typically includes ground and goes toward the supply rail, making it suitable for low- to mid-Voltage sensing. The device is a low‑power, fast-switching part used for threshold detection, level sensing, zero‑cross detection, window detectors, and simple control circuits. The MDREP suffix refers to the specific package and manufacturing option for this part (e.g., package type, temp range, and date/lot code from the supplier). When using LM293MDREP, ensure you provide proper pull‑ups, stay within the common‑mode range, and respect the output sink current limits.
Equivalent
LM293MDREP is essentially the same as the LM393 dual comparator. Equivalents include:
- LM393 (direct, pin-compatible)
- LM2903 (dual open-collector comparator; another common cross-ref)
Some vendors also use LM393N or LM2903N designations in similar 8-pin packages. Always verify the exact pinout and specs in the datasheet.
- LM393 (direct, pin-compatible)
- LM2903 (dual open-collector comparator; another common cross-ref)
Some vendors also use LM393N or LM2903N designations in similar 8-pin packages. Always verify the exact pinout and specs in the datasheet.
Features
LM293MDREP features (dual comparator, open-collector outputs):
- Dual independent voltage comparators
- Open-collector outputs (sink current only; use pull-up resistors)
- Wide supply range and single-supply operation (typical 2–36 V)
- Input common-mode range includes ground (to near Vcc)
- Outputs suitable for wired-AND configurations
- Low offset voltage and fast response (typical for comparators in this family)
- Temperature range suitable for harsh environments (-40°C to +125°C)
- 8-pin package (MDREP: molded DIP/8-pin packaging)
Note: Outputs can only sink current; external pull-ups determine high-level current.
- Dual independent voltage comparators
- Open-collector outputs (sink current only; use pull-up resistors)
- Wide supply range and single-supply operation (typical 2–36 V)
- Input common-mode range includes ground (to near Vcc)
- Outputs suitable for wired-AND configurations
- Low offset voltage and fast response (typical for comparators in this family)
- Temperature range suitable for harsh environments (-40°C to +125°C)
- 8-pin package (MDREP: molded DIP/8-pin packaging)
Note: Outputs can only sink current; external pull-ups determine high-level current.
Pinout
- Pin count: 8 pins (DIP-8/SOIC-8)
- Function: Dual voltage comparator (two independent comparators) with open-collector outputs; outputs require pull-up resistors.
- Function: Dual voltage comparator (two independent comparators) with open-collector outputs; outputs require pull-up resistors.
Manufacturer
Manufacturer: Texas Instruments (TI).
What kind of company: TI is an American multinational corporation that designs and manufactures semiconductors and integrated circuits, a leading global company in analog and embedded processing technologies.
What kind of company: TI is an American multinational corporation that designs and manufactures semiconductors and integrated circuits, a leading global company in analog and embedded processing technologies.
Application
LM293MDREP is a dual general-purpose voltage comparator with open-collector outputs. Common application areas:
- Battery/power-management: undervoltage/overvoltage and fault detection
- Threshold and window detectors
- Zero-cross and AC line sensing
- Sensor conditioning (thermistors, photodiodes, etc.)
- Microcontroller interfacing (level shifting with pull-ups)
- PWM control, voltage regulation and simple regulators
- Instrumentation front-ends and signal conditioning
- Relaxation oscillators and timing circuits
- Automotive, consumer, and industrial protection/alarm circuits
Note: Requires pull-up resistors on outputs; inputs must stay within common-mode range.
- Battery/power-management: undervoltage/overvoltage and fault detection
- Threshold and window detectors
- Zero-cross and AC line sensing
- Sensor conditioning (thermistors, photodiodes, etc.)
- Microcontroller interfacing (level shifting with pull-ups)
- PWM control, voltage regulation and simple regulators
- Instrumentation front-ends and signal conditioning
- Relaxation oscillators and timing circuits
- Automotive, consumer, and industrial protection/alarm circuits
Note: Requires pull-up resistors on outputs; inputs must stay within common-mode range.
Package
An 8-pin molded DIP (DIP-8) package.
