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Product Detailed Parameters
- Description：IC COMPARATOR 4 GEN PUR 32WQFN
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：General Purpose
- Number of Elements：4
- Output Type：Differential, LVDS, RSPECL
- Voltage - Supply, Single/Dual (±)：5V ~ 12V, ±2.5V ~ 6V
- Voltage - Input Offset (Max)：9.5mV @ 5V
- Current - Input Bias (Max)：5µA @ 5V
- Current - Output (Typ)：-
- Current - Quiescent (Max)：7.5mA
- CMRR, PSRR (Typ)：80dB CMRR, 75dB PSRR
- Propagation Delay (Max)：0.74ns
- Hysteresis：20.8mV
- Operating Temperature：-40°C ~ 125°C
- Package / Case：32-WFQFN Exposed Pad
- Mounting Type：Surface Mount
- Supplier Device Package：32-WQFN (5x5)
- Grade：-
- Qualification：-
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Overview
The LMH7324SQ/NOPB is a quad high-speed comparator manufactured by Texas Instruments, housed in a 32-WQFN package. It features RSPECL outputs and operates within a supply voltage range of 2.7V to 12V (single) or ±1.35V to ±6V (dual). Key electrical parameters include a maximum propagation delay of 0.783ns, typical CMRR and PSRR of 80dB, and a maximum input offset voltage of 8mV at 5V. The device supports a maximum output current of 25mA and functions across an operating temperature range of -40°C to 125°C.
Feature Summary
- Integrates four independent high-speed comparators with RSPECL differential outputs for signal integrity.
- Provides low propagation delay performance suitable for high-frequency timing applications.
- Offers wide single or dual power supply flexibility to accommodate various system voltages.
Applications
- High-speed digital signal processing circuits
- Video synchronization and timing recovery systems
- Precision threshold detection in communication interfaces
Procurement Notes
Verify the specific suffix 'SQ' against the manufacturer's latest datasheet to confirm package dimensions and thermal characteristics. Ensure the NOPB designation aligns with current RoHS compliance requirements for your region. Cross-reference the 32-WQFN exposed pad thermal requirements during PCB layout to maintain reliable operation within the specified temperature range.
Selection Notes
Select this component when multiple independent comparison channels are required in a compact footprint. The RSPECL output interface is ideal for driving long traces with minimal noise susceptibility. Consider the 80dB CMRR specification for environments with significant common-mode noise. Verify that the 25mA output drive capability meets the load requirements of the downstream circuitry without external buffering.
Part Context
This part belongs to the LMH732x family of high-speed comparators from Texas Instruments, which also includes the dual-channel LMH7322 variant. The family is designed for applications requiring fast response times and robust output drivers. The LMH7324 provides four channels in a single package, offering a space-efficient solution compared to using discrete single comparators.
Replacement Considerations
The LMH7322SQ/NOPB serves as a verified substitute if only two comparison channels are required, sharing identical electrical specifications and pinout compatibility for the active channels. Ensure the application does not require the full four-channel capacity before substituting.
