Features (VCCI = VCCO = +5V, VEE = 0V.) Propagation delay 700 ps Overdrive dispersion 20 ps Fast rise and fall times 150 ps Supply range 5V to 12V Input common mode range extends 200 mV below negative rail RSPECL outputs Description The LMH7324 is a quad comparator with 700 ps propagation delay and low dispersion of 20 ps for a supply voltage of 5V. The input voltage range extends 200 mV below the negative supply. This enables the LMH7324 to ground sense even when operating on a single power supply. The device operates from a wide supply voltage range from 5V to 12V, which allows for a wide input voltage range. However, if a wide input voltage range is not required, operating from a single-ended 5V supply results in a significant power savings, and less heat dissipation. The outputs of the LMH7324 are RSPECL compatible and can also be configured to create LVDS levels. The LMH7324 operates over the industrial temperature range of −40°C to 125°C. The LMH7324 is available in a 32-Pin LLP package. Applications Digital receivers High speed signal restoration Zero-crossing detectors High speed sampling Window comparators High speed signal triggering

Also Recommended LMH7220▲ For A Single LVDS 2.9nS Prop Delay High Speed Comparator LMH7322▲ For A Dual Version typical schematic

Typical Application click for larger image typical schematic	Connection Diagram click for larger image schematic symbol
Typical Performance click for larger image tpd vs supply over temp

Parameters / Values	LMH7324	LMH7220	LMH7322
Response Time	0.0007 us	0.0029 us	0.0007 us
Output Bus	LVDS/RSPECL	LVDS	LVDS/RSPECL
Supply Min	5 Volt	2.7 Volt	2.7 Volt
Supply Max	12 Volt	12 Volt	12 Volt
Channels	4 Channels	1 Channels	2 Channels
Offset Voltage max, 25C	9.5 mV	2.7 mV	8 mV
Output Current	25 mA	5 mA	50 mA
Input Range	Vcm to V-	Vcm to V-	Vcm to V-
Supply Current Per Channel	25 mA	7.5 mA	30 mA
PowerWise Rating 3	18 uA x us	22 uA x us	21 uA x us
Max Input Bias Current	5000 nA	7000 nA	5000 nA
Special Features	LVDS/RSPECL Out	LVDS Out	Adj Output Swing, Adj Hysteresis
Temperature Min	-40 deg C	-40 deg C	-40 deg C
Temperature Max	85 deg C	125 deg C	125 deg C
Function	Comparator	Comparator	Comparator
PowerWise	Yes	Yes	Yes

Datasheets

Title		Size	Date	Other Language
	LMH7324 Quad 700 ps High Speed Comparator with RSPECL Outputs	524 Kbytes	23-Jul-10	日本語

Application Notes

Title		Size	Date	Other Language
	AN-1683: Application Note 1683 LMH7324 High Speed Comparator Evaluation Board	1363 Kbytes	13-Sep-07	日本語 中文

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMH7324SQ/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty ARROW Worldwide 900 AVNET-EM Worldwide 1000 DIGI-KEY Worldwide 2325 FARNELL Europe and Asia 80 RS COMPONENTS Worldwide 42 TAYLOR Americas 900	$5.25 each at 1K+ pcs	reel of 1000
LMH7324SQX/NOPB RoHS Status	LLP	Full production Lead Time: 6 weeks	Distributor Region Qty DIGI-KEY Worldwide 0	$5.25 each at 1K+ pcs	reel of 4500

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMH7324.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMH7324 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LMH7324EVAL	LMH7324 Quad 700ps High Speed Comparator with RSPECL Outputs Evaluation Board	Full production	Distributor Region Qty AVNET-EM Worldwide 2 DIGI-KEY Worldwide 0 MOUSER Worldwide 3	$130.00 each	1
Description: This board is designed to demonstrate the LMH7324 quad comparator with RSPECL outputs. It will facilitate the evaluation of the LMH7324 configured as a window detector. The board detects the level of the incoming signal and presents the outcome in a 3-bit presentation. One bit indicates that the signal is below the lowest window level, another bit indicates that the signal is above the highest window level, and the third bit indicates that the incoming signal is just between both set levels. All three outputs are fed to SMA connectors mounted at the edge of the board. The impedance of the output track is 50?which makes it easy to connect these signals to any scope or analyzer by the use of a 50?coaxial cable. Each comparator of the LMH7324 has individual positive supplies for the input and output circuits. The negative supply is common for all input and output circuitry. Contents: LMH7324 Logarithmic Power Detector Evaluation Board LMH7324 Datasheet Application Note 1683 LMH7324 High Speed Comparator Evaluation Board

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format
LMH7324SQ/NOPB	60.581	LLP	32	1	260	Detail	Download	ibis file	NS UZXYTT L7324SQ
LMH7324SQX/NOPB	60.581	LLP	32	1	260	Detail	Download	ibis file	NS UZXYTT L7324SQ

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMH7324.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMH7324 is located at RoHS Status.

CAD Symbols and Models Download LMH7324 CAD Symbols

Models ibis file

Reliability Metrics

Part Number	Process	EFR Reject	EFR Sample Size	PPM	LTA Rejects	LTA Device Hours	FITS	MTTF (Hours)
LMH7324SQ	VIP 10	0	13411	0	0	1245000	3	353272149
LMH7324SQX	VIP 10	0	13411	0	0	1245000	3	353272149

Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

For more information on Reliability Metrics, please click here.

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LMH7324.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LMH7324 is located at RoHS Status.