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LM311MX

OBSOLETE
National Semiconductor

Comparator Standard (General Purpose) Open-Collector, Open-Emitter 8-SOIC

End of life. Buy from remaining stock or find an alternate.

LM311MX is a Comparator Standard (General Purpose) Open-Collector from National Semiconductor. 1 authorized distributor quotes it on TracedParts, from RM 4.97 at quantity 1, with 22,500 units in stock for immediate despatch. Figures come from the distributors' own APIs, pulled in the catalogue snapshot of 2026-09-25, and are indicative rather than a binding quote.

RoHS COMPLIANTREACH 8-SOIC (0.154", 3.90mm Width) SMD
BEST PRICE @1
RM 4.97
DigiKey · authorized
TOTAL STOCK
22,500
1 source
SHORTEST LEAD
stock
ships from warehouse
AUTHORIZED
1 / 1
tier 1 sources

Who has LM311MX in stock, and what does it cost?

1 authorized distributor · pulled from their APIs in the catalogue snapshot of 2026-09-25
QTY pcs
DISTRIBUTOR
STOCK
MOQ
PRICE BREAKS · MYR
LEAD
@250 PCS
TIER 1 - AUTHORIZED DISTRIBUTORfranchised - full warranty - paperwork QA will accept
AUTH
22,500
245
245+4.9723
stock
ex-warehouse
RM 4.9723
RM 1,243.07 total
Buy ↗
What 250 pcs actually costs landed in Malaysia, duty and SST included: RM 1,408.90 RM 5.6356 per unit, DDP · estimate Open estimator →

What are the specifications of LM311MX?

21 parameters▾
Device specification
TypeStandard (General Purpose)
Number of Elements1
Output TypeOpen-Collector, Open-Emitter
Voltage - Supply, Single/Dual (±)5V ~ 30V, ±2.5V ~ 15V
Voltage - Input Offset (Max)7.5mV @ 15V
Current - Input Bias (Max)0.25µA @ 15V
Current - Quiescent (Max)7.5mA
Operating Temperature0°C ~ 70°C
Package / Case8-SOIC (0.154", 3.90mm Width)
Mounting TypeSurface Mount
Supplier Device Package8-SOIC
Ordering & compliance
ManufacturerNational Semiconductor
CategoryComparators
Package8-SOIC (0.154", 3.90mm Width)
MountingSurface mount
LifecycleOBSOLETE
RoHSCompliant
Moisture levelNot applicable (through hole)
PackagingTape & reel
Country of origin
HS code

Where can I download the LM311MX datasheet?

link supplied by DigiKey▾
PDF
LM311MX datasheet
link supplied by DigiKey · National Semiconductor · English
Open datasheet ↗

This is the datasheet link the distributor returned with the part record. We pass it through as they gave it, and we have not opened it - there are more than 300,000 of these and we verify only the ones we curate by hand. If it does not resolve, that is the distributor’s record, not the part.

What does LM311MX cost landed in Malaysia?

Malaysia · DDP · HS ▾
Goods
Freight · express 2 d
Import duty · 0 % (ITA-exempt)
Sales & service tax · 6 %
Customs clearance
Landed total

Estimate only. The correct HS classification for your import is your responsibility - see terms of service.

Is there a CAD symbol and footprint for LM311MX?

4 downloads▾
SCHEMATIC SYMBOL · .libPCB FOOTPRINT · .kicad_mod 3D MODEL · .stepSPICE · .mod

What can I use instead of LM311MX?

3 in comparators▾
LMV339MTX
Texas Instruments
Comparator Standard (General Purpose) CMOS, Open-Col…
25,085
RM 4.82
SN74HC688DBR
Texas Instruments
Magnitude Comparator Bit Active Low Output A=B 20-SS…
26,697
RM 5.13
74HC688DB,118
Nexperia USA Inc.
Magnitude Comparator Bit Active Low Output A=B 20-SS…
27,117
RM 5.21

Nearest peers by price within the same category. Confirm the parameters before you substitute - these are not guaranteed drop-in replacements.

Which parts are similar to LM311MX?

8 parts▾
LM393SNGLM339SNGLM2903SNGMIC842NYC5NLV14007UBDR2GM51943AHP#CF0JLMV331M7LM2901SNG

Common questions about LM311MX

7 questions▾
Is LM311MX in stock?
Yes. 22,500 units are in stock across 1 authorized distributor (DigiKey), as of the catalogue snapshot of 2026-09-25.
How much does LM311MX cost?
RM 4.9723 is the lowest unit price on this page, from DigiKey. Prices fall as quantity rises; the full price break ladder is in the quotes table. Figures come from the distributor API and are indicative, not a binding quote.
Who supplies LM311MX?
DigiKey. It is authorized, franchised distributor quoting through its own API. TracedParts carries no broker or open-market listings.
How old are these prices?
The catalogue is re-pulled from the distributors' APIs once a day, and the line under the Quotes heading says which pull the figures on this page came from. Prices and stock can move between pulls, so treat them as indicative and confirm on the distributor's site before you order.
Who quoted these prices?
Every row on the site comes from an authorized, franchised distributor through its own API: DigiKey, Mouser or element14. There are no broker or open-market listings on TracedParts. If a source ever changes, the row will say so.
Why do you show the source before the price?
Because who sold it decides what happens at incoming inspection, and a table sorted by price alone hides that. Rows are grouped by the distributor's status first and ordered by unit price inside the group.
Why are prices in ringgit?
Distributors quote in US dollars. TracedParts converts to MYR at a fixed reference rate that is printed on the page, not a live FX feed, so the ringgit figure is a sourcing estimate rather than the amount you will be billed.