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PCA9538DB

OBSOLETE
Texas Instruments

I/O Expander 8 I2C, SMBus 400 kHz 16-SSOP

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

PCA9538DB is an I/O Expander 8 I2C from Texas Instruments. 1 authorized distributor quotes it on TracedParts, from RM 6.87 at quantity 1, with 70,567 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 16-SSOP (0.209", 5.30mm Width) SMD
BEST PRICE @1
RM 6.87
DigiKey · authorized
TOTAL STOCK
70,567
1 source
SHORTEST LEAD
stock
ships from warehouse
AUTHORIZED
1 / 1
tier 1 sources

Who has PCA9538DB 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
70,567
176
176+6.8723
stock
ex-warehouse
RM 6.8723
RM 1,718.07 total
Buy ↗
What 250 pcs actually costs landed in Malaysia, duty and SST included: RM 1,936.57 RM 7.7463 per unit, DDP · estimate Open estimator →

What are the specifications of PCA9538DB?

23 parameters▾
Device specification
DigiKey ProgrammableNot Verified
Number of I/O8
InterfaceI2C, SMBus
Interrupt OutputYes
FeaturesPOR
Output TypePush-Pull
Current - Output Source/Sink10mA, 25mA
Clock Frequency400 kHz
Voltage - Supply2.3V ~ 5.5V
Operating Temperature-40°C ~ 85°C
Mounting TypeSurface Mount
Package / Case16-SSOP (0.209", 5.30mm Width)
Supplier Device Package16-SSOP
Ordering & compliance
ManufacturerTexas Instruments
CategoryI/O Expanders
Package16-SSOP (0.209", 5.30mm Width)
MountingSurface mount
LifecycleOBSOLETE
RoHSCompliant
Moisture levelNot applicable (through hole)
PackagingTape & reel
Country of origin
HS code

Where can I download the PCA9538DB datasheet?

link supplied by DigiKey▾
PDF
PCA9538DB datasheet
link supplied by DigiKey · Texas Instruments · 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 PCA9538DB 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 PCA9538DB?

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

What can I use instead of PCA9538DB?

3 in I/O expanders▾
LC709006V-TLM-E-SA
Sanyo
I/O Expander…
35,736
RM 6.87
MCP23018T-E/SS
Microchip Technology
I/O Expander 16 I2C 3.4 MHz 24-SSOP…
35,526
RM 6.83
PCA9672BS,118
NXP Semiconductors
I/O Expander 8 I2C, SMBus 1 MHz 16-HVQFN (3x3)…
35,946
RM 6.91

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 PCA9538DB?

8 parts▾
CAT9554HV4I-GT2PCAL6416AHF,128TCA6416PWRMCP23S17T-E/MLJLC1562BFELGPCA9554PWPCA9672BS,118PI4IOE5V6416RQ2LEX

Common questions about PCA9538DB

7 questions▾
Is PCA9538DB in stock?
Yes. 70,567 units are in stock across 1 authorized distributor (DigiKey), as of the catalogue snapshot of 2026-09-25.
How much does PCA9538DB cost?
RM 6.8723 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 PCA9538DB?
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.