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Catalyst Semiconductor Inc. CAT9534YI-G

IC XPND 400KHZ I2C SMBUS 16TSSOP

Answer first: this page is a purchasing reference for the exact part number CAT9534YI-G from Catalyst Semiconductor Inc.. Use it to start datasheet, package, manufacturer and RFQ verification; do not treat page text as a live stock, price or lead-time promise.

Manufacturer: Catalyst Semiconductor Inc. Category: I/O Expanders Part number: CAT9534YI-G Package: 16-TSSOP (0.173", 4.40mm Width) RFQ verification required

Key Parameters

Part NumberCAT9534YI-G
ManufacturerCatalyst Semiconductor Inc.
CategoryI/O Expanders
package16-TSSOP (0.173", 4.40mm Width)
seriesCAT9534
packagingBulk
product statusActive
param 1Not Verified
param 28
param 3I2C, SMBus
param 4Yes
param 5POR
param 6Open Drain
param 710mA, 24mA
param 8400 kHz
param 92.3V ~ 5.5V
param 10-40°C ~ 85°C
param 11-
param 12-
param 13Surface Mount
param 1416-TSSOP

Parameters are provided for purchasing review. Confirm package, suffix, lifecycle status, datasheet revision and approved substitutes before ordering.

How to Verify CAT9534YI-G Before Ordering

Datasheet and parameter checks

  • Confirm the full manufacturer part number, not only a shortened search keyword.
  • Compare package, pinout, dimensions, voltage or rating fields, temperature range and compliance wording against the released BOM.
  • Use the manufacturer datasheet or drawing for electrical and mechanical limits before approving a substitute.

RFQ fields SENICO needs

  • Send exact part number, manufacturer, quantity, target delivery date, destination and required packaging.
  • State whether alternates are allowed, and list any date-code, certificate, traceability or customer AVL requirement.
  • Keep exact stock, factory lead time and proposed alternatives in separate quote lanes.

For CAT9534YI-G, SENICO recommends checking manufacturer marking, package, date code, requested quantity, approved vendor requirements and replacement risk before issuing a purchase order. If a supplier suggests an equivalent, record the changed fields and approval owner before comparing price.

We do not treat displayed data as a real-time stock or price commitment. The RFQ reply is the verified commercial reference.

Related buying guides: stock and lead-time verification, equivalent IC comparison, and BOM RFQ preparation.