SX1508B & SX1509B Ultra-Low Voltage GPIOs

Semtech SX1508B and SX1509B Ultra-Low Voltage GPIOs are general-purpose parallel input/output expanders ideal for low-power handheld battery-powered equipment. This family of GPIOs comes in 4-, 8-, and 16-channel configuration options and allows easy serial expansion of I/O through a standard 400kHz I2C interface. These devices come with a fully programmable LED Driver with an internal oscillator for enhanced lighting control. Keypad applications are also supported with an on-chip scanning engine that enables continuous keypad monitoring up to 64 keys without any additional host interaction reducing bus activity.

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Description Datasheet Availability Pricing (HKD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Mounting Style
Package/Case
Interface Type
Number of I/Os
Interrupt Output
Supply Voltage - Min
Supply Voltage - Max
Maximum Clock Frequency
Minimum Operating Temperature
Maximum Operating Temperature
Packaging
ESD Protection
Semtech Interface - I/O Expanders 16 CHAN LOW VOLT I2C GPIO +PWM
Datasheet
21,906In Stock
27,000Expected 17/3/2027
Cut Tape
HK$28.93
HK$21.78
HK$19.97
HK$18.00
View
Reel
HK$15.78
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
SX1509 SMD/SMT QFN-28 I2C, Serial 16 I/O With Interrupt 1.2 V 3.6 V 2 MHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
Semtech Interface - I/O Expanders 16 CHAN LOW VOLT GPIO + PWM
Datasheet
8,472In Stock
Cut Tape
HK$28.93
HK$21.78
HK$19.97
HK$18.00
View
Reel
HK$15.78
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
SX1509 SMD/SMT QFN-28 I2C, Serial 16 I/O With Interrupt 1.2 V 3.6 V 2 MHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
Semtech Interface - I/O Expanders 8 CHAN LOW VOLT I2C GPIO + PWM
Datasheet
7,423In Stock
15,000Expected 16/3/2027
Cut Tape
HK$17.02
HK$12.58
HK$11.43
HK$10.19
View
Reel
HK$8.71
MouseReel Available
Min.: 1
Mult.: 1
: 3,000
SX1508 SMD/SMT QFN-20 I2C, Serial 8 I/O With Interrupt 1.2 V 3.6 V 2 MHz - 40 C + 85 C Reel, Cut Tape, MouseReel 2 kV
Semtech Interface - I/O Expanders 8 CHAN LOW VOLT I2C GPIO + PWM
Datasheet
Non-Stocked Lead-Time 26 Weeks
Reel
HK$8.71
Min.: 3,000
Mult.: 3,000
: 3,000
SX1508 SMD/SMT QFN-20 I2C, Serial 8 I/O With Interrupt 1.2 V 3.6 V 2 MHz - 40 C + 85 C Reel 2 kV