Maxim Releases LED Driver with LED Fault Detection

Editor's note: Maxim has recently introduced the MAX6977 driver family with LED fault detection. The MAX6977 serial interface LED driver provides eight open-drain, constant-current sinking, 5.5V LED driver outputs, and operates from a 3V to 5.5V supply. The MAX6977 and LED supplies can be powered up in any order, and all constant current outputs are set by an external resistor, up to 55mA each. This series of products uses 25Mb, industrial standard 4-wire serial port for control. The MAX6977 includes an LED open-circuit automatic detection circuit. The fault state is loaded into the serial port shift register when LE is set high, and is shifted out by DOUT when the next data is shifted in. The MAX6977 uses industry-standard shift registers plus latched serial ports. Data is shifted into the 8-bit shift register of the driver through data input DIN and clock input CLK. After 8 clock cycles, the input data appears on the output DOUT. This mode of operation allows multiple MAX6977s to be cascaded. The latch enable input LE loads the 8-bit data of the shift register into the 8-bit output latch to determine the LED switch. The output enable input / OE controls all eight outputs of the switch, and its fast response characteristics are suitable as a PWM input to control the brightness of the LED. The MAX6977 family of shift registers plus latched LED drivers are available in 12 models. The series is available in 8-port and 16-port versions with 5.5V or 36V rated LED output, and some models feature LED open-circuit detection and watchdog functionality. All models are powered from a 3V to 5.5V supply and operate over the -40°C to +125°C temperature range. Mainly used in architectural lighting systems, game functions, Marquee displays, order management lights, traffic lights and signal lights. Pricing and availability can now be ordered from Maxim's, with a unit price of $1.10 for 1k.


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Vertical Mount D-Sub Connectors

Antenk Standard D-Sub Series Including:
Standard Straight D-Sub Connectors Stamped Contacts
Standard High Profile D-Sub Machined Contacts
Standard Wire Wrap D-Sub Connectors Machined Contacts
Standard Straight D-Sub Connectors Machined Contacts
Standard Dip Solder D-Sub Connector Straight Machined Economy
Standard Density Vertical Low Profile D-Sub Connectors
Standard Density Press Fit D-Sub Connectors

Antenk's Vertical D-Sub Connectors Options
Number of Rows
Shell Size
Mounting Style
Packaging
Gender
Shell

Features of Antenk's Vertical D-Sub Standard Connectors
Available in 5 industry sizes/positions
Standard Density (9 pin, 15 pin, 25 pin, 37 pin, 50 pin).
Low cost & high performance, non-removable stamped contacts.
Nickel shells have indents to provide grounding and additional retention.
Optional mounting d-sub hardware available.

Materials of Antenk's Vertical D-Sub Standard Connectors
Shell: Steel, nickel plated
Insulator: Glass-filled thermoplastic. U.L. rated 94V-O
(260°C process temp)
Stamped contacts:
Male pins - Brass | Female pins - Phosphor bronze
Plating: Gold flash on entire contact
(contact factory for other plating options)

Antenk Vertical High Density D-Sub Series Including:
Dip Solder High Density D-Sub Connectors Stamped Contacts
Vertical Solder High Density D-Sub Connectors Machined
High Density D-Sub Vertical Low Profile Stamped Contacts
High Density D-Sub Vertical Low Profile Machined Contacts
High Density D-Sub Vertical High Profile Stamped Contacts

Features of Antenk's Vertical D-Sub High Density Connectors
High Profile d-subs available in Standard Density: (15 pin, 26 pin)
Stamped contacts for lower cost.
Available in receptacle (female).
Metal shell provide EMI/RFI shielding.
High profile design allows placement of other components on PCB.
Available with various hardware options.

Materials of Antenk's Vertical D-Sub High Density Connectors
Shell: Steel, nickel plated
Insulator: Thermoplastic polyester, chemical resistant, black UL 94V-O (230°C process temp)
Contacts: Female pins - Phosphor bronze
Plating: Gold flash over nickel (mating area) | Tin over nickel (solder tails)

wire wrap vertical board mount d-sub connectors, high profile vertical board mount d-sub connectors, low profile vertical board mount d-sub connectors, dip solder and press fit vertical board mount d-sub connectors

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