XD74LS145 – BCD-to-Decimal Decoder/Driver – Xinluda

The Xinluda XD74LS145 is a BCD-to-decimal decoder/driver in a 16-pin DIP package, featuring ten high-voltage open-collector outputs capable of driving lamps, relays, and other indicator loads. Available for RFQ at Pacific Component Xchange.

The XD74LS145 from Xinluda is a low-power Schottky TTL BCD-to-decimal decoder/driver belonging to the industry-standard 74LS145 logic family. It accepts a 4-bit binary-coded-decimal (BCD) input and activates one of ten mutually exclusive outputs, making it a workhorse part for decimal display, scanning, and load-switching applications. The device consists of eight inverters and ten four-input NAND gates, with the inverters arranged in pairs so that BCD input data is made available for full decoding.

Its defining feature is the set of ten high-breakdown, open-collector npn output transistors rated to sink substantial current at elevated voltage, allowing the XD74LS145 to drive incandescent lamps, relays, MOS circuitry, and other peripheral loads directly without external buffering. Full decoding of valid BCD input logic ensures that all outputs remain off for the six invalid (10 through 15) binary input combinations, simplifying fault-tolerant designs.

Key Features

• BCD-to-decimal (1-of-10) decoder/driver function
• Ten open-collector outputs for direct drive of lamps, relays, and indicator loads
• High-breakdown output transistors rated to 15 V (off-state)
• Each output capable of sinking up to 80 mA
• Full decoding of valid BCD input — all outputs off for invalid input codes
• Low-power Schottky (LS) TTL technology
• Operating supply voltage range 4.5 V to 5.25 V (5 V nominal)
• 16-pin DIP (dual in-line) package

Applications

• Decimal and numeric display decoding
• Lamp and LED indicator driving
• Relay and solenoid driver stages
• Keyboard and matrix scanning
• MOS-to-TTL interface and peripheral load switching
• Legacy and replacement industrial control logic

Why Source XD74LS145 from Pacific Component Xchange

The XD74LS145 is a specialty and increasingly hard-to-find LS-series logic device with little to no authorized-distributor stock. Pacific Component Xchange is an independent distributor focused on obsolete, end-of-life, and difficult-to-source components. We source the XD74LS145 through trusted global supply channels, apply authenticity and quality screening, and ship worldwide to keep your production lines and repair programs running.

Pricing on this part is quote-based. Request a quote (RFQ) today and our sourcing team will return current availability, lead time, and best pricing for the quantities you need.