XD74LS74 – Dual D-Type Flip-Flop – Xinluda

The Xinluda XD74LS74 is a dual D-type positive-edge-triggered flip-flop with individual preset and clear inputs, supplied in a through-hole DIP-14 package. Part of the classic 74LS low-power Schottky TTL logic family.

The Xinluda XD74LS74 is a dual D-type positive-edge-triggered flip-flop with preset and clear, a member of the long-established 74LS low-power Schottky TTL logic family. Each package contains two independent flip-flops, each with its own data (D), clock, asynchronous preset, and asynchronous clear inputs, plus complementary Q and Q-bar outputs. Data present at the D input meeting the setup-time requirement is transferred to the output on the positive-going edge of the clock pulse. A low level on the preset or clear input sets or resets the output independently of the clock. Supplied in a through-hole DIP-14 package, the XD74LS74 is well suited for prototyping, repair, and legacy production builds.

Key Features

• Dual D-type positive-edge-triggered flip-flops in a single package
• Independent asynchronous preset and clear inputs per flip-flop
• Complementary Q and Q-bar outputs
• Operating supply voltage range: 4.75 V to 5.25 V
• Maximum clock frequency: 25 MHz (V_CC = 5 V, T_A = 25 C)
• Propagation delay clock-to-output (C_L = 15 pF): t_PLH 13 ns typ / 25 ns max, t_PHL 25 ns typ / 40 ns max
• Setup time: 20 ns; hold time: 5 ns
• Output drive: 8 mA (low-level I_OL), 0.4 mA / 400 uA (high-level I_OH)
• Operating free-air temperature range: 0 C to +70 C
• Through-hole DIP-14 package

Applications

• Frequency division and clock division circuits
• Binary and ripple counters
• Data storage and shift-register stages
• Synchronization and edge-detection logic
• Legacy TTL board repair and retrofit

Why Source XD74LS74 from Pacific Component Xchange

The XD74LS74 from Xinluda has limited authorized-distributor coverage, which can make it difficult to secure in production quantities or on short lead times. Pacific Component Xchange specializes in hard-to-find and discontinued logic, power-management ICs, and optocouplers. We source globally, verify authenticity, and ship worldwide so your build stays on schedule. Request a quote (RFQ) for the XD74LS74 today and our sourcing team will confirm availability, pricing, and lead time for your required quantity.