Product Overview
Motorola SN74LS76AN Dual JK Flip-Flop with Preset and Clear - 16-Pin DIP TTL Logic Chip
Condition
Single unit available. Used, in excellent condition with nothing out of the ordinary observed. Evaluation: Visual inspection only. Function testing not performed. Recovered from legacy electronics supply chains. No accessories, documentation, or packaging included.
Ships same business day from Idaho. Packed carefully.
Product Overview
Motorola SN74LS76AN is a dual JK flip-flop integrated circuit in a 16-pin through-hole DIP package. Part of the 74LS TTL logic family, it contains two independent JK flip-flops with individual Preset and Clear inputs. Each flip-flop stores one bit and provides complementary Q and Q' outputs. The LS designation indicates Low-power Schottky technology, which runs on a regulated 5V supply. The AN suffix denotes a plastic DIP package in the commercial temperature range (0C to 70C). VCC is at pin 5 and GND at pin 13 - a non-standard pinout relative to most 74-series devices.
Key Features
- Dual independent JK flip-flops with Preset and Clear
- 16-pin DIP (Dual In-line Package), through-hole mount
- LS (Low-power Schottky) TTL technology
- Supply voltage: 4.75V to 5.75V
- Operating temperature: 0C to 70C
- Propagation delay: 20 ns
- Non-standard pinout: VCC at pin 5, GND at pin 13
- Complementary Q and Q' outputs per flip-flop
- Triggering type: Not confirmed - verify against datasheet before use
Applications
- Replacement logic in vintage arcade PCBs (Atari, Midway, and similar boards)
- Repair and restoration of S-100 bus computers and early microcomputers
- TTL-based counters, shift registers, and frequency dividers
- Legacy industrial control logic maintenance
Frequently Asked Questions
Is this compatible with 74HC or modern CMOS logic systems?
Not directly. The SN74LS76AN requires a regulated 5V supply and is a TTL-family device. It is not compatible with 3.3V CMOS systems without level shifting. Substitution with 74HC76 in timing-sensitive circuits may cause issues due to differing propagation delays - verify against your target circuit before use.
How does this differ from the 74LS107 or 74LS112?
These are related but distinct parts. The 74LS76 shares some function but differs in pinout and clock-triggering behavior. The 74LS76 has a non-standard power pinout (VCC pin 5, GND pin 13). Confirm the exact part number and pinout required by your board before substituting.
What is the triggering method - edge or pulse triggered?
Not confirmed - verify against the Motorola datasheet before use. Some 74LS76 versions are negative-edge triggered; the original 7476 is pulse-triggered. This distinction matters in timing-sensitive designs.
What is included with this unit?
The IC only. No packaging, documentation, or accessories are included. This is a single unit recovered from legacy supply stock.
Covered by the PartsMine No Hassle Guarantee. Verify pinout and triggering behavior against the Motorola SN74LS76AN datasheet before installation.
