TTL Logic Chip Pack – 74HC and 74LS DIP ICs with IC Sockets, Voltage Regulators and Crystals (281 Parts)
74 DIP logic chips (74HC and 74LS), 156 IC sockets, 16 voltage regulators and 35 crystals for TTL computers and breadboard logic.
Designed by Mematrix Lab
Description
Logic chips for TTL computers and breadboard logic
Everything around the logic chips in one pack: 74 DIP logic ICs from the 74HC (CMOS) and 74LS (TTL) families, 156 IC sockets so no chip has to be soldered directly, a set of positive, negative and adjustable voltage regulators, and the common crystals for clocks and microcontrollers. It suits builders of the TD4 4-bit CPU and other homebrew CPUs, repairs of vintage computer boards, and digital-logic experiments on a breadboard.
What's in the pack
| Part | Contents | Qty |
|---|---|---|
| 74HC series DIP logic ICs | 74HC00, 74HC02, 74HC04, 74HC08, 74HC14, 74HC32, 74HC74, 74HC86, 74HC125, 74HC132 – 5 of each | 50 |
| 74LS series DIP logic ICs | 74LS00, 74LS02, 74LS04, 74LS08, 74LS32, 74LS86 – 4 of each | 24 |
| 14-pin IC sockets (in the 74LS box) | One socket for every 74LS chip | 24 |
| DIP IC sockets (2 boxes) | 6-pin ×36, 8-pin ×24, 14-pin ×12, 16-pin ×12, 18-pin ×12, 20-pin ×12, 24-pin ×12, 28-pin ×12 | 132 |
| TO-220 voltage regulators | L7805, L7809, L7812, L7815, L7905, L7909, L7912, LM317 – 2 of each | 16 |
| HC-49S crystals | 7 frequencies, 5 of each (see below) | 35 |
| Total | 281 |
The logic chips
| Number | Function | 74HC | 74LS |
|---|---|---|---|
| 00 | Quad 2-input NAND | 5 | 4 |
| 02 | Quad 2-input NOR | 5 | 4 |
| 04 | Hex inverter | 5 | 4 |
| 08 | Quad 2-input AND | 5 | 4 |
| 14 | Hex Schmitt-trigger inverter | 5 | – |
| 32 | Quad 2-input OR | 5 | 4 |
| 74 | Dual D-type flip-flop | 5 | – |
| 86 | Quad 2-input XOR | 5 | 4 |
| 125 | Quad tri-state buffer | 5 | – |
| 132 | Quad 2-input NAND, Schmitt trigger | 5 | – |
74HC parts run from 2 – 6 V and work happily on 5 V next to 74LS parts in most hobby circuits.
Voltage regulators
| Part | Output | Max. current |
|---|---|---|
| L7805 | +5 V | 1.5 A |
| L7809 | +9 V | 1.5 A |
| L7812 | +12 V | 1.5 A |
| L7815 | +15 V | 1.5 A |
| L7905 | −5 V | 1.5 A |
| L7909 | −9 V | 1.5 A |
| L7912 | −12 V | 1.5 A |
| LM317 | Adjustable 1.25 – 37 V | 1.5 A |
Crystals (HC-49S, 2 leads)
| Frequency | Typical use |
|---|---|
| 32.768 kHz | Real-time clocks |
| 6 MHz | Microcontrollers |
| 8 MHz | Microcontrollers |
| 10 MHz | Microcontrollers |
| 11.0592 MHz | 8051 and serial (UART) baud rates |
| 12 MHz | 8051, USB |
| 16 or 20 MHz | AVR / Arduino-class chips (as supplied) |
Good to know
- The 74HC chips, the 74LS chips with their sockets and the IC socket assortment come in compartment boxes; the other parts in labelled bags.
- Parts are bagged and labelled by value or part number and packed by hand by our supplier, so a bag can occasionally hold a few pieces more or less than listed, or a close substitute value. Some bag labels are printed in Chinese next to the part numbers.
- Regulators need a heatsink at higher currents.
- Contains small parts. Not a toy; keep away from young children.
Specs and Docs
- Parts
- 281 (74 logic chips, 156 sockets)
- Logic families
- 74HC and 74LS, DIP-14/16
Shipping
Standard shipping: $9.00 for the first item, +$1.80 for each additional item. Free shipping on orders over $260.
We ship worldwide, by default with economical international post (UPU / China Post small packet) to keep shipping costs low. Orders are usually handed to the carrier within 2–5 business days, and economical international post then takes about 10–30 business days to arrive; these are estimates, not guarantees. Delivery time depends on the destination and on postal and customs handling. If you need your order by a certain date, email us before ordering: faster shipping can be arranged, with the extra cost charged at the carrier's actual rate. Items that contain batteries or magnets are marked on their product page and ship by a special carrier line; some countries and regions cannot be reached by that line, and if yours is one of them we refund the order in full.
Customs & duties
Import duties, taxes and customs requirements depend on the destination country, the shipping route and the local customs office, so we cannot say in advance whether any will apply to your parcel. Customs may hold a parcel, ask for more information, or ask for duties or taxes to be paid, even when the declared value is correct. If you have a question about your country, email us before ordering.
See our shipping & returns policy.