SN74S140NG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN74S140NG4 is a dual 4-input NAND gate from TI's Schottky TTL logic family, housed in a 14-pin DIP package for through-hole assembly. The Schottky-clamped design provides fast propagation delays with 5 V TTL-compatible inputs and outputs, driving up to 50 mA output current per channel. Available in stock worldwide with competitive pricing and fast worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SN74S140NG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74S140NG4?
- Dual 4-input NAND gate configuration in a single 14-pin DIP package, providing two independent high-fan-in gates for complex combinational logic reduction
- Schottky TTL technology delivers sub-5 ns propagation delay, making SN74S140NG4 suitable for high-speed 5 V logic paths and address decoding
- High output current capability of up to 50 mA per channel enables direct driving of indicator LEDs and bus lines without external buffer stages
- 14-pin DIP through-hole package supports breadboard prototyping and easy socket-based replacement in legacy and industrial control equipment
What is SN74S140NG4 used for?
SN74S140NG4 is used in high-speed combinational logic circuits, address decoders, and bus arbitration systems operating at 5 V TTL levels where the fast Schottky switching minimizes propagation delay in time-critical paths. The dual 4-input NAND gate configuration is well-suited for implementing sum-of-products logic functions, interrupt masking circuits, and enable-decode trees in legacy industrial controllers and embedded boards. Its high output drive current also allows it to directly switch relays or LED indicators without additional buffer stages.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74S140NG4 datasheet?
SN74S140NG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74S140NG4?
Compatible alternatives and drop-in replacements for SN74S140NG4:
Frequently Asked Questions
How does SN74S140NG4's Schottky technology improve switching speed compared to standard TTL NAND gates?
SN74S140NG4 uses Schottky-clamped transistors that prevent saturation, reducing storage time and achieving propagation delays typically under 5 ns — significantly faster than standard TTL (LS) gates that typically run 9 ns to 15 ns. This speed advantage matters in address decoding and bus arbitration circuits where setup time margins are tight. The 5 V supply compatibility keeps it interchangeable with existing 74S-family inventory in legacy systems.
What is the output drive capability of SN74S140NG4 and can it directly drive an LED without a current-limiting buffer?
SN74S140NG4 can sink up to 50 mA per output, well above the 10 mA to 20 mA needed for standard indicator LEDs. A designer can connect a 5 V LED with a 220 Ω series resistor directly to the output without an intermediate buffer. This simplifies schematics and reduces component count in status indicator circuits on industrial panels and legacy TTL-based control boards.
For a logic redesign project, when would SN74S140NG4 in a 14-pin DIP be chosen over a surface-mount NAND alternative?
SN74S140NG4 in 14-pin DIP is preferred when repairing or upgrading legacy through-hole PCBs that already use 14-pin sockets, as it allows drop-in replacement without PCB layout changes. It is also preferred for prototype and lab breadboard work where through-hole components are faster to insert and replace. Surface-mount NAND alternatives are more appropriate for new 5 V designs where board area and automated assembly are primary constraints.
How many 4-input NAND functions does SN74S140NG4 contain, and how does that compare to using two separate single-gate packages?
SN74S140NG4 contains 2 independent 4-input NAND gates in a single 14-pin DIP, reducing the gate count from 2 separate ICs to 1. This halves the footprint, reduces power supply decoupling requirements, and lowers procurement complexity versus sourcing two individual packages. Both gates share a common 5 V supply, so a single 100 nF bypass capacitor placed close to the VCC pin is sufficient for both channels.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
ACS770ECB-200U-PFF-T
Allegro Microsystems
Integrated Circuit
ACS770KCB-150U-PFF-T
Allegro Microsystems
Integrated Circuit
MC33901WEF
NXP
Integrated Circuit
MC7808BDTRKG
ON Semiconductor
Integrated Circuit
PA94EC
Apex Microtechnology
Integrated Circuit
AP7315-28SR-7
Diodes Inc.
Integrated Circuit
74HCT245D
Nexperia
Integrated Circuit
CY62256VNLL-70ZXCT
Cypress Semiconductor
Integrated Circuit
EPM7032AETC44-4N
Intel
Integrated Circuit
EPM3512AQC208-10N
Intel
Integrated Circuit
EPM3256ATC144-7N
Intel
Integrated Circuit
EPM3256AQC208-7N
Intel
Integrated Circuit
EPM3256AQC208-10N
Intel
Integrated Circuit
EPM3128ATC100-7N
Intel
Integrated Circuit
EPM1270F256C4N
Intel
Integrated Circuit
EPF8282ATC100-4N
Intel
Integrated Circuit
EPF6016QC208-2N
Intel
Integrated Circuit
EPF6016ATC144-3N
Intel
Integrated Circuit
EPF10K30ATC144-3N
Intel
Integrated Circuit
EPC2TI32N
Intel
Integrated Circuit
EPC2LC20
Intel
Integrated Circuit
EP3SL150F1152C4N
Intel
Integrated Circuit
EP2SGX60DF780C5N
Intel
Integrated Circuit
EP2SGX60CF780C5N
Intel
Integrated Circuit