SN74LVC240ANSRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74LVC240ANSRG4 is an 8-channel inverting bus buffer and line driver with 3-state outputs in a 20-pin SOP package, operating from 1.65 V to 3.6 V. It provides 24 mA output drive with 50 pF load tolerance, two active-low enable inputs, and suits low-voltage CMOS bus driving and signal inversion applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- SN74LVC240ANSRG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74LVC240ANSRG4?
- 8-channel inverting bus buffer with dual active-low 3-state enable
- LVC-family CMOS logic operating from 1.65 V to 3.6 V supply
- 24 mA output sink current with 50 pF load capacitance rating
- 5 V tolerant inputs enable mixed 3.3 V and 5 V system interfacing
- Two independent 4-channel enable groups for bus partitioning
- 20-pin SOP tape-and-reel packaging for automated assembly
What is SN74LVC240ANSRG4 used for?
The SN74LVC240ANSRG4 is used in low-voltage microprocessor and FPGA systems to drive and invert 8-bit data or address bus signals, providing electrical isolation between subsystems operating at 1.8 V, 2.5 V, or 3.3 V. Its 5 V-tolerant inputs allow direct connection to legacy 5 V TTL outputs without additional clamping, making it common in mixed-voltage board designs. It also serves in bus isolation, signal conditioning, and output port expansion in handheld consumer electronics and industrial controllers.
What are the specifications of SN74LVC240ANSRG4?
| YTEOL | 0 |
| Control Type | ENABLE LOW |
| Family | LVC/LCX/Z |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.024A |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Prop. Delay@Nom-Sup | 6.5ns |
| Propagation Delay (tpd) | 7.5ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 1.65V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.60 |
Where can I find the SN74LVC240ANSRG4 datasheet?
SN74LVC240ANSRG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LVC240ANSRG4?
Compatible alternatives and drop-in replacements for SN74LVC240ANSRG4:
Bus Driver, LVC/LCX/Z Series, 2-Func, 4-Bit, Inverted Output, CMOS, PDSO20
Frequently Asked Questions
Does the SN74LVC240ANSRG4 invert its outputs, and how are the two enable groups organized?
Yes, each of the 8 channels inverts its input, so a logic HIGH input produces a LOW output. The 8 channels are split into two groups of 4, each controlled by an independent active-low output enable pin. Both groups occupy the same 20-pin SOP package operating from 1.65 V to 3.6 V supply, allowing partial bus enable in systems where only half the channels need to be active simultaneously.
Can the SN74LVC240ANSRG4 interface 5 V TTL outputs into a 3.3 V logic system?
Yes, the device's inputs are 5 V tolerant, meaning they safely accept input voltages up to 5.5 V while the device itself operates from a 1.65 V to 3.6 V supply. This makes it a practical solution for mixed-voltage PCBs where legacy 5 V TTL or CMOS outputs must drive a 3.3 V bus without external clamping diodes or dedicated level translators.
What output drive current does each channel deliver and what is the maximum rated load capacitance?
Each output can sink 24 mA of current and drive bus loads with capacitances up to 50 pF while maintaining valid LVC-family logic levels. This performance allows the SN74LVC240ANSRG4 to drive multiple parallel gate inputs or long PCB traces at 3.3 V without additional buffering, covering typical fanout requirements in microprocessor address and data bus applications.
How does the SN74LVC240ANSRG4 compare to the SN74LVC244A for designs that do not require signal inversion?
The SN74LVC244A is a non-inverting equivalent in the same 20-pin package operating over the same 1.65 V to 3.6 V supply range with identical 24 mA drive and 50 pF load ratings. When the application requires signal inversion as part of the bus interface — for example, driving active-low chip-select lines — the SN74LVC240ANSRG4 integrates the inversion function, eliminating a separate inverter stage and reducing component count.
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