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Texas Instruments SN74AHCT541N — Memory (DRAM / SRAM / Flash / EEPROM)
Texas Instruments

SN74AHCT541N 74AHCT Buffer Non-Inverting, 3-State, 20-DIP

MPNSN74AHCT541N
End of Life

Texas Instruments 74AHCT series, Logic Type: Buffer, Non-Inverting, Output Type: 3-State, Supply Voltage: 4.5V ~ 5.5V, 8-bit, 20-DIP (0.300", 7.62mm), Through Hole, -40°C ~ 125°C.

$0.8Ref. price · indicative, final on quote
SN74AHCT541N datasheet
Packaging20-DIP (0.300", 7.62mm)
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Specifications

SN74AHCT541N Technical Specifications
ParameterValue
Series74AHCT
Logic typeBuffer, Non-Inverting
Output type3-State
Mounting typeThrough Hole
Voltage4.5V ~ 5.5V
Current - output high, low8mA, 8mA
Operating temperature-40°C ~ 125°C (TA)
PackageTube
Case20-DIP (0.300\", 7.62mm)
Number of elements1
Number of bits per element8

Product details

What this 8-bit buffer does on a 5V bus

The SN74AHCT541N: The 74AHCT family is a direct speed upgrade path from 74LS and 74HCT, with lower propagation delay and reduced power consumption while staying 5V-compatible. The -40°C to 125°C operating range covers industrial, automotive, and outdoor telecom enclosures — not just office-temperature racks.

3-state output — bus isolation without contention

The 3-state outputs let you tie multiple buffers to a shared data bus. When the output enable is inactive, the pins go high-impedance — no loading, no bus fight. This is the standard architecture for memory address buffers, peripheral chip-select fan-out, and multiplexed I/O lines in 8-bit microcontroller systems.

Frequently asked questions

Is SN74AHCT541N compatible with 5V logic?

Yes, the SN74AHCT541N operates on a 4.5V to 5.5V supply and is fully compatible with 5V TTL and CMOS logic families. It is not intended for 3.3V rails.

What is the difference between SN74AHCT541N and SN74AHCT540N?

The SN74AHCT541N is a non-inverting buffer; the SN74AHCT540N is an inverting buffer. Both are 8-bit, 3-state, 20-DIP parts with the same supply and temperature range. The pinout differs on the output enable logic — verify the datasheet for your specific inversion requirement.

What is the pinout of SN74AHCT541N?

The SN74AHCT541N uses a standard 20-pin DIP pinout. Pin 1 is output enable (active low), pins 2–9 are the data inputs (A1–A8), pins 11–18 are the outputs (Y1–Y8), pin 10 is GND, and pin 20 is VCC. The full pinout is in the Texas Instruments datasheet.

What replaces SN74AHCT541N if I need a surface-mount version?

Texas Instruments offers the SN74AHCT541 in SOIC, SSOP, and TSSOP packages (e.g., SN74AHCT541DWR for SOIC-20). The electrical specs are identical — same 4.5V–5.5V supply, 8 mA drive, and -40°C to 125°C range. No functional replacement is needed; only the footprint changes.