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Texas Instruments SN74AHC245N — Discrete Semiconductors

SN74AHC245N 74AHC Transceiver, 8-Bit, 3-State, 20-DIP

MPNSN74AHC245N
End of Life

Texas Instruments 74AHC series SN74AHC245N, 8-bit non-inverting transceiver with 3-state outputs, 2V to 5.5V supply, 8mA output drive, through-hole 20-DIP (0.300", 7.62mm), -40°C to 125°C operating temperature.

$0.8Ref. price · indicative, final on quote
Texas Instruments SN74AHC245N datasheet (PDF)
Packaging20-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Series74AHC
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SN74AHC245N specifications
ParameterValue
Series74AHC
Logic typeTransceiver, Non-Inverting
Output type3-State
MountingThrough Hole
Supply voltage2V ~ 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

Through-hole DIP — board fit and sourcing note

The 20-pin DIP (0.300" row spacing) is a standard footprint for through-hole boards. It mates with 20-pin DIP sockets or can be soldered directly. The 8mA output drive per channel is adequate for point-to-point logic links and short bus segments; for heavily loaded backplanes or long cables, a higher-drive family (e.g., 74ABT with 32mA output) would be needed.

For new designs, it remains a valid choice; for existing BOMs, no supply-risk flag is raised.

Frequently asked questions

Can I use SN74AHC245N as a replacement for 74HC245?

Yes, the SN74AHC245N is a direct functional replacement for the 74HC245 in most designs. The AHC series offers higher speed and lower power consumption while maintaining pin compatibility and the same 2V to 5.5V supply range. Verify the output drive (8mA) meets your load requirements.

Is SN74AHC245N pin compatible with SN74HCT245N?

Yes, the SN74AHC245N is pin compatible with the SN74HCT245N. Both are 20-pin DIP transceivers with the same DIR and OE control logic. The AHC variant operates from 2V to 5.5V, while HCT is optimized for 5V TTL-compatible inputs.

What is the closest functional second-source for SN74AHC245N?

The SN74ABT2245DW is a surface-mount (SOIC) 8-bit transceiver with higher output drive (32mA) but a fixed 4.5V supply and commercial temperature range (0°C to 70°C). It is not a pin-compatible drop-in due to package differences, but it fills the same bus-transceiver role for high-drive, 5V-only designs.