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Texas Instruments SN74HCT245N — Memory (DRAM / SRAM / Flash / EEPROM)
Texas Instruments

SN74HCT245N 74HCT Transceiver, Non-Inverting, 20-DIP, Active

MPNSN74HCT245N
End of Life

Texas Instruments SN74HCT245N, Series 74HCT, Logic Type Transceiver Non-Inverting, Output Type 3-State, Through Hole, 20-DIP (0.300", 7.62mm), 4.5V–5.5V supply, -40°C to 85°C, 6mA output drive.

$0.9Ref. price · indicative, final on quote
SN74HCT245N datasheet
Packaging20-DIP (0.300", 7.62mm)
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
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Specifications

SN74HCT245N Technical Specifications
ParameterValue
Series74HCT
Logic typeTransceiver, Non-Inverting
Output type3-State
Mounting typeThrough Hole
Voltage4.5V ~ 5.5V
Current - output high, low6mA, 6mA
Operating temperature-40°C ~ 85°C (TA)
PackageTube
Case20-DIP (0.300\", 7.62mm)
Number of elements1
Number of bits per element8

Product details

8-bit bus transceiver in a through-hole DIP — what it does and where it fits

The SN74HCT245N is an 8-bit non-inverting bus transceiver from TI's 74HCT family, packaged in a 20-pin DIP for through-hole assembly. It provides bidirectional data flow between two 8-bit buses, controlled by a direction pin (DIR) and an output-enable pin (OE). The 3-state outputs let you isolate the device from the bus when it is not selected — standard for shared data lines in microprocessor or memory systems. Supply range is 4.5 V to 5.5 V, and the part is rated for industrial temperature environments from -40°C to 85°C. Output drive is 6 mA sink and source per channel, which is typical for HCT-family parts driving CMOS or TTL inputs on a backplane or peripheral bus.

Through-hole DIP — still the right call for prototyping, repair, and legacy boards

The 20-DIP (0.300", 7.62 mm) package is a through-hole footprint that fits standard breadboards, prototyping boards, and existing PCB layouts designed for DIP sockets.

Frequently asked questions

What is the difference between SN74HCT245N and SN74LS245N?

The SN74LS645-1N is a functional through-hole alternative with 15 mA output drive versus the HCT245's 6 mA, but its temperature range is 0°C to 70°C (commercial) compared to the HCT245's -40°C to 85°C (industrial). The LS part also operates at 4.75 V supply minimum versus 4.5 V for the HCT. For industrial-temperature or wider supply-margin designs, the HCT245 is the better fit.

What is the SN74HCT245N used for?

It is an 8-bit bidirectional bus transceiver with 3-state outputs, used to drive or isolate data buses between two subsystems — for example, between a microcontroller and a memory bank, or between a backplane and a peripheral card. The non-inverting logic and 6 mA drive suit CMOS and TTL interfaces in industrial control, test equipment, and legacy digital systems.