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Texas Instruments SN74HC659NT — Analog & Data Acquisition
Texas Instruments

SN74HC659NT 74HC Transceiver Inverting 3-State, 2V–6V

MPNSN74HC659NT
End of Life

Texas Instruments 74HC series SN74HC659NT, logic type Transceiver Inverting, 3-State output, 1 element, 8 bits per element, supply 2V~6V, current output 7.8mA/7.8mA, operating temperature -40°C~85°C, Bulk package.

$0.52Ref. price · indicative, final on quote
SN74HC659NT datasheet
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Specifications

SN74HC659NT Technical Specifications
ParameterValue
Series74HC
Logic typeTransceiver, Inverting
Output type3-State
Voltage2V ~ 6V
Current - output high, low7.8mA, 7.8mA
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
Number of elements1
Number of bits per element8

Product details

74HC transceiver, inverting, 3-state — what it does and where it fits

The Texas Instruments SN74HC659NT is a single-element 8-bit transceiver from the 74HC family with inverting logic and 3-state outputs. It operates across a 2V to 6V supply range, making it compatible with 5V logic systems as well as lower-voltage 3.3V buses when the supply allows. Each output can source or sink 7.8 mA, adequate for driving standard TTL loads or a few CMOS gate inputs. The -40°C to 85°C temperature grade suits industrial environments — factory floor controls, motor drive interface cards, or outdoor telecom line cards that see thermal cycling.

Lifecycle and RoHS — the sourcing reality

The part is RoHS non-compliant, containing lead in the solder finish. This prevents use in RoHS-exempted or EU-market assemblies.

Package and handling note

The through-hole package is hand-solder friendly but takes more board area than a surface-mount equivalent.

Frequently asked questions

What is the equivalent or replacement for SN74HC659NT?

There is no official direct replacement listed in the manufacturer's cross-reference. For a non-inverting transceiver, the SN74HC245N offers similar supply range and drive but different logic polarity. For higher speed or different supply voltage, the SN74ABT2245DW (4.5V, 32 mA) or SN74LVTH16245ADGVR (2.7V, 32 mA) are surface-mount alternatives — verify pinout and function before substituting.

Is SN74HC659NT compatible with 5V logic?

Yes. The 2V to 6V supply range includes 5V, so the SN74HC659NT can be powered from a 5V rail and its inputs/outputs are 5V-compatible. The 7.8 mA output drive is sufficient for standard 5V TTL or CMOS loads.