Encoders, Decoders, Multiplexers & Demultiplexers

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SN74AHC138/SN74AHC138-Q1 3-to-8 Line Decoder/Demux

Texas Instruments SN74AHC138/SN74AHC138-Q1 3-Line to 8-Line Decoder / Demultiplexers are designed for data-routing and high-performance memory-decoding applications that require very short propagation-delay times. These decoders can be used to minimize the effects of system decoding in high-performance memory systems. The delay times of these decoders and the enable time of the memory are usually less than the typical access time when employed with high-speed memories utilizing a fast enable circuit. This feature means that the effective system delay introduced by the decoders is negligible. The Texas Instruments SN74AHC138-Q1 devices are AEC-Q100 qualified for automotive applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (HKD) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Logic Family	Number of Input Lines	Number of Output Lines	Package/Case	Number of Bits	Propagation Delay Time	Supply Voltage - Min	Supply Voltage - Max	Mounting Style	Minimum Operating Temperature	Maximum Operating Temperature	Packaging
Encoders, Decoders, Multiplexers & Demultiplexers Automotive 2V-to-5.5 V 3-line to 8-line SN74AHC138QPWRQ1 Texas Instruments 1: HK$5.67 4,071In Stock	Mfr. Part No. SN74AHC138QPWRQ1 Mouser Part No 595-SN74AHC138QPWRQ1	Texas Instruments	Encoders, Decoders, Multiplexers & Demultiplexers Automotive 2V-to-5.5 V 3-line to 8-line Learn More about Texas Instruments ti sn74ahc138 3 to 8 line decoder demux	Datasheet	4,071In Stock	Cut Tape HK$5.67 HK$4.00 HK$3.60 HK$3.15 Reel HK$2.56 View HK$2.93 HK$2.80 HK$2.76 HK$2.49 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Decoders / Demultiplexers	AHC	3 Input	8 Output	TSSOP-16		13 ns	2 V	5.5 V	SMD/SMT	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel
Encoders, Decoders, Multiplexers & Demultiplexers Automotive 2V-to-5.5 V 3-line to 8-line SN74AHC138QWBQBRQ1 Texas Instruments 1: HK$5.67 2,897In Stock	Mfr. Part No. SN74AHC138QWBQBRQ1 Mouser Part No 595-SN74AHC138QWBRQ1	Texas Instruments	Encoders, Decoders, Multiplexers & Demultiplexers Automotive 2V-to-5.5 V 3-line to 8-line Learn More about Texas Instruments ti sn74ahc138 3 to 8 line decoder demux	Datasheet	2,897In Stock	Cut Tape HK$5.67 HK$4.00 HK$3.60 HK$3.15 Reel HK$2.56 View HK$2.93 HK$2.80 HK$2.76 HK$2.49 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Decoders / Demultiplexers	AHC	3 Input	8 Output	WQFN-16		13 ns	2 V	5.5 V	SMD/SMT	- 40 C	+ 125 C	Reel, Cut Tape, MouseReel
Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder SN74AHC138DBR Texas Instruments 1: HK$3.86 1,739In Stock	Mfr. Part No. SN74AHC138DBR Mouser Part No 595-SN74AHC138DBR	Texas Instruments	Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder Learn More about Texas Instruments ti sn74ahc138 3 to 8 line decoder demux	Datasheet	1,739In Stock	Cut Tape HK$3.86 HK$2.69 HK$2.40 HK$2.09 Reel HK$1.68 View HK$1.93 HK$1.92 HK$1.84 HK$1.64 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Decoders / Demultiplexers	AHC	3 Input	8 Output	SSOP-16	8 bit	13 ns	2 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Encoders, Decoders, Multiplexers & Demultiplexers 3-Line to 8-Line Dec oder/Demltplxr SN74AHC138DGVR Texas Instruments 1: HK$5.84 1,797In Stock	Mfr. Part No. SN74AHC138DGVR Mouser Part No 595-SN74AHC138DGVR	Texas Instruments	Encoders, Decoders, Multiplexers & Demultiplexers 3-Line to 8-Line Dec oder/Demltplxr Learn More about Texas Instruments ti sn74ahc138 3 to 8 line decoder demux	Datasheet	1,797In Stock	Cut Tape HK$5.84 HK$4.13 HK$3.72 HK$3.26 Reel HK$2.67 View HK$3.03 HK$2.90 HK$2.79 HK$2.61 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Decoders / Demultiplexers	AHC	3 Input	8 Output	TVSOP-16	8 bit	13 ns	2 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder A 595-S N74AHC138D A 595-SN A 595-SN74AHC138D SN74AHC138DR Texas Instruments 1: HK$5.51 4,575In Stock	Mfr. Part No. SN74AHC138DR Mouser Part No 595-SN74AHC138DR	Texas Instruments	Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder A 595-S N74AHC138D A 595-SN A 595-SN74AHC138D Learn More about Texas Instruments ti sn74ahc138 3 to 8 line decoder demux	Datasheet	4,575In Stock	Cut Tape HK$5.51 HK$3.90 HK$3.51 HK$3.07 Reel HK$2.51 View HK$2.86 HK$2.73 HK$2.68 HK$2.44 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	Decoders / Demultiplexers	AHC	3 Input	8 Output	SOIC-16	8 bit	13 ns	2 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder SN74AHC138N Texas Instruments 1: HK$6.82 436In Stock	Mfr. Part No. SN74AHC138N Mouser Part No 595-SN74AHC138N	Texas Instruments	Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder Learn More about Texas Instruments ti sn74ahc138 3 to 8 line decoder demux	Datasheet	436In Stock	HK$6.82 HK$4.85 HK$4.36 HK$3.82 View HK$3.57 HK$3.42 HK$3.29 HK$3.16 HK$3.07	Min.: 1 Mult.: 1	Decoders / Demultiplexers	AHC	3 Input	8 Output	PDIP-16	8 bit	13 ns	2 V	5.5 V	Through Hole	- 40 C	+ 85 C	Tube
Encoders, Decoders, Multiplexers & Demultiplexers 3-Line to 8-Line Dec oder/Demltplxr SN74AHC138NSR Texas Instruments 1: HK$7.56 803In Stock	Mfr. Part No. SN74AHC138NSR Mouser Part No 595-SN74AHC138NSR	Texas Instruments	Encoders, Decoders, Multiplexers & Demultiplexers 3-Line to 8-Line Dec oder/Demltplxr Learn More about Texas Instruments ti sn74ahc138 3 to 8 line decoder demux	Datasheet	803In Stock	Cut Tape HK$7.56 HK$5.45 HK$4.92 HK$4.32 Reel HK$3.58 View HK$4.04 HK$3.87 HK$3.73 HK$3.50 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Decoders / Demultiplexers	AHC	3 Input	8 Output	SOIC-16	8 bit	13 ns	2 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder A 595-S N74AHC138PW A 595-S A 595-SN74AHC138PW SN74AHC138PWR Texas Instruments 1: HK$4.27 741In Stock 4,000Expected 7/12/2026	Mfr. Part No. SN74AHC138PWR Mouser Part No 595-SN74AHC138PWR	Texas Instruments	Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder A 595-S N74AHC138PW A 595-S A 595-SN74AHC138PW Learn More about Texas Instruments ti sn74ahc138 3 to 8 line decoder demux	Datasheet	741In Stock 4,000Expected 7/12/2026	Cut Tape HK$4.27 HK$2.99 HK$2.68 HK$2.33 Reel HK$1.91 View HK$2.16 HK$2.06 HK$2.01 HK$1.85 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	Decoders / Demultiplexers	AHC	3 Input	8 Output	TSSOP-16	8 bit	13 ns	2 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel
Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder SN74AHC138RGYR Texas Instruments 1: HK$3.78 507In Stock	Mfr. Part No. SN74AHC138RGYR Mouser Part No 595-SN74AHC138RGYR	Texas Instruments	Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder Learn More about Texas Instruments ti sn74ahc138 3 to 8 line decoder demux	Datasheet	507In Stock	Cut Tape HK$3.78 HK$2.59 HK$2.31 HK$1.99 Reel HK$1.51 View HK$1.84 HK$1.75 HK$1.68 HK$1.47 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Decoders / Demultiplexers	AHC	3 Input	8 Output	VQFN-16	8 bit	13 ns	2 V	5.5 V	SMD/SMT	- 40 C	+ 85 C	Reel, Cut Tape, MouseReel

SN74AHC138/SN74AHC138-Q1 3-to-8 Line Decoder/Demux

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