Product Summary

The SN74HC138N is a 3-line to 8-line decoder. The SN74HC138N is designed to be used in high-performance memory-decoding or data- routing applications requiring very short propagation delay times. In high-performance memory systems, the SN74HC138N can be used to minimize the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory are usually less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible

Parametrics

SN74HC138N absolute maximum ratings: (1) VI = VCC or 06 V: ±0.1±100, ±1000, ±1000nA; (2) ICCVI = VCC or 0,IO = 06 V: 8, 160, 80μA; (3) Ci2 V to 6 V: 3 10, 10, 10pF; (4) VOLVI = VIH or VIL IOL = 4 mA 4.5 V: 0.17 0.26, 0.4, 0.33V; (5) VOLVI = VIH or VIL IOL = 5.2 mA 6 V: 0.15 0.26, 0.4, 0.33V; (6) VOHVI = VIH or VIL IOH = -4 mA 4.5 V: 3.98 4.3, 3.7, 3.84V; (7) VOHVI = VIH or VIL IOH = -5.2 mA 6 V: 5.48 5.8, 5.2, 5.34V.

Features

SN74HC138N features: (1) Targeted Specifically for High-SpeedMemory Decoders and Data-TransmissionSystems; (2) Wide Operating Voltage Range of 2 V to 6 V; (3) Outputs Can Drive Up To 10 LSTTL Loads; (4) Low Power Consumption, 80-μA Max ICC; (5) Typical tpd = 15 ns; (6) ±4-mA Output Drive at 5 V; (7) Low Input Current of 1 μA Max; (8)Incorporate Three Enable Inputs to SimplifyCascading and/or Data Reception.

Diagrams

 SN74HC138N pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
SN74HC138N
SN74HC138N

Texas Instruments

Encoders, Decoders, Multiplexers & Demultiplexers 3-to-8 Line Decoder

Data Sheet

0-1: $0.26
1-25: $0.19
25-100: $0.15
100-250: $0.14
SN74HC138NE4
SN74HC138NE4

Texas Instruments

Encoders, Decoders, Multiplexers & Demultiplexers 3 to 8-Line Decdr/Demltplxer

Data Sheet

0-1: $0.22
1-25: $0.17
25-100: $0.15
100-250: $0.11
SN74HC138NSR
SN74HC138NSR

Texas Instruments

Encoders, Decoders, Multiplexers & Demultiplexers 3-to-8 Line Decoder

Data Sheet

0-1: $0.23
1-25: $0.18
25-100: $0.15
100-250: $0.11
SN74HC138NSRG4
SN74HC138NSRG4

Texas Instruments

Encoders, Decoders, Multiplexers & Demultiplexers 3 to 8-Line Decdr/Demltplxer

Data Sheet

0-1: $0.22
1-25: $0.17
25-100: $0.15
100-250: $0.11