General view

74LS138

IPRS Băneasa

Also known as
54LS138
Year
Unknown
Category
Components
Type
Integrated circuits
Documentation score
1/5
Last edited
23 OCT 2026

Specifications

Type
TTL digital integrated circuit
Function
3-to-8 line decoders/multiplexers
Package
MP-117
Logic family
TTL-LS
Operating temperature range
−55…+125 °C, 0…+70 °C (see Variants)
Supply voltage (VS)
4.50…5.50 V, 4.75…5.25 V (see Variants)

Sources: [1][2]

Variants (2)

Note
54LS138−55…+125 °C4.50…5.50 Vpreliminary data
74LS1380…+70 °C4.75…5.25 Vpreliminary data

Click a column heading to sort. „+” adds a variant to the comparison (74LS138).

Description

The 74LS138 is a TTL-LS digital integrated circuit of the 54/74LS series of IPRS Băneasa: 3-to-8 line decoders/multiplexers [1].

The I.P.R.S. Băneasa Full Line Condensed Catalog (1990) lists the 54LS138 and 74LS138 (both marked as preliminary data), as 3-to-8 line decoders/multiplexers in an MP-117 package [1]. By the catalog’s table of families, the 74LS138 works at 0…+70 °C from a 4.75…5.25 V supply, and the 54LS138 at −55…+125 °C from 4.50…5.50 V [2].

Gallery

IPRS Băneasa 74LS138: Pinout (1990 catalogue)No image available
Pinout (1990 catalogue)
IPRS Băneasa 74LS138: MP-117 case outline (dimensions in mm)No image available
MP-117 case outline (dimensions in mm)

Documents

No documents available yet.

References

  1. [1]I.P.R.S. Băneasa – „Full Line Condensed Catalog”, 1990, section 1 „Digital integrated circuits”, „T.T.L. families”, p. 1-21
  2. [2]I.P.R.S. Băneasa – „Full Line Condensed Catalog”, 1990, section 1 „Digital integrated circuits”, „General informations”, „Basic characteristics”, p. 1-XX