General view

CDB446E

IPRS Băneasa

Year
Unknown
Category
Components
Type
Integrated circuits
Documentation score
1/5
Last edited
23 OCT 2026

Specifications

Type
TTL digital integrated circuit
Function
BCD-to-7-segment decoder
Package
MP-117
Logic family
TTL (standard)
Operating temperature range
0…+70 °C, −55…+125 °C (see Variants)
Supply voltage (VS)
4.75…5.25 V, 4.50…5.50 V (see Variants)

Sources: [1][2][3][4]

Variants (2)

CDB446E0…+70 °C4.75…5.25 V
CDB446EM−55…+125 °C4.50…5.50 V

Click a column heading to sort. „+” adds a variant to the comparison (CDB446E).

Description

The CDB446E is a BCD-to-7-segment decoder, a logic integrated circuit listed in the Agenda radioelectronistului (1st edition, 1983) among the logic integrated circuits made by IPRS Băneasa [1].

It appears only in the 1st edition of the Agenda, printed „CDB 446 E”; the 2nd edition (1989) no longer lists it [1].

Coded as (IPRS Băneasa code for logic integrated circuits) [2]:

Part Meaning
CDB characteristic prefix of IPRS Băneasa for logic integrated circuits
446 serial number of the circuit (2–4 digits)
E package: E = dual-in-line (plastic DIL)

The logic integrated circuits of IPRS Băneasa (generally TTL) are always made in the E version (TO-116 package), some also in the P version (TO-85 package) [2].

The I.P.R.S. Băneasa Full Line Condensed Catalog (1990) lists the CDB446E and CDB446EM as BCD-to-seven-segment decoders/drivers with active-low, open-collector, 30 V outputs in an MP-117 package [3]. By the catalog’s table of families, the CDB446E works at 0…+70 °C from a 4.75…5.25 V supply, and the CDB446EM at −55…+125 °C from 4.50…5.50 V [4].

Gallery

IPRS Băneasa CDB446E: Pinout (1990 catalogue)No image available
Pinout (1990 catalogue)
IPRS Băneasa CDB446E: 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]N. Drăgulănescu – „Agenda radioelectronistului”, 1st edition, Editura Tehnică, 1983, section 3.10.2.1 „Circuite integrate logice (numerice)”, A) „Produse IPRS-Băneasa”, p. 519
  2. [2]N. Drăgulănescu – „Agenda radioelectronistului”, 2nd edition, Editura Tehnică, 1989, section 34.5 „Coduri românești”, p. 583
  3. [3]I.P.R.S. Băneasa – „Full Line Condensed Catalog”, 1990, section 1 „Digital integrated circuits”, „T.T.L. families”, p. 1-10
  4. [4]I.P.R.S. Băneasa – „Full Line Condensed Catalog”, 1990, section 1 „Digital integrated circuits”, „General informations”, „Basic characteristics”, p. 1-XX