CDB454E

The CDB454E is a TTL logic integrated circuit, a 4 × 2-input AND-OR-INVERT gate, listed in the Agenda radioelectronistului (2nd edition, 1989) among the integrated circuits made in Romania by IPRS Băneasa, in a TO-116 package [1]. Its codes (CDB454E, CDB454EM, CDB454HE and CII46) are in the Variants table; the pinout is in the Gallery.

The panel is headed „CDB 454 E (EM, HE)” [1].

Under the CDB codes the panel also prints the code „CII46” [1].

The 1st edition of the Agenda (1983) describes it as a single AND-OR-INVERT gate with 2 + 2 + 2 + 3 inputs (the 2nd edition: 4 × 2 inputs) [3].

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

Part	Meaning
CDB	characteristic prefix of IPRS Băneasa for logic integrated circuits
454	serial number of the circuit (2–4 digits)
–, H	series type: – = standard (medium speed), H = fast
E	package: E = dual-in-line (plastic DIL)
–, M	operating temperature range: – = 0…+70 °C, M = −55…+125 °C

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 CDB454E and CDB454EM as 4-wide 2-input AND-OR-INVERT gates in a TO-116 package, with the logic function Y = ¬(A·B + C·D + E·F + G·H) [4]. By the catalog’s table of families, the CDB454E works at 0…+70 °C from a 4.75…5.25 V supply, and the CDB454EM at −55…+125 °C from 4.50…5.50 V [5].

The catalog prints the CDB454HE and CDB454HEM in a separate block, as 3-wide 2-input + one 3-input AND-OR-INVERT gates with the logic function Y = ¬(A·B + C·D + E·F·G + H·I) and their own pinout (in the Gallery), also in a TO-116 package [4]; by the table of families, the CDB454HE works at 0…+70 °C from a 4.75…5.25 V supply and the CDB454HEM at −55…+125 °C from 4.50…5.50 V [5].