Binary Counter, Synchronous, Bidirectional, TTL, CDIP20,
| Parameter Name | Attribute value |
| Is it Rohs certified? | incompatible |
| package instruction | DIP, DIP20,.3 |
| Reach Compliance Code | unknown |
| Counting direction | BIDIRECTIONAL |
| JESD-30 code | R-XDIP-T20 |
| JESD-609 code | e0 |
| Load/preset input | YES |
| Logic integrated circuit type | BINARY COUNTER |
| Operating mode | SYNCHRONOUS |
| Number of functions | 1 |
| Number of terminals | 20 |
| Maximum operating temperature | 125 °C |
| Minimum operating temperature | -55 °C |
| Output characteristics | 3-STATE |
| Package body material | CERAMIC |
| encapsulated code | DIP |
| Encapsulate equivalent code | DIP20,.3 |
| Package shape | RECTANGULAR |
| Package form | IN-LINE |
| power supply | 5 V |
| Certification status | Not Qualified |
| Filter level | 38535Q/M;38534H;883B |
| Nominal supply voltage (Vsup) | 5 V |
| surface mount | NO |
| technology | TTL |
| Temperature level | MILITARY |
| Terminal surface | Tin/Lead (Sn/Pb) |
| Terminal form | THROUGH-HOLE |
| Terminal pitch | 2.54 mm |
| Terminal location | DUAL |
| Base Number Matches | 1 |

| 54F579/BRA | 54F579/B2A | 54F579/BSA | |
|---|---|---|---|
| Description | Binary Counter, Synchronous, Bidirectional, TTL, CDIP20, | Binary Counter, Synchronous, Bidirectional, TTL, CQCC20, | Binary Counter, Synchronous, Bidirectional, TTL, CDFP20, |
| Is it Rohs certified? | incompatible | incompatible | incompatible |
| package instruction | DIP, DIP20,.3 | QCCN, LCC20,.35SQ | DFP, FL20,.3 |
| Reach Compliance Code | unknown | unknown | unknown |
| Counting direction | BIDIRECTIONAL | BIDIRECTIONAL | BIDIRECTIONAL |
| JESD-30 code | R-XDIP-T20 | S-XQCC-N20 | R-XDFP-F20 |
| JESD-609 code | e0 | e0 | e0 |
| Load/preset input | YES | YES | YES |
| Logic integrated circuit type | BINARY COUNTER | BINARY COUNTER | BINARY COUNTER |
| Operating mode | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS |
| Number of functions | 1 | 1 | 1 |
| Number of terminals | 20 | 20 | 20 |
| Maximum operating temperature | 125 °C | 125 °C | 125 °C |
| Minimum operating temperature | -55 °C | -55 °C | -55 °C |
| Output characteristics | 3-STATE | 3-STATE | 3-STATE |
| Package body material | CERAMIC | CERAMIC | CERAMIC |
| encapsulated code | DIP | QCCN | DFP |
| Encapsulate equivalent code | DIP20,.3 | LCC20,.35SQ | FL20,.3 |
| Package shape | RECTANGULAR | SQUARE | RECTANGULAR |
| Package form | IN-LINE | CHIP CARRIER | FLATPACK |
| power supply | 5 V | 5 V | 5 V |
| Certification status | Not Qualified | Not Qualified | Not Qualified |
| Filter level | 38535Q/M;38534H;883B | 38535Q/M;38534H;883B | 38535Q/M;38534H;883B |
| Nominal supply voltage (Vsup) | 5 V | 5 V | 5 V |
| surface mount | NO | YES | YES |
| technology | TTL | TTL | TTL |
| Temperature level | MILITARY | MILITARY | MILITARY |
| Terminal surface | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) |
| Terminal form | THROUGH-HOLE | NO LEAD | FLAT |
| Terminal pitch | 2.54 mm | 1.27 mm | 1.27 mm |
| Terminal location | DUAL | QUAD | DUAL |
| Base Number Matches | 1 | 1 | 1 |