Registered Bus Transceiver, 1-Func, 8-Bit, True Output, TTL, PDIP28,
| Parameter Name | Attribute value |
| Is it lead-free? | Contains lead |
| Is it Rohs certified? | incompatible |
| Maker | Fairchild |
| package instruction | DIP, DIP28,.6 |
| Reach Compliance Code | compliant |
| Control type | INDEPENDENT CONTROL |
| Counting direction | BIDIRECTIONAL |
| JESD-30 code | R-PDIP-T28 |
| JESD-609 code | e0 |
| Logic integrated circuit type | REGISTERED BUS TRANSCEIVER |
| Humidity sensitivity level | 2A |
| Number of digits | 8 |
| Number of functions | 1 |
| Number of terminals | 28 |
| Maximum operating temperature | 70 °C |
| Minimum operating temperature | |
| Output characteristics | 3-STATE |
| Output polarity | TRUE |
| Package body material | PLASTIC/EPOXY |
| encapsulated code | DIP |
| Encapsulate equivalent code | DIP28,.6 |
| Package shape | RECTANGULAR |
| Package form | IN-LINE |
| Peak Reflow Temperature (Celsius) | 250 |
| power supply | 5 V |
| Certification status | Not Qualified |
| Nominal supply voltage (Vsup) | 5 V |
| surface mount | NO |
| technology | TTL |
| Temperature level | COMMERCIAL |
| Terminal surface | Tin/Lead (Sn/Pb) |
| Terminal form | THROUGH-HOLE |
| Terminal pitch | 2.54 mm |
| Terminal location | DUAL |
| Maximum time at peak reflow temperature | 30 |
| translate | N/A |
| Trigger type | POSITIVE EDGE |
| 74F550PCQM | 54F550FMQB | 54F551FM | 54F550FM | 74F550DCQM | 74F551PCQM | 74F551DCQM | |
|---|---|---|---|---|---|---|---|
| Description | Registered Bus Transceiver, 1-Func, 8-Bit, True Output, TTL, PDIP28, | Registered Bus Transceiver, 1-Func, 8-Bit, True Output, TTL, CDFP28, | Registered Bus Transceiver, 1-Func, 8-Bit, Inverted Output, TTL, CDFP28, | Registered Bus Transceiver, 1-Func, 8-Bit, True Output, TTL, CDFP28, | Registered Bus Transceiver, 1-Func, 8-Bit, True Output, TTL, CDIP28, | Registered Bus Transceiver, 1-Func, 8-Bit, Inverted Output, TTL, PDIP28, | Registered Bus Transceiver, 1-Func, 8-Bit, Inverted Output, TTL, CDIP28, |
| Is it Rohs certified? | incompatible | incompatible | incompatible | incompatible | incompatible | incompatible | incompatible |
| Reach Compliance Code | compliant | compli | compli | compliant | compliant | compliant | compliant |
| Control type | INDEPENDENT CONTROL | INDEPENDENT CONTROL | INDEPENDENT CONTROL | INDEPENDENT CONTROL | INDEPENDENT CONTROL | INDEPENDENT CONTROL | INDEPENDENT CONTROL |
| Counting direction | BIDIRECTIONAL | BIDIRECTIONAL | BIDIRECTIONAL | BIDIRECTIONAL | BIDIRECTIONAL | BIDIRECTIONAL | BIDIRECTIONAL |
| JESD-30 code | R-PDIP-T28 | R-XDFP-F28 | R-XDFP-F28 | R-XDFP-F28 | R-XDIP-T28 | R-PDIP-T28 | R-XDIP-T28 |
| JESD-609 code | e0 | e0 | e0 | e0 | e0 | e0 | e0 |
| Logic integrated circuit type | REGISTERED BUS TRANSCEIVER | REGISTERED BUS TRANSCEIVER | REGISTERED BUS TRANSCEIVER | REGISTERED BUS TRANSCEIVER | REGISTERED BUS TRANSCEIVER | REGISTERED BUS TRANSCEIVER | REGISTERED BUS TRANSCEIVER |
| Number of digits | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Number of functions | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Number of terminals | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Maximum operating temperature | 70 °C | 125 °C | 125 °C | 125 °C | 70 °C | 70 °C | 70 °C |
| Output characteristics | 3-STATE | 3-STATE | 3-STATE | 3-STATE | 3-STATE | 3-STATE | 3-STATE |
| Output polarity | TRUE | TRUE | INVERTED | TRUE | TRUE | INVERTED | INVERTED |
| Package body material | PLASTIC/EPOXY | CERAMIC | CERAMIC | CERAMIC | CERAMIC | PLASTIC/EPOXY | CERAMIC |
| encapsulated code | DIP | DFP | DFP | DFP | DIP | DIP | DIP |
| Encapsulate equivalent code | DIP28,.6 | FL28,.4 | FL28,.4 | FL28,.4 | DIP28,.6 | DIP28,.6 | DIP28,.6 |
| Package shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package form | IN-LINE | FLATPACK | FLATPACK | FLATPACK | IN-LINE | IN-LINE | IN-LINE |
| power supply | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Certification status | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified |
| Nominal supply voltage (Vsup) | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| surface mount | NO | YES | YES | YES | NO | NO | NO |
| technology | TTL | TTL | TTL | TTL | TTL | TTL | TTL |
| Temperature level | COMMERCIAL | MILITARY | MILITARY | MILITARY | COMMERCIAL | COMMERCIAL | COMMERCIAL |
| Terminal surface | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) |
| Terminal form | THROUGH-HOLE | FLAT | FLAT | FLAT | THROUGH-HOLE | THROUGH-HOLE | THROUGH-HOLE |
| Terminal pitch | 2.54 mm | 1.27 mm | 1.27 mm | 1.27 mm | 2.54 mm | 2.54 mm | 2.54 mm |
| Terminal location | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL |
| Trigger type | POSITIVE EDGE | POSITIVE EDGE | POSITIVE EDGE | POSITIVE EDGE | POSITIVE EDGE | POSITIVE EDGE | POSITIVE EDGE |
| Is it lead-free? | Contains lead | - | - | - | Contains lead | Contains lead | Contains lead |
| Maker | Fairchild | - | - | - | Fairchild | Fairchild | Fairchild |
| package instruction | DIP, DIP28,.6 | - | - | - | DIP, DIP28,.6 | DIP, DIP28,.6 | DIP, DIP28,.6 |
| Humidity sensitivity level | 2A | - | - | - | 2A | 2A | 2A |
| Peak Reflow Temperature (Celsius) | 250 | - | - | - | 250 | 250 | 250 |
| Maximum time at peak reflow temperature | 30 | - | - | - | 30 | 30 | 30 |
| translate | N/A | - | - | - | N/A | N/A | N/A |
| Base Number Matches | - | 1 | 1 | 1 | 1 | 1 | 1 |