Real Time Clock, Volatile, 1 Timer(s), CMOS, PDIP24,
| Parameter Name | Attribute value |
| Is it Rohs certified? | incompatible |
| package instruction | DIP, DIP24,.6 |
| Reach Compliance Code | unknown |
| Other features | SELECTABLE INTEL/MOTOROLA TIMING; DAYLIGHT SAVING OPTION; RAM CLEAR I/P |
| External data bus width | 8 |
| Information access methods | PARALLEL, MUXED BUS |
| interrupt capability | Y |
| JESD-30 code | R-PDIP-T24 |
| JESD-609 code | e0 |
| Number of terminals | 24 |
| Number of timers | 1 |
| On-chip data RAM width | 8 |
| Maximum operating temperature | 70 °C |
| Minimum operating temperature | |
| Maximum output clock frequency | 0.032768 MHz |
| Package body material | PLASTIC/EPOXY |
| encapsulated code | DIP |
| Encapsulate equivalent code | DIP24,.6 |
| Package shape | RECTANGULAR |
| Package form | IN-LINE |
| Peak Reflow Temperature (Celsius) | NOT SPECIFIED |
| power supply | 5 V |
| Certification status | Not Qualified |
| RAM (number of words) | 242 |
| Maximum slew rate | 15 mA |
| Maximum supply voltage | 5.5 V |
| Minimum supply voltage | 4.5 V |
| Nominal supply voltage | 5 V |
| surface mount | NO |
| technology | CMOS |
| Temperature level | COMMERCIAL |
| Terminal surface | Tin/Lead (Sn/Pb) |
| Terminal form | THROUGH-HOLE |
| Terminal pitch | 2.54 mm |
| Terminal location | DUAL |
| shortest time | SECONDS |
| Maximum time at peak reflow temperature | NOT SPECIFIED |
| Volatile | YES |
| uPs/uCs/peripheral integrated circuit type | TIMER, REAL TIME CLOCK |
| Base Number Matches | 1 |
| BQ3285EP | BQ3285LS | BQ3285LSSN | BQ3285ES | BQ3285LQ | BQ3285EQ | BQ3285ESSN | BQ3285LP | |
|---|---|---|---|---|---|---|---|---|
| Description | Real Time Clock, Volatile, 1 Timer(s), CMOS, PDIP24, | Real Time Clock, Volatile, 1 Timer(s), CMOS, PDSO24, | Real Time Clock, Volatile, 1 Timer(s), CMOS, PDSO24, SSOP-24 | Real Time Clock, Volatile, 1 Timer(s), CMOS, PDSO24, | Real Time Clock, Volatile, 1 Timer(s), CMOS, PQCC28, | Real Time Clock, Volatile, 1 Timer(s), CMOS, PQCC28, | Real Time Clock, Volatile, 1 Timer(s), CMOS, PDSO24, SSOP-24 | Real Time Clock, Volatile, 1 Timer(s), CMOS, PDIP24, |
| Is it Rohs certified? | incompatible | incompatible | incompatible | incompatible | incompatible | incompatible | incompatible | incompatible |
| Reach Compliance Code | unknown | unknown | unknown | unknown | unknown | unknown | unknown | unknown |
| External data bus width | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Information access methods | PARALLEL, MUXED BUS | PARALLEL, MUXED BUS | PARALLEL, MUXED BUS | PARALLEL, MUXED BUS | PARALLEL, MUXED BUS | PARALLEL, MUXED BUS | PARALLEL, MUXED BUS | PARALLEL, MUXED BUS |
| interrupt capability | Y | Y | Y | Y | Y | Y | Y | Y |
| JESD-30 code | R-PDIP-T24 | R-PDSO-G24 | R-PDSO-G24 | R-PDSO-G24 | S-PQCC-J28 | S-PQCC-J28 | R-PDSO-G24 | R-PDIP-T24 |
| JESD-609 code | e0 | e0 | e0 | e0 | e0 | e0 | e0 | e0 |
| Number of terminals | 24 | 24 | 24 | 24 | 28 | 28 | 24 | 24 |
| Number of timers | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Maximum operating temperature | 70 °C | 70 °C | 85 °C | 70 °C | 70 °C | 70 °C | 85 °C | 70 °C |
| Package body material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| encapsulated code | DIP | SOP | SSOP | SOP | QCCJ | QCCJ | SSOP | DIP |
| Encapsulate equivalent code | DIP24,.6 | SOP24,.4 | SSOP24,.24 | SOP24,.4 | LDCC28,.5SQ | LDCC28,.5SQ | SSOP24,.24 | DIP24,.6 |
| Package shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | SQUARE | SQUARE | RECTANGULAR | RECTANGULAR |
| Package form | IN-LINE | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | CHIP CARRIER | CHIP CARRIER | SMALL OUTLINE | IN-LINE |
| power supply | 5 V | 3.15 V | 3.15 V | 5 V | 3.15 V | 5 V | 5 V | 3.15 V |
| Certification status | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified |
| Maximum supply voltage | 5.5 V | 3.6 V | 3.6 V | 5.5 V | 3.6 V | 5.5 V | 5.5 V | 3.6 V |
| Minimum supply voltage | 4.5 V | 2.7 V | 2.7 V | 4.5 V | 2.7 V | 4.5 V | 4.5 V | 2.7 V |
| Nominal supply voltage | 5 V | 3.15 V | 3.15 V | 5 V | 3.15 V | 5 V | 5 V | 3.15 V |
| surface mount | NO | YES | YES | YES | YES | YES | YES | NO |
| technology | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS |
| Temperature level | COMMERCIAL | COMMERCIAL | INDUSTRIAL | COMMERCIAL | COMMERCIAL | COMMERCIAL | INDUSTRIAL | 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) | Tin/Lead (Sn/Pb) |
| Terminal form | THROUGH-HOLE | GULL WING | GULL WING | GULL WING | J BEND | J BEND | GULL WING | THROUGH-HOLE |
| Terminal pitch | 2.54 mm | 1.27 mm | 0.635 mm | 1.27 mm | 1.27 mm | 1.27 mm | 0.635 mm | 2.54 mm |
| Terminal location | DUAL | DUAL | DUAL | DUAL | QUAD | QUAD | DUAL | DUAL |
| shortest time | SECONDS | SECONDS | SECONDS | SECONDS | SECONDS | SECONDS | SECONDS | SECONDS |
| Volatile | YES | YES | YES | YES | YES | YES | YES | YES |
| uPs/uCs/peripheral integrated circuit type | TIMER, REAL TIME CLOCK | TIMER, REAL TIME CLOCK | TIMER, REAL TIME CLOCK | TIMER, REAL TIME CLOCK | TIMER, REAL TIME CLOCK | TIMER, REAL TIME CLOCK | TIMER, REAL TIME CLOCK | TIMER, REAL TIME CLOCK |
| Base Number Matches | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| On-chip data RAM width | 8 | 8 | - | 8 | 8 | 8 | - | 8 |
| Maximum output clock frequency | 0.032768 MHz | 0.032768 MHz | - | 0.032768 MHz | 0.032768 MHz | 0.032768 MHz | - | 0.032768 MHz |
| Peak Reflow Temperature (Celsius) | NOT SPECIFIED | NOT SPECIFIED | - | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED | - | NOT SPECIFIED |
| RAM (number of words) | 242 | 242 | - | 242 | 242 | 242 | - | 242 |
| Maximum slew rate | 15 mA | 9 mA | - | 15 mA | 9 mA | 15 mA | - | 9 mA |
| Maximum time at peak reflow temperature | NOT SPECIFIED | NOT SPECIFIED | - | NOT SPECIFIED | NOT SPECIFIED | NOT SPECIFIED | - | NOT SPECIFIED |
| Maker | - | Benchmarq Microelectronics Inc | Benchmarq Microelectronics Inc | Benchmarq Microelectronics Inc | Benchmarq Microelectronics Inc | Benchmarq Microelectronics Inc | Benchmarq Microelectronics Inc | Benchmarq Microelectronics Inc |
| Part Number | Manufacturer | Description |
|---|---|---|
| DS12887A | Rochester Electronics | 1 TIMER(S), REAL TIME CLOCK, PDIP24, ENCAPSULATED, DIP-24 |
| DS12887A+ | Maxim(美信半导体) | Programmable Timer, Non-Volatile, 1 Timer(s), CMOS, PDIP24, ROHS COMPLIANT, ENCAPSULATED, DIP-24 |
| DS12887+ | Maxim(美信半导体) | Programmable Timer, Non-Volatile, 1 Timer(s), CMOS, PDIP24, ROHS COMPLIANT, ENCAPSULATED, DIP-24 |
| BQ3285EP | Rochester Electronics | 1 TIMER(S), REAL TIME CLOCK, PDIP24, 0.600 INCH, GREEN, PLASTIC, DIP-24 |
| DS12887 | Maxim(美信半导体) | Real Time Clock |
| M48T86PC1 | ST(意法半导体) | Real Time Clock 5 Volt PC Drop-In |
| BQ3287MT-I | Texas Instruments(德州仪器) | Real Time Clock RTC MODULE 114x8 NV |
| BQ3287AMT-I | Texas Instruments(德州仪器) | Real Time Clock w/114x8 NVSRAM RAM Clear Input |
| BQ3287AMT | Texas Instruments(德州仪器) | 1 TIMER(S), REAL TIME CLOCK, PDIP24 |
| DS12B887 | DALLAS | Real Time Clock |
| BQ4285EP | Texas Instruments(德州仪器) | Real Time Clock w/114x8 NVSRAM & NVSRAM Control |
| DS1285 | Maxim(美信半导体) | Timer or RTC, Volatile, CMOS, PDIP24, |
| BQ4847Y-MT | Texas Instruments(德州仪器) | 0 TIMER(S), REAL TIME CLOCK, DMA28, MODULE, DIP-28 |
| BQ3285S-SB2 | Texas Instruments(德州仪器) | RTC IC with 114x8 NVSRAM 24-SOIC 0 to 70 |
| BQ3285ES | Texas Instruments(德州仪器) | RTC IC with 242x8 NVSRAM Alarm Wake-up 24-SOIC 0 to 70 |
| MC146818P | NXP(恩智浦) | 1 TIMER(S), REAL TIME CLOCK, PDIP24, PLASTIC, DIP-24 |
| BQ3285ESS | Rochester Electronics | 1 TIMER(S), REAL TIME CLOCK, PDSO24, 0.150 INCH, GREEN, PLASTIC, SSOP-24 |
| BQ3285ESSTR | Rochester Electronics | 1 TIMER(S), REAL TIME CLOCK, PDSO24, 0.150 INCH, GREEN, PLASTIC, SSOP-24 |
| BQ3285LSS | Rochester Electronics | 1 TIMER(S), REAL TIME CLOCK, PDSO24 |
| DS1287 | DALLAS | Real Time Clock |
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