BQ4845S-A4NTRG4 vs BQ4845S-A4 Comparison
Detailed side-by-side comparison of BQ4845S-A4NTRG4 by Texas Instruments and BQ4845S-A4 by Texas Instruments. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Texas Instruments
BQ4845S-A4 - Parallel RTC with CPU Supervisor | Texas Instruments
BQ4845S-A4 ✓ ActiveSpecification Comparison
| Parameter | BQ4845S-A4NTRG4 | BQ4845S-A4 |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Category | Clock & Timing | Clock & Timing |
| Lifecycle Status | Active | Active |
| Product Type | Parallel real-time clock and calendar with CPU supervisor | Parallel real-time clock with CPU supervisor |
| Main Supply Voltage Range | 4.75 V to 5.5 V | — |
| Backup Battery Voltage Range | 2.3 V to 4 V | — |
| Crystal Frequency | 32.768 kHz | 32.768 kHz |
| Clock Format | BCD | — |
| Date Format | BCD | — |
| Host Interface | Parallel | — |
| Package | 28-pin SOIC, 7.50 mm width | 28-pin SOIC |
| Mounting Type | Surface mount | Surface mount |
| Operating Features | Alarm, daylight-saving time, leap year, watchdog timer, processor reset, interrupt, and battery-low warning | — |
| Calendar Range | 100 years | — |
| Backup Clock Operating Current | Less than 500 nA | — |
| Watchdog Input Bias | Approximately 1.6 V through a 100 kilohm-equivalent internal resistor network | — |
| Battery Voltage Output | VOUT output available | — |
| External SRAM Control | CEOUT write-protection output available | — |
| Power-Fail Behavior | Watchdog disabled and WDI disconnected from the internal resistor network below the power-fail threshold | — |
| RoHS Status | [DATA_NEEDED: RoHS status] | [DATA_NEEDED: RoHS status] |
| REACH Status | [DATA_NEEDED: REACH status] | [DATA_NEEDED: REACH status] |
| AEC-Q100 Qualification | [DATA_NEEDED: AEC-Q100 qualification] | — |
| Operating Temperature Range | [DATA_NEEDED: operating temperature range] | [DATA_NEEDED: operating temperature range] |
| Timekeeping Format | — | BCD, seconds through years |
| Backup Battery | — | 3 V |
| Backup Clock Current | — | Less than 500 nA |
| Interface | — | Parallel |
| Integrated Functions | — | RTC, CPU supervisor, watchdog timer, reset, interrupts, battery-low warning |
| Nonvolatile SRAM Control | — | External SRAM write protection and switchover control |
| Battery-Backup Switchover | — | On-chip |
| CEOUT Function | — | Conditional chip enable output |
| VOUT Function | — | Battery voltage output |
| Package Body Width | — | 7.50 mm |
| Package Length | — | 0.295 inch |
| Application Categories | — | Industrial control systems, point-of-sale terminals, data loggers, computers, fax machines, copiers |
| Current Price | — | [DATA_NEEDED: current distributor unit price] |