BQ4845S-A4 vs BQ4845YS-A4NTR 对比
详细并排对比 BQ4845S-A4 出自 Texas Instruments 和 BQ4845YS-A4NTR 出自 Texas Instruments。对比关键规格、电气参数、封装、生命周期状态、价格和供货情况，以确定最适合您设计需求的元器件。
Texas Instruments
BQ4845S-A4 - Parallel RTC with CPU Supervisor | Texas Instruments
BQ4845S-A4 ✓ 量产中Texas Instruments
BQ4845YS-A4NTR - Parallel RTC with CPU Supervisor | Texas Instruments (Tape & Reel)
BQ4845YS-A4NTR ✓ 量产中规格对比
| 参数 | BQ4845S-A4 | BQ4845YS-A4NTR |
|---|---|---|
| 品牌 | Texas Instruments | Texas Instruments |
| 分类 | Clock & Timing | Clock & Timing |
| 生命周期状态 | 有效 | 有效 |
| Product Type | Parallel real-time clock with CPU supervisor | Parallel real-time clock and clock/calendar with CPU supervisor |
| Timekeeping Format | BCD, seconds through years | — |
| Crystal Frequency | 32.768 kHz | 32.768 kHz |
| Backup Battery | 3 V | — |
| Backup Clock Current | Less than 500 nA | — |
| 接口 | Parallel | 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 | — |
| 封装 | 28-pin SOIC | 28-pin SOIC, 0.295 inch width, 7.50 mm |
| Package Body Width | 7.50 mm | — |
| Package Length | 0.295 inch | — |
| 安装类型 | Surface mount | Surface mount |
| Application Categories | Industrial control systems, point-of-sale terminals, data loggers, computers, fax machines, copiers | — |
| Current Price | [DATA_NEEDED: current distributor unit price] | — |
| 工作温度范围 | [DATA_NEEDED: operating temperature range] | — |
| RoHS 状态 | [DATA_NEEDED: RoHS status] | [DATA_NEEDED: RoHS status] |
| REACH Status | [DATA_NEEDED: REACH status] | [DATA_NEEDED: REACH status] |
| MPN | — | BQ4845YS-A4NTR |
| Manufacturer | — | Texas Instruments |
| Battery Voltage Range | — | 2.3 V to 4 V |
| System Supply Condition | — | 4.5 V to 5.5 V for the stated timekeeping-current condition |
| Maximum Timekeeping Current | — | 1.5 mA at 4.5 V to 5.5 V |
| Backup Clock Operation Current | — | Less than 500 nA |
| Clock Format | — | BCD |
| Calendar Features | — | Leap year and daylight savings support |
| Supervisory Features | — | CPU supervisor and watchdog timer |
| Reset Features | — | Microprocessor reset and power-fail-related control functions |
| Nonvolatile Support | — | Battery-backup switchover and nonvolatile control for external SRAM |
| Backup Source | — | 3 V backup battery connection |
| 工作温度 | — | [DATA_NEEDED: operating temperature range] |
| Pinout | — | 28-pin parallel real-time clock and supervisor pinout per manufacturer datasheet |