CD4045B
- Very low operating dissipation . . . . . <1 mW (typ.) @ VDD = 5 V, f = 1 MHz
- Output drivers with sink or source capability . . . . . 7 mA (typ.) @ VDD = 5 V
- Medium speed (typ.) . . . f = 25 MHz @ VDD = 10 V
- 100% tested for quiescent current at 20 V
- 5-V, 10-V, and 15-V parametric ratings
- Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
- Applications
- Digital equipment in which ultra-low dissipation and/or operation using a battery source is required.
- Accurate timing from a crystal oscillator for timing applications such as wall clocks, table clocks, automobile clocks, and digital timing references in any circuit requiring accurately timed outputs at various intervals in the counting sequence.
- Driving miniature synchronous motors, stepping motors, or external bipolar transistors in push-pull fashion.
CD4045B is a timing circuit consisting of 21 counter stages, two output-shaping flip-flops, two inverter output drivers, and input inverters for use in a crystal oscillator. The CD4045B configuration provides 21 flip-flop counting stages, and two flip-flops for shaping the output waveform for a 3.125% duty cycle. Push-pull operation is provided by the inverter output drivers.
The first inverter is intended for use as a crystal oscillator/amplifier. However, it may be used as a normal logic inverter if desired. A crystal oscillator circuit can be made less sensitive to voltage-supply variations by the user of source resistors. In this device, the sources of the p and n transistors have been brought out to package terminals. If external resistors are not required, the sources must be shorted to their respective substrates (Sp to VDD, Sn to VSS). See Fig. 1. The first inverter in conjunction with an outboard inverter, such as 1/6 CD4069, and RX, CX, and RS can also be used to construct an RC oscillator. The following data is supplied as a guide in the selection of values for RX, RS, and CX used in Fig. 11:
- RX max = 10 M and CX = 50 pF
- CX max = 25 µF with RS = 560 k
The CD4045B types are supplied in 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline package (NSR suffix), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).
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技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | CD4045B TYPES 数据表 (Rev. C) | 2003年 6月 27日 | |||
选择指南 | Logic Guide (Rev. AB) | 2017年 6月 12日 | ||||
应用手册 | Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) | 2015年 12月 2日 | ||||
选择指南 | 逻辑器件指南 2014 (Rev. AA) | 最新英语版本 (Rev.AB) | 2014年 11月 17日 | |||
用户指南 | LOGIC Pocket Data Book (Rev. B) | 2007年 1月 16日 | ||||
应用手册 | Semiconductor Packing Material Electrostatic Discharge (ESD) Protection | 2004年 7月 8日 | ||||
用户指南 | Signal Switch Data Book (Rev. A) | 2003年 11月 14日 | ||||
应用手册 | Understanding Buffered and Unbuffered CD4xxxB Series Device Characteristics | 2001年 12月 3日 |
设计和开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
14-24-LOGIC-EVM — 采用 14 引脚至 24 引脚 D、DB、DGV、DW、DYY、NS 和 PW 封装的逻辑产品通用评估模块
14-24-LOGIC-EVM 评估模块 (EVM) 旨在支持采用 14 引脚至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。
封装 | 引脚 | 下载 |
---|---|---|
PDIP (N) | 16 | 查看选项 |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点