CD14538B - CMOS 双精度单稳态多谐振荡器 (125 C 运行)

CD14538B是TI德州仪器公司的一款单稳多频振荡器产品，CD14538B是CMOS 双精度单稳态多谐振荡器 (125 C 运行)，本站介绍了CD14538B的封装应用图解、特点和优点、功能等，并给出了与CD14538B相关的TI元器件型号供参考。

CD14538B - CMOS 双精度单稳态多谐振荡器 (125 C 运行) - 单稳多频振荡器 - 特殊逻辑 - 德州仪器

产品描述

CD14538B dual precision monostable multivibrator provides stable retriggerable/resettable one-shot operation for any fixed-voltage timing application.

An external resistor (RX) and an external capacitor (CX) control the timing and accuracy for the circuit. Adjustment of RX and CX provides a wide range of output pulse widths from the Q and Q\ terminals. The time delay from trigger input to output transition (trigger propagation delay) and the time delay from reset input to output transition (reset propagation delay) are independent of RX and CX. Precision control of output pulse widths is achieved through linear CMOS techniques.

Leading-edge-triggering (+TR) and trailing-edge-triggering (-TR) inputs are provided for triggering from either edge of an input pulse. An unused +TR input should be tied to VSS. An unused -TR input should be tied to VDD. A RESET (on low level) is provided for immediate termination of the output pulse or to prevent output pulses when power is turned on. An unused RESET input should be tied to VDD. However, if an entire section of the CD14538B is not used, its inputs must be tied to either VDD or VSS. See Table 1.

In normal operation the circuit retriggers (extends the output pulse one period) on the application of each new trigger pulse. For operation in the non-retriggerable mode, Q\ is connected to -TR when leading-edge triggering (+TR) is used or Q is connected to +TR when trailing-edge triggering (-TR) is used. The time period (T) for this multivibrator can be calculated by: T = RXCX.

The minimum value of external resistance, RX, is 4 K. The minimum and maximum values of external capacitance, CX are 0 pF and 100µF, respectively.

The CD14538B is interchangeable with type MC14538 and is similar to and pin-compatible with the CD4098B* and CD4538B. It can replace the CD4538B which type is not recommended for new designs.

The CD14538B types are supplied in 16-lead hermetic dual-in-line ceramic packages (F3A suffix), 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (M, M96, MT, and NSR suffixes), and 16-lead thin shrink small-outline packages (PW and PWR suffixes).

产品特性

Retriggerable/resettable capability
Trigger and reset propagation delays independent of RX, CX
Triggering from leading or trailing edge
Q and Q\ buffered outputs available
Separate resets
Replaces CD4538B Type
Wide range of output-pulse widths
Schmitt-trigger input allows unlimited rise and fall times on +TR and -TR inputs
100% tested for maximum quiescent current at 20 V
Maximum input current of 1 µA at 18 V over full package-temperature range; 100 nA at 18 V and 25°C
Noise margin (full package-temperature range):
- 1 V at VDD = 5 V
- 2 V at VDD = 10 V
- 2.5 V at VDD = 15 V
5-V, 10-V, and 15-V parametric ratings
Standardized, symmetrical output characteristics
Meets all requirements of JEDEC Tentative Standard No. 13B, "Standard Specifications for Description of 'B' Series CMOS Devices"
Applications:
- Pulse delay and timing
- Pulse shaping

*T = 0.5 RXCX for CX 1000 pF #T = RXCX; CXmin = 5000 pF Data sheet acquired from Harris Semiconductor

下面可能是您感兴趣的TI德州仪器公司单稳多频振荡器元器件

TI公司产品现货专家，订购TI公司产品不限最低起订量，TI芯片大陆现货即时发货，香港库存3-5天发货，海外库存7-10天发货

寻找全球TI代理商现货货源 - TI公司（德州仪器）电子元件在线订购