CD40109B-Q1中文资料汽车类 CMOS 四路低向高电压位转换器（20V 额定电压）数据手册TI规格书

描述 Description

CD40109B contains four low-to-high-voltage level-shifting circuits. Each circuit will shift a low-voltage digital-logic input signal (A, B, C, D) with logical 1 = VCC and logical 0 = VSS to a high-voltage output signal (E, F, G, H) with logical 1 = VDD and logical 0 = VSS.
The RCA-CD40109, unlike other low-to-high level-shifting circuits, does not require the presence of the high-voltage supply (VDD) before the application of either the low-voltage supply (VCC) or the input signals. There are no restrictions on the sequence of application of VDD, VCC, or the input signals. In addition, with one exception there are no restrictions on the relative magnitudes of the supply voltages or input signals within the device maximum ratings, provided that the input signal swings between VSS and at least 0.7 VCC; VCC may exceed VDD, and input signals may exceed VCC and VDD. When operated in the mode VCC > VDD, the CD40109 will operate as a high-to-low level-shifter.
The CD40109 also features individual three-state output capability. A low level on any of the separately enabled three-state output controls produces a high-impedance state in the corresponding output.

特性 Features

• Qualified for Automotive Applications
• Input Signals can Exceed Both VCC and VDD
• Three-State Outputs With Separate Enable Controls
• 100% Tested for Quiescent Current at 20 V
• 100 nA at 18 V and 25°C
• 2 V at VCC = 10 V, VDD = 15 V
• Meets All Requirements of JEDEC Tentative Standard No. 13B, \"Standard specifications for Description of ’B’ Series CMOS Devices\"
• APPLICATIONS
• Isolation of Logic Subsystem Using Separate Power Supplies from Supply Sequencing, Supply Loss, and Supply Regulation Considerations