TLC770X Datasheet, PDF (4/27 Pages) Texas Instruments – BiCMOS SUPPLY VOLTAGE SUPERVISORS

Figures
1. RESET Circuits ....................................................................................................................................................... 5
2. Principle circuit of a Line (Mains) Power Supply................................................................................................. 7
3. Voltage waveforms in a line operated power supply .......................................................................................... 7
4. The effect of bouncing switch contacts on the switch-on time of a battery-operated power supply ............ 8
5. Functional Circuit Diagram.................................................................................................................................... 9
6. Logic Symbol .......................................................................................................................................................... 9
7. Timing Diagram .................................................................................................................................................... 11
8. Dependence of the delay time on the capacitance C_t ....................................................................................... 12
9. Truth Table............................................................................................................................................................ 13
10. CMOS input .......................................................................................................................................................... 13
11. Dependence of the lateral current at the CONTROL input on the input voltage (V_DD=5V)........................... 14
12. Dependence of the minimum pulse width at the SENSE input on the reduction of the supply
voltage (V_DD=5V) ....................................................................................................................................................... 15
13. The signal at the SENSE input for determining the minimum pulse width t_p ................................................ 15
14. Delay of the charging process with very fast rise times of the supply voltage (The time axis is not
to scale)...................................................................................................................................................................... 16
15. RESET procedure with the TMS370 ................................................................................................................... 17
16. Simple voltage monitoring circuit with the TLC7705 ....................................................................................... 18
17. Voltage monitoring circuit for a microcomputer system with the TLC7701 .................................................. 19
18. Monitoring of a system with two different supply voltages............................................................................. 20
19. The monitoring of a positive and negative supply voltage ............................................................................. 21
20. Delay circuit in an audio amplifier ..................................................................................................................... 22
21. Voltage monitoring in a battery backed memory system ................................................................................ 23
22. Current peaks on the supply line when switching the RESET output ............................................................ 24
23. Suggested layout for a circuit board with the TLC7701................................................................................... 25
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