TL7770-12CDWR ,12 TL7770-5, TL7770-12 DUAL POWER-SUPPLY SUPERVISORS SLVS019F – OCTOBER 1987 – REVISED JULY 1999DW OR ..
TL7770-5CDW ,12 TL7770-5, TL7770-12 DUAL POWER-SUPPLY SUPERVISORS SLVS019F – OCTOBER 1987 – REVISED JULY 1999DW OR ..
TL7770-5CDW ,12 TL7770-5, TL7770-12 DUAL POWER-SUPPLY SUPERVISORS SLVS019F – OCTOBER 1987 – REVISED JULY 1999DW OR ..
TL7770-5CDWR ,12maximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage, V ..
TL7770-5CN ,12maximum ratings over operating free-air temperature range (unless otherwise noted)Supply voltage, V ..
TL7770-5CN ,12block diagram (each channel)VCCVref65 m A (TYP)CTRESETRESETVSUR1R2RESINVSO1 VSU 2 VSUDEVICE SCR DRI ..
TMBYV10-40FILM ,SMALL SIGNAL SCHOTTKY DIODESABSOLUTE MAXIMUM RATINGS Symbol Parameter Value UnitV Repetitive Peak Reverse Voltage 40 VRRMI Aver ..
TMBYV10-60FILM ,SMALL SIGNAL SCHOTTKY DIODEABSOLUTE MAXIMUM RATINGS Symbol Parameter Value UnitV Repetitive Peak Reverse Voltage 60 VRRMI Aver ..
TMC1103KLC20 ,20MSPS Triple Video A/D Converter with ClampsApplications• 8-bit resolution • Video digitizing (composite and Y-C)• 50 Msps conversion rate • VG ..
TMC1103KLC40 ,40MSPS ADC Triple Video A/D Converter with Clamps TMC1103Triple Video A/D Converter with Clamps8-Bit, 50Msps
TMC1175AM7C40 ,40MSPS 8-Bit Video A/D ConverterFunctional DescriptionDDAThe TMC1175A 8-bit A/D converter uses a two-step archi-tecture to perform ..
TMC1175AR3C30 ,Video A/D ConveterFunctional Description , TDDA
tt.., “11“ T'TC A " ’1'1( 0 1Ur A In nnnunv-har "an: n Nun pinnr Q ..
TL7770-12CDWR
12
Wide Supply-Voltage Range... 3.5 V to 18 V Precision Overvoltage and Undervoltage
Sensing 250-mA Peak Output Current for Driving
SCR Gates 2-mA Active-Low SCR Gate Drive for
False-Trigger Protection Temperature-Compensated Voltage
Reference True and Complementary Reset Outputs Externally Adjustable Output Pulse
Duration
descriptionThe TL7770 is an integrated-circuit system supervisor designed for use as a reset controller in microcomputer
and microprocessor power-supply systems. This device contains two independent supply-voltage supervisors
that monitor the supplies for overvoltage and undervoltage conditions at the VSO and VSU terminals,
respectively. When VCC attains the minimum voltage of 1 V during power up, the RESET output becomes active
(low). As VCC approaches 3.5 V, the time-delay function activates, latching RESET and RESET active (high and
low, respectively) for a time delay (td) after system voltages have achieved normal levels. Above VCC = 3.5 V,
taking RESIN low activates the time-delay function during normal system-voltage levels. T o ensure that the
microcomputer system has reset, the outputs remain active until the voltage at VSU exceeds the threshold
value, VIT+, for a time delay, which is determined by an external timing capacitor such that:- 20- 103- capacitance
where td is in seconds and capacitance is in farads.
The overvoltage-detection circuit is programmable for a wide range of designs. During an overvoltage condition,
an internal silicon-controlled rectifier (SCR) is triggered, providing 250-mA peak instantaneous current and
25-mA continuous current to the SCR gate drive terminal, which can drive an external high-current SCR gate
or an overvoltage-warning circuit.
The TL7770C series is characterized for operation from 0°C to 70°C. The TL7770I series is characterized for
operation from –40°C to 85°C.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1RESET
1RESET
1VSU
1VSO
1SCR DRIVE
GND
2RESET
2RESET
2VSU
2VSO
2SCR DRIVE
