Datasheet

TC642B/TC647B
DS21756C-page 4  2002-2013 Microchip Technology Inc.
TEMPERATURE SPECIFICATIONS
SENSE Input
SENSE Input Threshold Voltage with
Respect to GND
V
TH(SENSE)
50 70 90 mV
Blanking time to ignore pulse due to
V
OUT
turn-on
t
BLANK
—3.0—µsec
FAULT
Output
Output Low Voltage V
OL
—— 0.3VI
OL
= 2.5 mA
Missing Pulse Detector Timer t
MP
— 32/f — sec Note 2
Start-Up Timer t
STARTUP
— 32/f — sec Note 2
Diagnostic Timer t
DIAG
— 3/f — sec
Electrical Characteristics: Unless otherwise noted, all parameters apply at V
DD
= 3.0V to 5.5V
Parameters Symbol Min Typ Max Units Conditions
Temperature Ranges:
Specified Temperature Range T
A
-40 — +85 °C
Operating Temperature Range T
A
-40 — +125 °C
Storage Temperature Range T
A
-65 — +150 °C
Thermal Package Resistances:
Thermal Package Resistance, 8-Pin MSOP

JA
—
200
—
°C/W
Thermal Package Resistance, 8-Pin SOIC

JA
—
155
—
°C/W
Thermal Package Resistance, 8-Pin PDIP

JA
—
125
—
°C/W
ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Specifications: Unless otherwise specified, all limits are specified for -40°C < T
A
< +85°C, V
DD
= 3.0V to 5.5V.
Parameters Sym Min Typ Max Units Conditions
Note 1: Ensured by design, tested during characterization.
2: For V
DD
< 3.7V, t
STARTUP
and t
MP
timers are typically 13/f.