Datasheet

2
3
1
RESET
V
DD
GND
TLV803
DBZPackage
(TopView)
2
3
1
V
DD
GND
RESET
TLV863
DBZPackage
(TopView)
3.3V
TLV803S
DSP/FPGA/ASIC
GND
GND
RESET
RESET
V
DD
3.3-VLDO
GND
OUT
IN
5V
V
DD
TLV803M, TLV803R
TLV803S, TLV803Z
TLV863M
www.ti.com SBVS157B –APRIL 2011– REVISED AUGUST 2011
3-Pin Voltage Supervisors
with Active-Low, Open-Drain Reset
Check for Samples: TLV803M, TLV803R, TLV803S, TLV803Z, TLV863M
1
FEATURES
DESCRIPTION
The TLV803 family of supervisory circuits provides
2
• 3-Pin SOT23 Package
circuit initialization and timing supervision, primarily
• Supply Current: 9 µA (Typical)
for DSPs and processor-based systems.
• Precision Supply Voltage Monitor:
The TLV803 and TLV863 are functionally equivalent.
2.5 V, 3 V, 3.3 V, 5 V
The TLV863 provides an alternate pinout of the
• Power-On Reset Generator with
TLV803.
Fixed Delay Time of 200 ms
During power-on, RESET asserts when the supply
• Pin-for-Pin Compatible with MAX803
voltage (V
DD
) becomes greater than 1.1 V.
• Temperature Range: –40°C to +125°C Thereafter, the supervisory circuit monitors V
DD
and
keeps RESET active as long as V
DD
remains below
• Open-Drain, RESET Output
the threshold voltage V
IT
. An internal timer delays the
return of the output to the inactive state (high) to
APPLICATIONS
ensure proper system reset. The delay time (t
d(typ)
=
• DSPs, Microcontrollers, and Microprocessors
200 ms) starts after V
DD
has risen above the
threshold voltage, V
IT
. When the supply voltage drops
• Wireless Communication Systems
below the V
IT
threshold voltage, the output becomes
• Portable/Battery-Powered Equipment
active (low) again. All the devices in this family have
• Programmable Controls
a fixed sense-threshold voltage (V
IT
) set by an
internal voltage divider.
• Intelligent Instruments
• Industrial Equipment
The product spectrum is designed for supply voltages
of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are
• Notebook and Desktop Computers
available in a 3-pin SOT-23 package. The TLV803
• Automotive Systems
devices are characterized for operation over a
temperature range of –40°C to +125°C.
DEVICE FAMILY COMPARISON
DEVICE FUNCTION
TLV803 Open-Drain, RESET Output
TYPICAL APPLICATION
TLV809 Push-Pull, RESET Output
TLV810 Push-Pull, RESET Output
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.