Microsemi Corporation MC34164-3DM, MC34164-3LP, MC33164-3DM, MC33164-3LP Datasheet
MC33164-3/MC34164-3
0
3V U
T HE I NFINITE P OWER OF I NNOVATION
DESCRIPTION
The MC33164-3 and MC34164-3 are
undervoltage sensing circuits designed
specifically for use as reset controllers in
microprocessor-based systems. They
offer the designer an economical, space
efficient solution for low supply voltage
detection when used in combination
with a single pull-up resistor. Adding
one capacitor offers the functionality of
a programmable delay time after power
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
PRODUCT HIGHLIGHT
RESET OUTPUT VS. INPUT VOLTAGE
10
3
returns. The MC33164-3 and MC34164-3
consist of a temperature stable reference
comparator with hysteresis, high-current
clamping diode and an open collector
output stage capable of sinking more
than 6mA over the full temperature
range. The MC33164-3 and MC34164-3's
RESET output is specified to be fully
functional at V
Highlight below.
≥ 1V. See Product
IN
NDERVOLTAGE SENSING CIRCUIT
P RODUCTION DATA SHEET
KEY FEATURES
■ Monitors +3.3V Supplies
(VT = 2.7V Typ)
■ Outputs Fully Defined At V
Product Highlight)
■ Ultra-Low Supply Current (13µA Max.)
! Temperature Compensated ICC For
Extremely Stable Current Consumption
! µP Reset Delay Programmable With 1
External Resistor And Capacitor
! Comparator Hysteresis Prevents Output
Oscillation (60mV Typ.)
! Electrically Compatible With Motorola
MC34164-3
! Pin-to-Pin Compatible With Motorola
MC34064 / MC34164
APPLICATIONS
■■
■ All Microprocessor Or Microcontroller
■■
Designs Using 3V/3.3V Supplies
■■
■ Simple 3V/3.3V Undervoltage Detection
■■
IN
≥≥
≥ 1V (See
≥≥
2
1
RESET Output Voltage - (V)
Undefined
0
0
1231
Input Voltage - (V)
-40 to 85 MC33164-3DM MC33164-3LP
Note: All surface-mount packages are available in Tape & Reel.
PACKAGE ORDER INFORMATION
T
(°C)
A
Plastic SOIC
DM
8-pin
Plastic TO-92
LP
3-pin
0 to 70 MC34164-3DM MC34164-3LP
Append the letter "T" to part number. (i.e. MC34164-3DMT)
Copyright © 1999
Rev. 1.2 6/99
L INF INITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1
PRODUCT DATABOOK 1996/1997
MC33164-3/MC34164-3
3V U
NDERVOLTAGE SENSING CIRCUIT
P RODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN) ............................................................................... -1V to 12V
RESET Output Voltage (V
Output Sink Current (I
Clamp Diode Forward Current (IF), Pin 1 to pin 2............................................... 100mA
Operating Junction Temperature
Plastic (DM, LP - Packages) .................................................................................. 150°C
Storage Temperature Range ...................................................................... -65°C to 150°C
Lead Temperature (Soldering, 10 seconds) ............................................................. 300°C
Note 1. Values beyond which damage may occur. All voltages are specified with respect to
ground, and all currents are positive into the specified terminal.
DM PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
LP PACKAGE:
THERMAL RESISTANCE-JUNCTION TO AMBIENT,
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board system.
All of the above assume no ambient airflow
) ..................................................................................... 12V
OUT
) ............................................................ Internally Limited (mA)
OL
THERMAL DATA
θθ
θ
θθ
JA
θθ
θ
θθ
JA
165°C/W
156°C/W
PACKAGE PIN OUTS
RESET
N.C.
GROUND
1 8
V
2 7
IN
3 6
4 5
DM PACKAGE
(Top View)
LP PACKAGE
(Top View)
N.C.
N.C.
N.C.
N.C.
3. GROUND
2. V
IN
1. RESET
V
IN
1.2 V
REF
GROUND
BLOCK DIAGRAM
RESET
2
Copyright © 1999
Rev. 1.2 6/99
PRODUCT DATABOOK 1996/1997
MC33164-3/MC34164-3
3V U
NDERVOLTAGE SENSING CIRCUIT
P RODUCTION DATA SHEET
RECOMMENDED OPERATING CONDITIONS (Note 2)
Parameter
Input Supply Voltage V
RESET Output Voltage V
Clamp Diode Forward Current (Note 3) I
Operating Ambient Temperature Range:
MC34164-3 T
MC33164-3 T
Note 2. Range over which the device is guaranteed functional.
Note 3. Maximum junction temperature ratings must be observed.
Symbol
IN
OUT
F
A
A
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures of 0°C ≤ TA ≤ 70°C for the MC34164-3 and -40°C ≤ TA ≤
85°C for the MC33164-3.
Parameter
Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Symbol
Test Conditions Units
Comparator Section
Threshold Voltage
High State Output V
Low State Output V
Hysteresis VH(IOL = 100µA)
Increasing — 2.4V to 3.5V
T+VIN
VIN Decreasing — 3.5V to 2.4V
T-
RESET Output Section
Output Low Level Saturation Voltage VIN = 2.4V, IOL = 8.0mA
V
Output Low Level Current I
Output Off-State Leakage I
Clamp Diode Forward Voltage VFPin 1 to pin 2, IF = 5mA
OL
OH
= 2.4V, IOL = 1.0mA
OLVIN
VIN = 1.0V, IOL = 0.25mA
VIN , RESET = 2.4V
VIN , RESET = 3.0V
VIN , RESET = 10V
Total Device
Supply Current I
CC
VIN = 3.0V
VIN = 6.0V
Recommended Operating Conditions
Min. Typ. Max.
110V
-0.3 10 V
100 mA
070°C
-40 85 °C
Units
MC33164-3 / 34164-3
Min. Typ. Max.
2.55 2.71 2.8 V
2.55 2.65 2.8 V
0.03 0.06 V
0.15 1.0 V
0.04 0.4 V
0.02 0.3 V
6.0 24 40 mA
.02 0.5 µA
.02 1.0 µA
0.6 0.75 1.0 V
913µA
21 30 µA
Copyright © 1999
Rev. 1.2 6/99
3
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