LinearVoltageRegulators Motorola Semiconductor Products, LinearVoltageRegulators Datasheet - Page 34

• Manufacturer Part Number: LinearVoltageRegulators
• Description: Analog And Interface Integratedcircuits Selector Guide & Cross Reference
• Manufacturer: Motorola Semiconductor Products

Supervisory Circuits
Undervoltage Sensing Circuit
MC34064P–5, D–5, DM–5
T A = 0 to +70 C, Case 29, 751, 846A
MC33064P–5, D–5, DM–5
T A = –40 to +85 C, Case 29, 751, 846A
MC34164P–3, P–5, D–3, D–5, DM–3, DM–5
T A = 0 to +70 C, Case 29, 751, 846A
MC33164P–3, P–5, D–3, D–5, DM–3, DM–5
T A = –40 to +85 C, Case 29, 751, 846A
undervoltage sensing circuits specifically designed for use as
reset controllers in microprocessor–based systems. They
offer the designer an economical solution for low voltage
detection with a single external resistor. Both parts feature a
trimmed bandgap reference, and a comparator with precise
thresholds and built–in hysteresis to prevent erratic reset
operation.
together, cover the needs of the most commonly specified
power supplies used in MCU/MPU systems. Key parameter
specifications of the MC34164 family were chosen to
complement the MC34064 series. The table summarizes
critical parameters of both families. The MC34064 fulfills the
needs of a 5.0 V 5% system and features a tighter hysteresis
specification. The MC34164 series covers 5.0 V
Table 14. Undervoltage Sense/Reset Controller Features
MC34064/MC33064
MC34164/MC33164
MC34164/MC33164
ANALOG AND INTERFACE INTEGRATED CIRCUITS
SELECTOR GUIDE & CROSS REFERENCE
The MC34064 and MC34164 are two families of
The two families of undervoltage sensing circuits taken
MC34X64 devices are specified to operate from 0 to +70 C, and MC33X64 devices operate from –40 to +85 C.
D
Device
i
5.0 V
Supported
5.0 V
3.0 V
Standard
Supply
Power
Power
10%
(continued)
5%
5%
Threshold
Threshold
Voltage
Typical
4.6
4.3
2.7
(V)
10% and
Hysteresis
Hysteresis
Voltage
Typical
0.02
0.09
0.06
(V)
3.0 V
consumption, making them ideal for applications where
extended battery life is required such as consumer products
or hand held equipment.
logic power supply used in appliance, automotive, consumer,
and industrial equipment.
applications where low bias current (1/25th of the MC34064’s)
is an important characteristic.
Current (mA)
Applications include direct monitoring of the 5.0 V MPU/
The MC34164 is specifically designed for battery powered
Minimum
Output
Output
Sink
Input
7.0
6.0
10
5% power supplies with significantly lower power
2 (2)
1.2 V ref
Gnd
3 (4)
Range (V)
1.0 to 10
1.0 to 12
1.0 to 12
Voltage
Supply
Power
Input
Input
V in = 5.0 V
V in = 5.0 V
V in = 5.0 V
V in = 5.0 V
V in = 3.0 V
V in = 3.0 V
Quiescent
Quiescent
Maximum
Current
500 A
20 A
15 A
Input
@
@
@
@
@
@
1 (1)
Reset
Pin numbers in
parenthesis
are for the
D suffix package.
MOTOROLA
DM–5/846A
DM–5/846A
DM–3/846A
Package
D–5/751
D–5/751
D–3/751
S ffi /
Suffix/
P–5/29
P–5/29
P–3/29
63