MOTOROLA MC34161DR2, MC33161P, MC33161D, MC33161DR2 Datasheet

MC34161, MC33161

Universal Voltage Monitors

The MC34161/MC33161 are universal voltage monitors intended
for use in a wide variety of voltage sensing applications. These devices
offer the circuit designer an economical solution for positive and
negative voltage detection. The circuit consists of two comparator
channels each with hysteresis, a unique Mode Select Input for channel
programming, a pinned out 2.54 V reference, and two open collector
outputs capable of sinking in excess of 10 mA. Each comparator
channel can be configured as either inverting or noninverting by the
Mode Select Input. This allows over, under, and window detection of
positive and negative voltages. The minimum supply voltage needed
for these devices to be fully functional is 2.0 V for positive voltage
sensing and 4.0 V for negative voltage sensing.

Applications include direct monitoring of positive and negative
voltages used in appliance, automotive, consumer, and industrial
equipment.

• Unique Mode Select Input Allows Channel Programming

• Over, Under, and Window Voltage Detection

• Positive and Negative Voltage Detection

• Fully Functional at 2.0 V for Positive Voltage Sensing and 4.0 V for

Negative Voltage Sensing

• Pinned Out 2.54 V Reference with Current Limit Protection

• Low Standby Current

• Open Collector Outputs for Enhanced Device Flexibility

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MARKING

DIAGRAMS

8

PDIP–8

P SUFFIX

8

1

8

1

CASE 626

SO–8
D SUFFIX
CASE 751

x = 3 or 4
A = Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W= Work Week

MC3x161P

AWL

YYWW

1

8

3x161
ALYW

1

Simplified Block Diagram

(Positive Voltage Window Detector Application)

V

CC

8

1

V

S

7

2

3

+
–

+

1.27V

+
–

+

1.27V

2.54V

Reference

–
+

+

2.8V

–
+

+

0.6V

4

PIN CONNECTIONS

V
Input 1
Input 2

Gnd

1

ref

2
3
4

(TOP VIEW)

V

8

Mode Select

7

Output 1

6

Output 2

5

CC

ORDERING INFORMATION

6

5

Device Package Shipping

MC34161D SO–8 98 Units/Rail
MC34161DR2 SO–8 2500 Tape & Reel
MC34161P PDIP–8
MC33161D SO–8
MC33161DR2 SO–8 2500 Tape & Reel
MC33161P PDIP–8 50 Units/Rail

50 Units/Rail
98 Units/Rail

 Semiconductor Components Industries, LLC, 2000

April, 2000 – Rev. 2

1 Publication Order Number:

MC34161/D

MC34161, MC33161

MAXIMUM RATINGS

Rating Symbol Value Unit

Power Supply Input Voltage V
Comparator Input Voltage Range V
Comparator Output Sink Current (Pins 5 and 6) (Note 1.) I
Comparator Output Voltage V
Power Dissipation and Thermal Characteristics (Note 1.)

P Suffix, Plastic Package, Case 626

Maximum Power Dissipation @ TA = 70°C
Thermal Resistance, Junction–to–Air

D Suffix, Plastic Package, Case 751

Maximum Power Dissipation @ TA = 70°C

Thermal Resistance, Junction–to–Air
Operating Junction Temperature T
Operating Ambient Temperature (Note 3.)

MC34161
MC33161

Storage Temperature Range T

ELECTRICAL CHARACTERISTICS (V

Characteristics

COMPARATOR INPUTS

Threshold Voltage, Vin Increasing (TA = 25°C)

Threshold Voltage, Vin Increasing (TA = T

Threshold Voltage Variation (VCC = 2.0 V to 40 V) ∆V
Threshold Hysteresis, Vin Decreasing V
Threshold Difference |V
Reference to Threshold Difference (V
Input Bias Current (Vin = 1.0 V)

Input Bias Current (Vin = 1.5 V)

MODE SELECT INPUT

Mode Select Threshold Voltage (Figure 5) Channel 1

Mode Select Threshold Voltage (Figure 5) Channel 2

COMPARATOR OUTPUTS

Output Sink Saturation Voltage (I

Output Sink Saturation Voltage (I
Output Sink Saturation Voltage (I

Off–State Leakage Current (VOH = 40 V) I

REFERENCE OUTPUT

Output Voltage (IO = 0 mA, TA = 25°C) V
Load Regulation (IO = 0 mA to 2.0 mA) Reg
Line Regulation (VCC = 4.0 V to 40 V) Reg
Total Output Variation over Line, Load, and Temperature ∆V
Short Circuit Current I

TOTAL DEVICE

Power Supply Current (V

Power Supply Current (V

Operating Voltage Range (Positive Sensing)

Operating Voltage Range (Negative Sensing)

1. Maximum package power dissipation must be observed.

2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.

3. T

=0°C for MC34161 T

low

–40°C for MC33161 +85°C for MC33161

– V

th1

Mode

Mode

| V

th2

ref

= 2.0 mA)

Sink

= 10 mA)

Sink

= 0.25 mA, VCC = 1.0 V)

Sink

, V

, V

in1

, Vin 1, Vin 2 = Gd) (VCC = 40 V)

= 5.0 V, for typical values TA = 25°C, for min/max values TA is the operating ambient

CC

temperature range that applies [Notes 2. and 3.], unless otherwise noted.)

Symbol Min Typ Max Unit

V

RTD

I

IB

V

th(CH 1)

V

th(CH 2)

V

OL

OH

ref

SC

I

CC

V

CC

th

th
H
D

load

line

ref

to T

min

– V

), (V

in1

= Gnd) (VCC = 5.0 V)

in2

high

)

max

– V

ref

in2

= +70°C for MC34161

) V

CC

in

Sink

out

P

D

R

θJA

P

D

R

θJA

J

T

A

stg

1.245

1.235
– 7.0 15 mV

15 25 35 mV

– 1.0 15 mV

1.20 1.27 1.32 V
–

–

V

+0.15

ref

0.3

–
–
–

– 0 1.0 µA

2.48 2.54 2.60 V
– 0.6 15 mV
– 5.0 15 mV

2.45 – 2.60 V
– 8.5 30 mA

–
–

2.0

4.0

40 V

– 1.0 to +40 V

20 mA
40 V

800
100

450
178

+150 °C

0 to +70

– 40 to +85

– 55 to +150 °C

1.27
–

40
85

V

ref

+0.23

0.63

0.05

0.22

0.02

450
560

–
–

V

ref

1.295

1.295

200
400

+0.30

0.9

0.3

0.6

0.2

700
900

40
40

mW

°C/W

mW

°C/W

°C

V

nA

V

V

µA

V

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MC34161, MC33161

6.0

VCC = 5.0 V
RL = 10 k to V

5.0

TA =

4.0

3.0

2.0

, OUTPUT VOLTAGE (V)

TA = 85°C

out

TA = 25°C

V

1.0

TA = –40°C

0

1.22 1.281.23 1.24 1.25 1.26 1.27 1.29

CC

25°C

Vin, INPUT VOLTAGE (V)

Figure 1. Comparator Input Threshold Voltage

3600

3000

2400

1800

1200

, OUTPUT PROPAGATION DELAY TIME (ns)

PHL

t

600

VCC = 5.0 V
TA = 25°C

4.0 6.00 2.0

PERCENT OVERDRIVE (%)

1. V

= Gnd, Output Falling

Mode

2. V

= VCC, Output Rising

Mode

3. V

= VCC, Output Falling

Mode

4. V

= Gnd, Output Rising

Mode

1

2

3

4

8.0 10

TA = 85°C
TA = 25°C
TA = –40°C

500

VCC = 5.0 V
V

= Gnd

Mode

TA = 25°C

0

1.0 3.02.00 4.0 5.0
Vin, INPUT VOLTAGE (V)

IB

I , INPUT BIAS CURRENT (nA)

400

300

200

100

Figure 2. Comparator Input Bias Current

versus Input V oltage

8.0
Undervoltage Detector

Programmed to trip at 4.5 V
R1 = 1.8 k, R2 = 4.7 k

6.0

RL = 10 k to V
Refer to Figure 16

4.0

, OUTPUT VOLTAGE (V)

out

2.0

V

0

0 2.0 4.0 6.0 8.0

CC

TA = –40°C
TA = –25°C

TA = –85°C

VCC, SUPPLY VOLTAGE (V)

Figure 3. Output Propagation Delay Time

versus Percent Overdrive

6.0
Channel 2 Threshold Channel 1 Threshold

5.0

VCC = 5.0 V
RL = 10 k to V

TA = 85°C

TA = 25°C
TA = –40°C

1.0 3.00 0.5 1.5 2.52.0 3.5
, MODE SELECT INPUT VOLTAGE (V)

CC

TA = –40°C

, CHANNEL OUTPUT VOLTAGE (V)
V

out

4.0

3.0

2.0

1.0

0

V

Mode

Figure 5. Mode Select Thresholds

TA = 85°C
TA = 25°C

Figure 4. Output V oltage versus Supply Voltage

40

VCC = 5.0 V

35

TA = 25°C

30
25
20
15
10

, MODE SELECT INPUT CURRENT ( A)µ

5.0

Mode

0

I

1.0 3.02.00 4.0 5.0

V

, MODE SELECT INPUT VOLTAGE (V)

Mode

Figure 6. Mode Select Input Current

versus Input V oltage

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2.8

2.610

2.4

2.0

1.6

1.2

0.8

ref

V , REFERENCE VOLTAGE (V)

0.4
0

MC34161, MC33161

V

Max = 2.60 V

V

Typ = 2.54 V

ref

ref

VCC = 5.0 V
V

= Gnd

Mode

2.578

2.546

V

= Gnd

Mode

TA = 25°C

0

10 3020 40

VCC, SUPPLY VOLTAGE (V)

2.514

2.482

, REFERENCE OUTPUT VOLTAGE (V)

ref

V

2.450

V

Min = 2.48 V

ref

–55 –25 0 25 50 75 100 125

TA, AMBIENT TEMPERATURE (°C)

0

–2.0

–4.0

VCC = 5.0 V
V

= Gnd

Mode

–6.0

–8.0

, REFERENCE VOLTAGE CHANGE (mV)

ref

V

–10

1.00

Figure 9. Reference V oltage Change

Figure 7. Reference V oltage

versus Supply V oltage

= 85°C

A

T

= –40°C

A

T

2.0 3.0 4.0 5.0 6.0 7.0 8.0

I

, REFERENCE SOURCE CURRENT (mA)

ref

versus Source Current

Figure 8. Reference V oltage

versus Ambient T emperature

0.5
VCC = 5.0 V

V

= Gnd

Mode

0.4

0.3

= 25°C

A

T

, OUTPUT SATURATION VOLTAGE (V)
V

out

0.2

0.1

0

TA = 25°C

4.00

I

, OUTPUT SINK CURRENT (mA)

out

8.0 12 16

TA = 85°C

TA = –40°C

Figure 10. Output Saturation Voltage

versus Output Sink Current

, SUPPLY CURRENT (mA)

CC

I

0.8

0.6

0.4

0.2

0

V

Mode

V

= Gnd

Mode

Pins 2, 3 = 1.5 V

100

VCC, SUPPLY VOLTAGE (V)

Pins 2, 3 = Gnd

20 30 40

Figure 11. Supply Current versus

Supply V oltage

= V

CC

V

= V

Mode

Pin 1 = 1.5 V
Pin 2 = Gnd

ICC measured at Pin 8
TA = 25°C

1.6

1.2

ref

0.8

, INPUT SUPPLY CURRENT (mA)

0.4

CC

I

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VCC = 5.0 V
V

= Gnd

Mode

TA = 25°C

0

4.00
I

, OUTPUT SINK CURRENT (mA)

out

8.0 12 16

Figure 12. Supply Current

versus Output Sink Current

MC34161, MC33161

V

CC

8

V

Mode Select

Input 1

Input 2

ref

1

7

+

2

3

–

+

1.27V

+
–

+

1.27V

Reference

+

+

Gnd

2.54V

2.8V

0.6V

–
+

–
+

4

Channel 1

Channel 2

Figure 13. MC34161 Representative Block Diagram

Output 1

6

Output 2

5

Mode Select

Pin 7

GND 0

V

ref

VCC (>2.0 V) 0

Input 1

Pin 2

Output 1

Pin 6

1
0

1

1

0
1

0
1

1
0

Input 2

Pin 3

0
1

0
1

0
1

Output 2

Pin 5

0
1

1
0

1
0

Comments

Channels 1 & 2: Noninverting

Channel 1: Noninverting
Channel 2: Inverting

Channels 1 & 2: Inverting

Figure 14. Truth Table

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