MIC59P50

Micrel

7-60

October 1998

Electrical Characteristics

V

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Output Leakage Current

I

CEX

V

µA

V

100

Collector-Emitter

V

CE(SAT)

I

0.9

1.1

V

Saturation Voltage

I

1.1

1.3

I

1.3

1.6

Input Voltage

V

IN(0)

1.0

V

V

IN(1)

V

10.5

V

8.5

V

3.5

Input Resistance

R

IN

V

50

200

k

Ω

V

50

300

V

50

600

Flag Output Current

I

OL

V

15

mA

Flag Output Leakage

I

OH

V

50

nA

Supply Current

I

DD(ON)

V

3.3

4.5

mA

(One output

V

3.1

4.5

active)

V

2.4

3.6

I

DD(ON)

V

6.4

10.0

mA

(All outputs

V

6.0

9.0

active)

V

4.7

7.5

I

DD(OFF)

V

3.0

4.5

mA

(Total)

V

2.2

3.6

Clamp Diode

I

R

V

µA

Leakage Current

V

100

Over-Current Threshold

I

LIM

Each Output

500

mA

Start-Up Voltage

V

SU

Note 4

3.5

4.0

4.5

V

Minimum Operating V

DD

V

DD MIN

3.0

3.5

4.0

V

Clamp Diode Forward Voltage

V

F

I

1.7

2.0

V

Thermal Shutdown

165

°C

Thermal Shutdown Hysteresis

10

NOTE 3:

Operation of these devices with standard TTL or DTL may require the use of appropriate pull-up resistors to insure a minimum logic “1”.

NOTE 4:

Undervoltage lockout is guaranteed to release device at no more than 4.5V and disable the device at no less than 3.0V input logic voltage.

Truth Table

Output

Strobe

Clear

Enable

t–1

t

0

1

0

0

X

OFF

11

0

0

X

ON

X

X

1

X

X

OFF

X

X

X

1

X

OFF

X

0

0

0

ON

ON

X

0

0

0

OFF

OFF

X = Irrelevant

t–1 = previous output state

t = present output state

Information present at an input is transferred to its latch when

the STROBE is high. A high CLEAR input will set all latches

to the output OFF condition regardless of the data or STROBE

input levels. A high OUTPUT ENABLE will set all outputs to

the off condition, regardless of any other input conditions.

When the OUTPUT ENABLE is low, the outputs depend on

the state of their respective latches. If current shutdown is

activated, the OUTPUT ENABLE must be pulsed high to

restore operation and reset the Flag. Over temperature

faults are not latched and require no reset pulse.