MC14499

MOTOROLA

2

Rating

Symbol

Value

Unit

DC Supply Voltage

VDD

– 0.5 to + 7

V

Input Voltage, All Inputs

Vin

– 0.5 to VDD + 0.5

V

Storage Temperature Range

Tstg

– 65 to + 150

°C

* Maximum Ratings are those values beyond which damage to the device may occur.

Functional operation should be restricted to the limits in the Electrical Characteristics table

or Circuit Operation section.

Characteristic

Symbol

0

°C

25

°C

70

°C

Unit

Characteristic

Symbol

Min

Max

Min

Max

Min

Max

Unit

Serial Port Input Voltage

‘0’ Level

‘1’ Level

VIL

VIH

—

0.7 x VDD

0.3 x VDD

—

—

0.7 x VDD

0.3 x VDD

—

—

0.7 x VDD

0.3 x VDD

—

V

Serial Port Input Current

(Vin = 0 to VDD)

Iin

—

± 0.1

—

± 0.1

—

± 1.0

µA

Oscillator Input Voltage

‘0’ Level

‘1’ Level

VIL

VIH

—

0.75 x VDD

0.25 x VDD

—

—

0.75 x VDD

0.25 x VDD

—

—

0.8 x VDD

0.2 x VDD

—

V

Oscillator Input Current

VOSC = 0

VOSC = VDD

IIL

IIH

—

—

100

– 100

30

– 30

80

– 80

10

– 10

—

—

µA

Segment Driver Voltage Below VDD

Iout = 50 mA

Iout = 10 mA

∆VOH

—

—

1.1

0.8

—

—

1.0

0.75

—

—

1.1

0.8

V

Segment Driver Off Leakage Vout = 0

IOZ

—

100

—

50

—

100

µA

Digit Drivers

Source (On)

Vout = 0.8 V

Sink (Off)

Vout = 0.5 V

IOH

IOL

6

– 0.2

—

—

5.5

– 0.2

—

—

4

– 0.1

—

—

mA

Supply Current

Vin = 0, Iout = 0,

COSC = 0.015 µF

IDD

—

1

—

1

—

1

mA

Maximum Power Dissipation

PD

—

500

—

500

—

500

mW

Characteristic

Figure

No.

Symbol

Min

Max

Unit

Clock High Time

2

tCH

2

—

µs

Clock Low Time

2

tCL

2

—

µs

Clock Rise Time

2

tCR

—

2

µs

Clock Fall Time

2

tCF

—

2

µs

Enable Lead Time

2

tE LEAD

200

—

ns

Enable Lag Time

2

tE LAG

200

—

ns

Data Set–Up Time

2

tD SUP

200

—

ns

Data Hold Time

2

tD HOLD

1

—

µs

Scanner Frequency*

4

1/tSCAN

50

300

Hz

OSC/Digit Lead Time

4

tOD

—

10

µs

OSC/Segment Lead Time

4

tOS

—

10

µs

Digit Overlap

4

tOV

—

5

µs

* Scanner Capacitance = 0.022

µF.

This device contains circuitry to protect the

inputs against damage due to high static

voltages or electric fields; however, it is ad-

vised that normal precautions be taken to avoid

application of any voltage higher than maxi-

mum rated voltages to this high impedance

circuit. For proper operation, it is recom-

mended that Vin and Vout be constrained to

the range VSS ≤ (Vin or Vout) ≤VDD.