STFPC311 datasheet(30/39 Pages) STMICROELECTRONICS

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11 Electrical characteristics

STFPC311

30/39

Electrical characteristics

Table 8.

Electrical specifications

(TA = -20 to +70°C, VDD = 3.3V, VSS = 0V, VSS = VDD - 33.3V)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

VOH1

High-Level Output Voltage

LED1 – LED4, IOH1 = -1mA

0.9VDD

VOL1

Low-Level Output Voltage

LED1 – LED4, IOH2 = 20mA

VOL2

Low-Level Output Voltage

DOUT, IOL2 = 4mA

0.4

IOH21

High-Level Output Current

VO = VDD – 2V, Seg1to Seg12

-3

IOH22

High-Level Output Current

VO = VDD – 2 V, Grid1to Grid8,

Se13g/Grid16to Seg20/Grid9

-15

IOLEAK Driver Leakage Current

VO = VDD – 33.3 V, driver off

-10

µA

Output Pull-Down Resistor Driver output

100

150

Ω

Input Current

VI= VDD or VSS

±1

µA

VIH

High-Level Input Voltage

0.7VDD

VIL

Low-Level Input Voltage

0.3VDD

Hysteresis Voltage

CLK, DIN, STB

0.35

IDD(DYN)

Dynamic Current

Consumption

Under no load, display off

Table 9.

Switching characteristics (TA = -20 to +70 °C, VDD = 3.3 V, VSS = -30 V)

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

tOSC

Oscillation Frequency

R = 33K

Ω ±5%

350

500

650

kHz

tPLZ

Propagation Delay Time

CLK

≤DOUT

CL = 15pF, RL = 10KΩ

300

tPZL

100

tTZH1

Rise Time

CL = 300pF

Seg1 to Seg12

µs

tTZH2

Grid1 to Grid8,

Seg13/Seg16 to

Seg20/Grid9

0.5

µs

tTHZ

Fall Time

CL = 300pF, Segn, Gridn

120

µs

fMAX

Maximum Clock

Frequency

Duty = 50%

MHz

Input Capacitance

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