LS7030 datasheet(2/4 Pages) LSI

2 / 4 page

With VGG at -12V, VDD at OV and Vss at +5V, all inputs are TTL

and CMOS compatible. All outputs are CMOS compatible and

BCD and BLANK outputs also provide standard TTL compat-

ibility. In addition, Overflow Output is low power TTL compatible.

In either mode outputs swing between VDD and Vss.

MAXIMUM RATINGS

PARAMETER

SYMBOL

VALUE

UNITS

Storage Temperature

Tstg

-65 to +150

°C

Operating Temperature TA

-25 to +70

°C

Voltage (any pin to Vss) Vmax

-30 to +0.5

PARAMETER

SYMBOL

MIN

MAX

UNITS

Operating Supply Current

Idds

(fC = 7.5MHz)

Input Noise Immunity

Low and High

Vni

25%

(Vss-VDD)

Test Count Input

Vil

Vss - 20

Vss - 3.95

Vih

Vss - 1.0

Vss

Output Voltage “0"

Vol

+0.2

Output Voltage “1"

Voh

Vss - 1.0

Output Voltage “0"

(sinking 10µA)

Vol

+0.5

Output Voltage “1"

Vss = 4.75 (Voh = Vss - 0.5V)

0.05

(Voh = Vss - 1V)

0.25

(Voh = Vss - 4V)

0.90

Vss = 10V (Voh = Vss - 2V)

2.0

(Voh = Vss - 3V)

3.0

Vss = 15V (Voh = Vss - 2V)

3.0

(Voh = Vss - 3V)

4.5

NOTE 1: Current Sink = Same as segment and strobe outputs.

Current Source = N/A at Voh = Vss -.5V for Vss = +4.75V

35µA at Voh = Vss -1V for Vss = +4.75V

40% of segment and strobe outputs at all other specified operating points.

NOTE 2: Limit segment current to 4.5mA maximum.

Limit strobe current to 6mA maximum.

The following inputs have internal pull down resistors to VDD with maximum sink current of 5µA at Vss input.

Scan Reset

Test Count

Count

Decimal Point

Overflow

Lamp Test

DC ELECTRICAL CHARACTERISTICS

(VDD = VGG= OV, Vss = +4.75 to +15V, -25°C

≤ TA ≥ +70°C unless otherwise specified.)

D6, D7, D8

OF, BCD

Blank

(See Note 1)

Segment

and

Strobe

Outputs

(See Note 2)

BCD and 7 SEGMENT DATA

Data is available in BCD and 7 segment format. BCD data can be

demultiplexed using Digit Strobes as latch enable signals.

POWER SUPPLIES

+4.75 Volts to +15 Volts single power supply operation is obtained

when VGG and VDD are tied together. Inputs and outputs are

CMOS compatible and Minimum Input Noise Immunity of 25% of

power supply is guaranteed except for Test Count Input. (Inputs

are TTL compatible at +4.75V to +5.25V operation.)

SCAN OSCILLATOR

CAPACITANCE

TYPICAL OSCILLATOR FREQUENCY

4.75V

10V

15V

50pF

40.0 kHz

24.2kHz

22.2 kHz

100pF

22.2 kHz

14.8kHz

13.8 kHz

470pF

5.0 kHz

3.6kHz

3.5 kHz

750pF

3.3 kHz

2.4kHz

2.2 kHz

2000pF

1.3 kHz

0.91kHz

0.85 kHz

{

7030-110201-2

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