NE587 查看數據表（PDF） - Philips Electronics

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NE587

LED decoder/driver

Philips Electronics 

Philips Semiconductors Linear Products

LED decoder/driver

Product specification

NE587

DC ELECTRICAL CHARACTERISTICS

VCC=4.75 to 5.25V, 0°C < TA < 70°C. Typical values are at VCC=5V, TA=25°C, RP=1kΩ (±1%), unless otherwise specified.

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

Min

Typ

Max

UNIT

VCC

Operating supply voltage

VIH

Input high voltage

All inputs except BI

BI

4.75

5.00

5.25

V

2.0

15

V

2.0

5.5

VIL

Input low voltage

VIC

Input clamp voltage

IIH

Input high current

IIN=-12mA, TA=25°C

Inputs D0-D3, LE, RBI

VIN=2.4V

VIN=15V

Input BI (Pin 4)

0.8

V

-1.5

V

µA

1.0

10

15

15

10

100

µA

RBI=H

IIL

Input low current

VIN=VCC=5.25V

VIN=0.4V, Inputs D0-D3

LE, RBI

Input BI

-5

-200

µA

VOL

Output low voltage

VCC=5.25V

RBI=H, VIN=0.4V

Output RBO

IOUT=3.0mA

Output RBO

-0.7

mA

0.2

0.5

V

VOH

Output high voltage

IOUT=-50µA

RBI=H

3.5

4.5

V

IOUT

∆IOUT

Output segment

“ON” current

Output current ratio

(all outputs ON)

Output segment

Outputs “a” through “g”

VOUT=2.0V

With reference to “b” segment

VOUT=2.0V

Outputs “a” through “g”

20

25

30

mA

0.90

1.00

1.10

IOFF

“OFF” current

VOUT=5.0V

20

250

µA

VCC=5.25V

ICCO

Supply current

All outputs “ON”

33

55

mA

VOUT>1V

VCC=5.25V

ICCI

Supply current

All outputs blanked

50

70

mA

NOTES:

NE587 Programming:

The NE587 output current can be programmed, provided a program resistor, RP, be connected between IP (Pin 8) and Ground (Pin 9). The

voltage at IP (Pin 8) is constant (≈1.3V). Thus, a current through RP is IP ≈ 1.3V/RP, as shown in Figure 5. IO/IP is 20 in the 15 to 50mA output

current range.

August 31, 1994

532

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