SLDS031A

– APRIL 1985 – REVISED APRIL 1993

4

–5

POST OFFICE BOX 655303

DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

18 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

90 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ground current

700 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation

See Dissipation Rating Table

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

– 40 C to 85 C

. . . . . . . . . . . . . . . . . . . . . . .

SN75555, SN75556

0 C to 70 C

. . . . . . . . . . . . . . . . . . . . . . . . . .

–65 C to 150 C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Case temperature for 10 seconds: FN package

260 C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: N package

260 C

. . . . . . . . . . . . . . . . . . . . .

NOTES:

1. Voltage values are with respect to network GND.

2. These devices have been designed to be used in applications in which the high-voltage supply, VCC2, is switched to GND before

changing the state of the outputs.

DISSIPATION RATING TABLE

PACKAGE

TA 25 C

DERATING FACTOR

TA = 70 C

TA = 85 C

PACKAGE

A

POWER RATING

ABOVE TA = 25 C

A

POWER RATING

A

POWER RATING

FN

1700 mW

13.6 mW/ C

1088 mW

884 mW

N

1250 mW

10.0 mW/ C

800 mW

650 mW

recommended operating conditions

MIN

NOM

MAX

UNIT

Supply voltage, VCC1

10.8

12

15

V

Supply voltage, VCC2

0

80

V

High level input voltageVIH (see Figure 1)

VCC1 = 10.8 V

8.1

11.1

V

High-level input voltage, VIH (see Figure 1)

VCC1 = 15 V

11.25

15.3

V

Low level input voltageVIL (see Figure 1)

VCC1 = 10.8 V

– 0.3†

2.7

V

Low-level input voltage, VIL (see Figure 1)

VCC1 = 15 V

– 0.3†

3.75

V

High-level output current, IOH

– 15

mA

Low-level output current, IOL

15

mA

Output clamp current, IOK

20

mA

Clock frequency, fclock

0

6.25

MHz

Pulse duration, CLOCK high or low, tw(CLK) (see Figure 2)

80

ns

Pulse duration, LATCH ENABLE, tw(LE)

80

ns

Setup timet

DATA IN before CLOCK

(see Figure 2)

20

ns

Setup time, tsu

OUTPUT ENABLE before VCC2 (see Figure 4)

500

ns

Hold timeth

DATA IN after CLOCK

(see Figure 2)

80

ns

Hold time, th

OUTPUT ENABLE after VCC2 (see Figure 4)

100

ns

Rate of rise for VCC2, dv/dt

80

V/ s

Operating free air temperatureTA

SN65555, SN65556

– 40

85

C

Operating free-air temperature, TA

SN75555, SN75556

0

85

C

† The algebraic convention, in which the least positive (most negative) value is designated as minimum, is used in this data sheet for logic voltage

levels.