CD74HCT4543

BCD-TO-7 SEGMENT LATCH/DECODER/DRIVER

SCHS281A – REVISED MAY 2003

4

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

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

Supply voltage range, VCC

–0.5 V to 7 V

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

Input diode current, IIK (VI < –0.5 V or VI > VCC + 0.5 V) ) (see Note 1)

±20 mA

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

Output diode current, IOK (VO < –0.5 V or VO > VCC + 0.5V) (see Note 1)

±20 mA

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

Continuous output source or sink current per output, IO (VO = 0 to VCC)

±25 mA

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

Continuous current through VCC or GND

±50 mA

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

Package thermal impedance,

θJA (see Note 2)

67

°C/W

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

At distance 1/16

± 1/32 in. (1.59 ± 0.79 mm) from case for 10 s maximum

265

°C

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

Unit inserted into a PC board (min. thickness 1/16 in., 1.59 mm)

with solder contacting lead tips only

300

°C

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

Storage temperature, Tstg

–65 to 150

°C

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

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

2. The package thermal impedance is calculated in accordance with JESD 51-7.

recommended operating conditions (see Note 3)

TA = 25°C

TA = –55°C

TO 125

°C

TA = –40°C

TO 85

°C

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

VCC

Supply voltage

4.5

5.5

4.5

5.5

4.5

5.5

V

VIH

High-level input voltage

2

2

2

V

VIL

Low-level input voltage

0.8

0.8

0.8

V

VI

Input voltage

VCC

VCC

VCC

V

VO

Output voltage

VCC

VCC

VCC

V

tt

Input transition (rise and fall) time

500

500

500

ns

NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,

Implications of Slow or Floating CMOS Inputs, literature number SCBA004.

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

TA = 25°C

TA = –55°C

TO 125

°C

TA = –40°C

TO 85

°C

UNIT

CC

MIN

TYP

MAX

MIN

MAX

MIN

MAX

VOH

VI =VIH or VIL

IOH = –20 µA

45 V

4.4

4.4

4.4

V

VOH

VI = VIH or VIL

IOH = –4 mA

4.5 V

3.98

3.7

3.84

V

VOL

VI =VIH or VIL

IOL = 20 µA

45 V

0.1

0.1

0.1

V

VOL

VI = VIH or VIL

IOL = 4 mA

4.5 V

0.26

0.4

0.33

V

II

VI = VCC to GND

5.5 V

±0.1

±1

±1

µA

ICC

VI = VCC or 0,

IO = 0

5.5 V

8

160

80

µA

∆ICC‡

One input at VCC – 2.1 V,

Other inputs at 0 or VCC

4.5 V to 5.5 V

100

360

490

450

µA

Ci

10

10

10

pF

‡ Additional quiescent supply current per input pin, TTL inputs high, 1 unit load. For dual-supply systems, theoretical worst-case

(VI = 2.4 V, VCC = 5.5 V) specification is 1.8 mA.