TPIC6B595

POWER LOGIC 8-BIT SHIFT REGISTER

SLIS032 – JULY 1995

7

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

15 V

10.5

Ω

200 mH

SINGLE-PULSE AVALANCHE ENERGY TEST CIRCUIT

tw

tav

IAS = 0.5 A

V(BR)DSX = 50 V

VOLTAGE AND CURRENT WAVEFORMS

Input

ID

VDS

See Note B

VCC

DRAIN

SRCLR

SER IN

G

SRCK

RCK

Word

Generator

(see Note A)

DUT

GND

5 V

VDS

ID

2

8

13

3

12

9

10, 11, 19

4 –7,

14 –17

5 V

0 V

MIN

NOTES: A. The word generator has the following characteristics: tr ≤ 10 ns, tf ≤ 10 ns, ZO = 50 Ω.

B. Input pulse duration, tw, is increased until peak current IAS = 0.5 A.

Energy test level is defined as EAS = IAS × V(BR)DSX × tav/2 = 30 mJ.

Figure 4. Single-Pulse Avalanche Energy Test Circuit and Waveforms

TYPICAL CHARACTERISTICS

2

1

10

4

0.1

0.2

1

0.4

2

10

4

0.2

0.1

0.4

PEAK AVALANCHE CURRENT

vs

TIME DURATION OF AVALANCHE

tav – Time Duration of Avalanche – ms

TC = 25°C

Figure 5

SUPPLY CURRENT

vs

FREQUENCY

f – Frequency – MHz

1

0.5

0

0.1

1

10

1.5

2

100

2.5

VCC = 5 V

TC = – 40°C to 125°C

Figure 6