SN74TVC16222A

22BIT VOLTAGE CLAMP

SCDS087G − APRIL 1999 − REVISED APRIL 2005

6

POST OFFICE BOX 655303

APPLICATION INFORMATION

TVC voltage-limiting application

For the voltage-limiting configuration, the common GATE input must be connected to one side (A or B) of any

200 k

Ω

VDDREF = 3.3 V

150

Ω

150

Ω

150

Ω

150

Ω

Open-Drain

CPU Interface

Motherboard

Interface

3

A2

4

A3

5

A4

24

A23

1

VDPU

TVC16222A

GATE†

48

B1 (VBIAS)†

47

2

A1 (VREF)†

† VREF and VBIAS can be applied to any one of the pass transistors. GATE must be connected externally to VBIAS.

B2

46

B3

45

B4

44

B23

25

Figure 3. Typical Application Circuit