TPS2228

TPS2221

SLVS419A – MAY 2002 REVISED SEPTEMBER 2002

www.ti.com

13

PARAMETER MEASUREMENT INFORMATION

Terminal Functions (Dual-Serial)

TERMINAL

NO.

I/O

DESCRIPTION

NAME

2228

(DB–30)

2228

(PWP–20)

I/O

DESCRIPTION

1.8VIN

6, 28

5, 19

I

1.8-V input for card power (xVPP/VCORE).

Pins 6 and 28 must be connected together externally.

3.3VIN

15, 16,

17

11, 12

I

3.3-V input for card power (xVCC and xVPP/Vcore) and chip power (3.3VIN must be

connected to a voltage source for the device to operate)

5VIN

1, 2, 30

1, 20

I

5-V input for card power (xVCC and xVPP/Vcore)

AVCC

9, 10, 11

7, 8

O

Switched output that delivers 0 V, 3.3 V, 5 V, or high impedance to card

AVPP/VCORE

8

6

O

Switched output that delivers 0 V, 1.8 V, 3.3 V, 5 V, or high impedance to card

BVCC

20, 21,

22

14, 15

O

Switched output that delivers 0 V, 3.3 V, 5 V, or high impedance to card

BVPP/VCORE

23

17

O

Switched output that delivers 0 V, 1.8 V, 3.3 V, 5 V, or high impedance to card

CLOCK

4

3

I

Logic-level clock for serial data word

DATA

3

2

I

Logic-level serial data word

GND

12

9

Ground

LATCH

5

4

I

Logic-level latch for serial data word, an internal pulldown is provided

NC

7,13,19,

24, 26,

27, 29

16

No internal connection

OC

18

13

O

Open-drain output that is asserted low when an overcurrent condition exists.

RESET

14

10

I

Logic-level RESET input. Asynchronous command active low. An internal pullup is provided.

When active, all line switches are off and all the output discharge switches are on.

SHDN

25

18

I

Hi-Z (open) all switches. Identical function to serial shutdown with D8=0. Asynchronous com-

mand active low. An internal pullup is provided.

Terminal Functions (Single – Parallel)

TERMINAL

NO.

I/O

DESCRIPTION

NAME

2221

(PWP–14)

I/O

DESCRIPTION

1.8VIN

10

I

1.8-V input for card power (VPP/VCORE)

3.3VIN

3

I

3.3-V input for card power (VCC and VPP/Vcore) and chip power (3.3VIN must be connected to a voltage

source for the device to operate)

5VIN

6

I

5-V input for card power (VCC and VPP/Vcore)

GND

7

Ground

OC

9

O

Open-drain output that is asserted low when an overcurrent condition exists.

SHDN_RST

8

I

Hi-Z (open) all switches. Identical function to serial shutdown mode by parallel data VD (3:0).

Asynchronous command active low. An internal pullup is provided.

VCC

4, 5

O

Switched output that delivers 0 V, 3.3 V, 5 V, or high impedance to card

VD0

2

I

Parallel control signal 0 (see Table 2. TPS2221 Control Logic)

VD1

1

I

Parallel control signal 1 (see Table 2. TPS2221 Control Logic)

VD2

14

I

Parallel control signal 2 (see Table 2. TPS2221 Control Logic)

VD3

13

I

Parallel control signal 3 (see Table 2. TPS2221 Control Logic)

VPP/VCORE

11, 12

O

Switched output that delivers 0 V, 1.8 V, 3.3 V, 5 V, or high impedance to card