Integrated Device Technology Inc IDT74FST16163212PV, IDT74FST16163212PF, IDT74FST16163212PA Datasheet

Integrated Device Technology, Inc.

The IDT logo is a registered trademark of Integrated Device Technology, Inc.

FEATURES:

• Bus switches provide zero delay paths

• Extended commercial range of –40°C to +85°C

• Low switch on-resistance:
FST163xxx – 4Ω

• TTL-compatible input and output levels

• ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)

• Available in SSOP, TSSOP and TVSOP

COMMERCIAL TEMPERATURE RANGE SEPTEMBER 1996

1996 Integrated Device Technology, Inc. DSC-3508/-

1

IDT74FST163212

ADVANCE INFORMATION

24-BIT BUS EXCHANGE
SWITCH

or source capability. Thus they generate little or no noise of
their own while providing a low resistance path for an external
driver. These devices connect input and output ports through
an n-channel FET. When the gate-to-source junction of this
FET is adequately forward-biased the device conducts and
the resistance between input and output ports is small. With­out adequate bias on the gate-to-source junction of the FET,
the FET is turned off, therefore with no VCC applied, the device
has hot insertion capability.

The low on-resistance and simplicity of the connection
between input and output ports reduces the delay in this path
to close to zero.

The FST163212 provides four 12-bit TTL- compatible ports
that support 2 way bus exchange. The S

0-2 pins control the

bus exchange and switch enable functions.

PIN DESCRIPTION

3508 tbl 01

FUNCTIONAL BLOCK DIAGRAM

1A1

S0
S1

1

B1

1 of 12 Channels

Flow Control

1B2

1

A2

S2

3508 drw 01

DESCRIPTION:

The FST163212 belongs to IDT's family of Bus switches.
Bus switch devices perform the function of connecting or
isolating two ports without providing any inherent current sink

Pin Names I/O Description

A

1, A2

B

1, B2

I/O Buses A

1, A2

, B

1, B2

S

0-2

I Control Pins for Mux and Switch

Enable Functions

2

IDT74FST163212
24-BIT BUS EXCHANGE SWITCH COMMERCIAL TEMPERATURE RANGE

ABSOLUTE MAXIMUM RATINGS

(1)

PIN CONFIGURATION

CAPACITANCE

(1)

FUNCTION TABLE

SSOP/

TSSOP/TVSOP

TOP VIEW

5

6
7
8
9
10

1
2

3
4

54
53
52

51
50
49

48
47

46
45

4A2

1

A1

1

A2

2

A1

2

A2

3

A1

3

A2

GND

4A1

1

B1

1

B2

2

B1

2

B2

3

B1

3

B2

4

B1

S1
S2

5A1

11
12

55

56

5A2

4

B2

5

B1

17

18
19

20
21

22

13
14

15
16

42
41
40

39
38
37

36
35

34
33

9A2

6

A2

7

A1

7

A2

6

A1

VCC

8

A1

GND

8A2

9

A1

6

B2

7

B1

7

B2

8

B1

GND

8B2

9

B1

9

B2

5

B2

6

B1

SO56-1
SO56-2
SO56-3

10A1

23
24

43

44

10A2

10

B1

10

B2

25
26

32
31

30
29

11A2

11

A111B1

11

B2

12A1

27
28

12A2

12

B1

12

B2

S0

GND

S2 S1 S0 A1 A2 Function

L L L Z Z Disconnect
LLHB1 ZA1 to B1
LHLB2 ZA1 to B2

LHHZB1 A2 to B1
HLLZB2 A2 to B2
H L H Z Z Disconnect
HHLB1 B2 A1 to B1, A2 to B2
HHHB2 B1 A1 to B2, A2 to B1

3508 drw 02

3508 tbl 04

Symbol Description Max. Unit

VTERM

(2)

Terminal Voltage with Respect
to GND

–0.5 to +7.0 V

TSTG Storage Temperature –65 to +150 °C
IOUT Maximum Continuous Channel

Current

128 mA

3508 tbl 02

NOTES:

1. Stresses greater than those listed under ABSOLUTE MAXIMUM RAT­INGS may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions
above those indicated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating condiitions for extended
periods may affect reliability.

2. V

CC, Control and Switch terminals.

Symbol Parameter Conditions

(2)

Typ. Unit

C

IN

Control Input Capacitance 4

pF

C

I/O

Switch Input/Output
Capacitance

Switch Off

pF

3508 tbl 03

NOTES:

1. Capacitance is characterized but not tested

2. T

A = 25°C, f = 1MHz, VIN = 0V, VOUT = 0V