INDUSTRIALTEMPERATURERANGE

IDT74LVCH16245A

3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS

1

OCTOBER

2008

INDUSTRIAL TEMPERATURE RANGE

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

© 2006 Integrated Device Technology, Inc.

DSC-4596/4

FEATURES:

• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using

machine model (C = 200pF, R = 0)

• CMOS power levels (0.4

μμμμμ W typ. static)

• All inputs, outputs, and I/O are 5V tolerant

• Available in SSSOP and TSSOP packages

FUNCTIONAL BLOCK DIAGRAM

APPLICATIONS:

• 5V and 3.3V mixed voltage systems

• Data communication and telecommunication systems

DRIVE FEATURES:

• High Output Drivers: ±24mA

• Reduced system switching noise

IDT74LVCH16245A

DESCRIPTION:

This 16-bit bus transceiver is built using advanced dual metal CMOS

technology. This high-speed, low power transceiver is ideal for asynchro-

nous communication between two busses (A and B). The Direction and

Output Enable controls are designed to operate this device as either two

independent 8-bit transceivers or one 16-bit transceiver. The direction

control pin (DIR) controls the direction of data flow. The output enable pin

(

OE) overrides the direction control and disables both ports. All inputs are

designed with hysteresis for improved noise margin.

All pins can be driven from either 3.3V or 5V devices. This feature allows

the use of this device as a translator in a mixed 3.3V/5V supply system.

The LVCH16245A has been designed with a ±24mA output driver. This

driver is capable of driving a moderate to heavy load while maintaining

speed performance.

The LVCH16245A has “bus-hold” which retains the inputs' last state

whenever the input goes to a high impedance. This prevents floating inputs

and eliminates the need for pull-up/down resistors.

3.3V CMOS 16-BIT

BUS TRANSCEIVER

WITH 3-STATE OUTPUTS,

5 VOLT TOLERANT I/O AND BUS-HOLD

1

DIR

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

OE

2

DIR

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

2

OE

1

47

46

44

43

41

40

38

37

48

2

3

5

6

8

9

11

12

24

36

35

33

32

30

29

27

26

25

13

14

16

17

19

20

22

23