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AVC16245

16 Bit Bus Transceiver with 3-State Outputs

Preliminary

Product Features

鈥?/div>

Less than 2 nS maximum propagation delay at

2.5V and 3.3V V

DD

鈥?/div>

Wide supply voltage range of 1.2V to 3.6 V

鈥?/div>

Overvoltage-Tolerant Inputs/Outputs allow mixed-

voltage-mode data communications

鈥?/div>

Output circuitry with dynamic control minimizes

over/undershoot and maximizes output drive

鈥?/div>

Extended temp range of -40擄 to + 85擄 C

鈥?/div>

2KV ESD

鈥?/div>

48 pin TSSOP and TVSOP package availability

Product Description (Cont.)

To ensure the high-impedance state during power up

or power down, OE should be tied V

DD

through a

pullup resistor; the minimum value of the resistor is

determined by the current-sinking capability of the OE

driving device.

Output circuitry is dynamically controlled, which,

during output transitions, initially lowers the output

impedance to effectively drive the load and,

subsequently, raises the impedance to reduce noise.

Figure 1 shows typical VOL vs. IOL and VOH vs IOH

curves to illustrate the output impedance and drive

capability of the circuit.

Product Description

The AVC16245 is a 16-bit transceiver featuring non-

inverting buffer/line driver with 3-state bus compatible

outputs in both send and receive directions.

This device can be used as two 8-bit transceivers or

one 16-bit transceiver. It allows data transmission

from the A bus to the B bus or from the B bus to the A

bus, depending on the logic level at the direction-

control (DIR) inputs. The output enable (OE) inputs

can be used to disable the device so that the buses

are effectively isolated.

This product is designed to have an extremely low

propagation delay and a minimum amount of power

consumption.

Pin Configuration

Block Diagram

1DIR 1

48

1A1

47

2

1B1

1OE

2A1 36

13

2B1

2DIR 24

25

2OE

To seven other channels

1DIR

1B1

1B2

V

SS

1B3

1B4

V

DD

1B5

1B6

V

SS

1B7

1B8

2B1

2B2

V

SS

2B3

2B4

V

DD

2B5

2B6

V

SS

2B7

2B8

2DIR

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

1OE

1A1

1A2

V

SS

1A3

1A4

V

DD

1A5

1A6

V

SS

1A7

1A8

2A1

2A2

V

SS

2A3

2A4

V

DD

2A5

2A6

V

SS

2A7

2A8

2OE

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

MILPITAS, CA 95035. TEL: 408-263-6300. FAX 408-263-6571

http://www.imicorp.com

Rev.1.0

AVC16245

9/5/2000

Page 1 of 11

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