Philips 74ALVCH16245DL, 74ALVCH16245DGG, 74ALVC16245DL, 74ALVC16245DGG Datasheet

INTEGRATED CIRCUITS

74ALVC16245/74ALVCH16245

2.5V/3.3V 16-bit bus transceiver with
direction pin (3-State)

Product specification
Supersedes data of 1998 Jun 16
IC24 Data Handbook




1998 Jun 29

Philips Semiconductors Product specification

CPDPower dissipation capacitance per buffer

V

GND to V

1

pF

16-bit bus transceiver with direction pin (3-State)

FEA TURES

•Wide supply voltage range of 1.2V to 3.6V

•Complies with JEDEC standard no. 8-1A

•CMOS low power consumption

•MULTIBYTE

•Low inductance multiple V

and ground bounce

TM

flow-through standard pin-out architecture

and ground pins for minimum noise

CC

•Direct interface with TTL levels

•All data inputs have bus hold (74ALVCH16245 only)

•Output drive capability 50Ω transmission lines @ 85°C

•Current drive ±24 mA at 3.0 V

DESCRIPTION

The 74ALVC16245(74ALVCH16245) is a 16-bit transceiver featuring
non-inverting 3-State bus compatible outputs in both send and
receive directions.

The 74ALVC16245(74ALVCH16245) features two output enable
(nOE

) inputs for easy cascading and two send/receive (nDIR) inputs
for direction control. nOE
effectively isolated. This device can be used as two 8-bit
transceivers or one 16-bit transceiver.

The 74ALVCH16245 has active bus hold circuitry which is provided
to hold unused or floating data inputs at a valid logic level. This
feature eliminates the need for external pull-up or pull-down
resistors.

The 74ALVC16245 has 5V tolerant inputs.

QUICK REFERENCE DA TA

GND = 0V; T

SYMBOL

t

PHL/tPLH

C

I

C

I/O

NOTE:

is used to determine the dynamic power dissipation (PD in µW):

1. C

PD

= CPD × V

P

D

= output frequency in MHz; VCC = supply voltage in V;  (CL × V

f

o

= 25°C; tr = tf ≤ 2.5ns

amb

controls the outputs so that the buses are

PARAMETER CONDITIONS TYPICAL UNIT

Propagation delay
An to Bn;
Bn to An

VCC = 2.5V, CL = 30pF
VCC = 3.3V, CL = 50pF

Input capacitance 4.0 pF
Input/output capacitance 8.0 pF

2

× fi +  (CL × V

CC

p

p

2

× fo) where: fi = input frequency in MHz; CL = output load capacitance in pF;

CC

p

PIN CONFIGURATION

=

I

CC

CC

2

× fo) = sum of the outputs.

74AL VC16245/

74AL VCH16245

1

1DIR

2

1B0

3

1B1

GND

4
5

1B2

6

1B3

7

V

CC1

8

1B4

9

1B5

GND

10
11

1B6

12

1B7

13

2B0

14

2B1

15

GND

16

2B2

17

2B3

18

V

CC1

19

2B4

20

2B5

21

GND

2B6

22

2B7

23
24

2DIR

Outputs enabled 29

Outputs disabled 5

48

47
46
45
44
43
42
41
40
39

38
37
36
35
34

33
32
31
30

29
28
27
26

25

SW00198

1OE

1A0
1A1
GND
1A2
1A3
V

CC2

1A4
1A5
GND

1A6
1A7
2A0
2A1
GND

2A2
2A3
V

CC2

2A4
2A5
GND
2A6
2A7

2OE

1.9 ns

p

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER

48-Pin Plastic SSOP Type III –40°C to +85°C 74ALVC16245 DL AC16245 DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ALVC16245 DGG AC16245 DGG SOT362-1
48-Pin Plastic SSOP Type III –40°C to +85°C 74ALVCH16245 DL ACH16245 DL SOT370-1
48-Pin Plastic TSSOP Type II –40°C to +85°C 74ALVCH16245 DGG ACH16245 DGG SOT362-1

1998 Jun 29 853-2083 19638

2

Philips Semiconductors Product specification

16-bit bus transceiver with direction pin (3-State)

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

1 1DIR Direction control

2, 3, 5, 6, 8, 9,

11, 12

4, 10, 15, 21,

28, 34, 39, 45

7, 18, 31, 42 V

13, 14, 16, 17,

19, 20, 22, 23

1B0 to 1B7 Data inputs/outputs

GND Ground (0V)

CC

Positive supply voltage

2B0 to 2B7 Data inputs/outputs
24 2DIR Direction control
25 2OE

36, 35, 33, 32,

30, 29, 27, 26

47, 46, 44, 43,

41, 40, 38, 37

48 1OE

2A0 to 2A7 Data inputs/outputs

1A0 to 1A7 Data inputs/outputs

Output enable input
(active LOW)

Output enable input
(active LOW)

LOGIC SYMBOL

1DIR

1A0

1A1

1A2

1

48

1OE

47

46

44

2

1B0

3

1B1

5

1B2

2DIR

2A0

2A1

2A2

24

36

35

33

25

2OE

13

2B0

14

2B1

16

2B2

LOGIC SYMBOL (IEEE/IEC)

1OE
1DIR

2OE

2DIR

1A0

1A1
1A2
1A3
1A4
1A5
1A6
1A7
2A0

2A1
2A2
2A3
2A4
2A5
2A6
2A7

74ALVC16245/

74ALVCH16245

48
1

25
24

47

46
44
43
41
40
38
37
36

35
33
32
30
29
27
26

G3
3 EN1 [BA]

3 EN2 [AB]
G6
6 EN4 [BA]
6 EN5 [AB]

1

4

2

1B0

2

5

3

1B1

5

1B2

6

1B3

8

1B4

9

1B5

11

1B6

12

1B7

13

2B0

14

2B1

16

2B2

17

2B3

19

2B4

20

2B5

22

2B6

23

2B7

43

1A3

41

1A4

40

1A5

38

1A6

37 12

1A7

6

1B3

8

1B4

9

1B5

11

1B6

1B7

32

2A3

30

2A4

29

2A5

27

2A6

26 23

2A7

FUNCTION TABLE

INPUTS INPUTS/OUTPUT

nOE nDIR nAn nBn

L L A = B inputs
L H inputs B = A

H X Z Z

H = HIGH voltage level
L = LOW voltage level
X = don’t care
Z = high impedance OFF-state

17

2B3

19

2B4

20

2B5

22

2B6

2B7

SW00197

BUS HOLD CIRCUIT

V

CC

Data Input

SW00196

To internal circuit

SW00044

1998 Jun 29

3