Philips 74ALVT16646DL, 74ALVT16646DGG Datasheet

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74ALVT16646

2.5V/3.3V 16-bus transceiver (3-State)

Product specification
Supersedes data of 1996 Aug 13
IC23 Data Handbook

1998 Feb 13

INTEGRATED CIRCUITS

Philips Semiconductors Product specification

74AL VT166462.5V/3.3V 16-bit bus transceiver (3-State)

2

1998 Feb 13 853-1856 18962

FEA TURES

•16-bit universal bus interface

•5V I/O Compatible

•3-State buffers

•Output capability: +64mA/-32mA

•TTL input and output switching levels

•Input and output interface capability to systems at 5V supply

•Bus-hold data inputs eliminate the need for external pull-up

resistors to hold unused inputs

•Live insertion/extraction permitted

•No bus current loading when output is tied to 5V bus

•Power-up reset

•Power-up 3-State

•Latch-up protection exceeds 500mA per JEDEC Std 17

•ESD protection exceeds 2000V per MIL STD 883 Method 3015

and 200V per Machine Model

DESCRIPTION

The 74ALVT16646 is a high-performance BiCMOS product
designed for V

CC

operation at 2.5V or 3.3V with I/O compatibility up

to 5V .
This device is a 16-bit transceiver featuring non-inverting 3-State

bus compatible outputs in both send and receive directions. The
control function implementation minimizes external timing
requirements. The device features an Output Enable (OE

) input for

easy cascading and a Direction (DIR) input for direction control.
Data on the A or B bus is clocked into the registers on the Low to

High transition of the appropriate clock (CPAB or CPBA). The
select-control (SAB and SBA) inputs can multiplex stored and
real-time (transparent mode data).

QUICK REFERENCE DA TA

CONDITIONS

TYPICAL

SYMBOL

PARAMETER

T

amb

= 25°C

2.5V 3.3V

UNIT

t

PLH

t

PHL

Propagation delay
nAx to nBx or nBx to nAx

CL = 50pF

2.2

2.3

1.7

1.8

ns

C

IN

Input capacitance DIR, OE VI = 0V or V

CC

3 3 pF

C

I/O

I/O pin capacitance V

I/O

= 0V or V

CC

9 9 pF

I

CCZ

Total supply current Outputs disabled 40 70 µA

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER

56-Pin Plastic SSOP Type III –40°C to +85°C 74ALVT166646 DL AV16646 DL SOT371-1
56-Pin Plastic TSSOP Type II –40°C to +85°C 74ALVT16646 DGG AV16646 DGG SOT364-1

Philips Semiconductors Product specification

74AL VT166462.5V/3.3V 16-bit bus transceiver (3-State)

1998 Feb 13

3

LOGIC SYMBOL (IEEE/IEC)

5

52

15

42

≥1

∇1

G3
3EN1 [BA]
3EN2 [AB]
G6
G7
C4
C5

5D 7
17

64D
6

1

≥1

2∇

56

1

54

3

55

2

6

8

9

10

12
13

14

51

49
48

47

45
44

43

16

17
19

20

21
23

24

41

40
38

37

36
34

33

29

28
31
26
31
27

G10
10EN8 [BA]
10EN9 [AB]
G13
G14

C11

C12

≥1
∇8

13 11D

13

1

≥1

9∇

12D 14

114

SW00157

Philips Semiconductors Product specification

74AL VT166462.5V/3.3V 16-bit bus transceiver (3-State)

1998 Feb 13

4

PIN CONFIGURATION

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26

56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32

31
27
28

30

29

1DIR

1CPAB

1SAB

GND

1A0
1A1

1A2
1A3

1A4

GND

1A5
1A6
1A7
2A0

2A2

GND

2A3

V

CC

2A1

2A4
2A5

2A6
2A7

2SAB

V

CC

GND

2CPAB

2DIR

1OE
1CPBA
1SBA
GND
1B0
1B1

1B2
1B3

1B4
GND
1B5
1B6
1B7
2B0

2B2
GND
2B3

V

CC

2B1

2B4
2B5

2B6
2B7

2SBA

V

CC

GND

2CPBA
20E

SH00026

LOGIC SYMBOL

2
3

1CPAB
1SAB

1 1DIR

55 1CPBA

27
26

2CPAB

2SAB
28 2DIR
30 2CPBA

54 1SBA
56 1OE

31 2SBA
29 2OE

5 9 10 12 13 1468

52 51 49 48 47 45 44 43

15 16 17 19 20 21 23 24

42 41 40 38 37 36 34 33

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

1B0 1B1 1B2 1B3 1B4 1B5 1B6 1B7

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

2B0 2B1 2B2 2B3 2B4 2B5 2B6 2B7

SH00027

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

2, 55, 27, 30 1CPAB, 1CPBA, 2CPAB, 2CPBA Clock input A to B / Clock input B to A
3, 54, 26, 31 1SAB, 1SBA, 2SAB, 2SBA Select input A to B / Select input B to A

1, 28 1DIR, 2DIR Direction control inputs

5, 6, 8, 9, 10, 12, 13, 14

15, 16, 17, 19, 20, 21, 23, 24

1A0 - 1A7,

2A0 - 2A7

Data inputs/outputs (A side)

52, 51, 49, 48, 47, 45, 44, 43
42, 41, 40, 38, 37, 36, 34, 33

1B0 - 1B7,

2B0 - 2B7

Data inputs/outputs (B side)

56, 29 1OE, 2OE Output enable inputs

4, 11, 18, 25, 32, 39, 46, 53 GND Ground (0V)

7, 22, 35, 50 V

CC

Positive supply voltage

Philips Semiconductors Product specification

74AL VT166462.5V/3.3V 16-bit bus transceiver (3-State)

1998 Feb 13

5

The following examples demonstrate the four fundamental
bus-management functions that can be performed with the
74ALVT16646.

}

REAL TIME BUS TRANSFER

BUS B TO BUS A

nOE nDIR nCPAB nCPBA nSAB nSBA

LLXXXL

}

REAL TIME BUS TRANSFER

BUS A TO BUS B

nOE nDIR nCPAB nCPBA nSAB nSBA

LH X X LX

}

STORAGE FROM

A, B, OR A AND B

nOE nDIR nCPAB nCPBA nSAB nSBA

LH ↑ XXX
LL X ↑ XX
HX ↑↑XX

}

TRANSFER STORED DATA

TO A OR B

nOE nDIR nCPAB nCPBA nSAB nSBA

L L X H | L X H
L H H | L X H X

ABAB AB

AB

SH00028