TEXAS INSTRUMENTS SN74AVCBH164245 Technical data

SN74AVCBH164245

16-BIT DUAL-SUPPLY BUS TRANSCEIVER

WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SCES393 – JUNE 2002

D

Member of the Texas Instruments
Widebus Family

D

DOC Circuitry Dynamically Changes
Output Impedance, Resulting in Noise
Reduction Without Speed Degradation

D

Dynamic Drive Capability Is Equivalent to
Standard Outputs With I
±24 mA at 2.5-V V

D

Control Inputs VIH/VIL Levels are
Referenced to V

D

If Either V

CC

CC

Voltage

CCB

Input Is at GND, Both Ports

and IOL of

OH

Are in the High-Impedance State

D

Overvoltage-Tolerant Inputs/Outputs Allow
Mixed-Voltage-Mode Data Communications

description

This 16-bit (dual-octal) noninverting bus transceiver uses two separate configurable power-supply rails. The
A-port is designed to track V
to track V

CCB

. V

accepts any supply voltage from 1.4 V to 3.6 V. This allows for universal low-voltage

CCB

bidirectional translation between any of the 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.

CCA

. V

accepts any supply voltage from 1.4 V to 3.6 V . The B-port is designed

CCA

D

I

Supports Partial-Power-Down Mode

off

Operation

D

Fully Configurable Dual-Rail Design Allows
Each Port to Operate Over the Full 1.4-V to

3.6-V Power Supply Range

D

Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors

D

Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II

D

ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)

The SN74AVCBH164245 is designed for asynchronous communication between data buses. The device
transmits data 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) input. The output-enable (OE

) input can be used to disable the outputs so the buses are

effectively isolated.
The SN74AVCBH164245 is designed so that the control pins (1DIR, 2DIR, 1OE

V

.

CCB

, and 2OE) are supplied by

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup
or pulldown resistors with the bus-hold circuitry is not recommended.

T o ensure the high-impedance state during power up or power down, OE

should be tied to V

through a pullup

CCB

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
This device is fully specified for partial-power-down applications using I

off

. The I

preventing damaging current backflow through the device when it is powered down. If either V

circuitry disables the outputs,

off

input is at GND,

CC

both ports are in the high-impedance state.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

DOC and Widebus are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Copyright  2002, Texas Instruments Incorporated

1

SN74AVCBH164245
16-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SCES393 – JUNE 2002

terminal assignments

DGG OR DGV PACKAGE

(TOP VIEW)

1

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
GND
1A3
1A4
V

CCA

1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
V

CCA

2A5
2A6
GND
2A7
2A8
2OE

1DIR

1B1
1B2

GND

1B3
1B4

V

CCB

1B5
1B6

GND

1B7
1B8
2B1
2B2

GND

2B3
2B4

V

CCB

2B5
2B6

GND

2B7
2B8

2DIR

2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

GQL PACKAGE

(TOP VIEW)

terminal assignments

213465

A
B
C
D
E
F
G
H
J
K

A 1DIR
B 1B2 1B1 GND GND 1A1 1A2
C 1B4 1B3 V
D 1B6 1B5 GND GND 1A5 1A6
E 1B8 1B7 1A7 1A8
F 2B1 2B2 2A2 2A1
G 2B3 2B4 GND GND 2A4 2A3
H 2B5 2B6 V
J 2B7 2B8 GND GND 2A8 2A7
K 2DIR NC NC NC NC 2OE

123456

NC NC NC NC 1OE

NC – No internal connection

CCB

CCB

V

V

CCA

CCA

1A3 1A4

2A6 2A5

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

OPERATION

WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

T

A

TSSOP – DGG Tape and reel SN74AVCBH164245GR AVCBH164245

–40°C to 85°C

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.

logic diagram (positive logic)

TVSOP – DGV Tape and reel SN74AVCBH164245VR WBH4245
VFBGA – GQL Tape and reel SN74AVCBH164245KR WBH4245

16-BIT DUAL-SUPPLY BUS TRANSCEIVER

ORDERING INFORMATION

PACKAGE

†

FUNCTION TABLE

(each 8-bit section)

INPUTS

DIR

OE

L L B data to A bus
L H A data to B bus

H X Isolation

ORDERABLE

PART NUMBER

SN74AVCBH164245

SCES393 – JUNE 2002

TOP-SIDE
MARKING

1

1DIR

47

1A1

To Seven Other Channels

Pin numbers shown are for the DGG and DGV packages.

48

24

2DIR

1OE

36

2A1

2

1B1

To Seven Other Channels

25

13

2OE

2B1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

3

SN74AVCBH164245
16-BIT DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPUTS

SCES393 – JUNE 2002

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

Supply voltage range, V
Input voltage range, V

Voltage range applied to any output in the high-impedance or power-off state, V

(see Note 1): (A port) –0.5 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(B port) –0.5 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Voltage range applied to any output in the high or low state, V

(see Notes 1 and 2): (A port) –0.5 V to V

Input clamp current, I

IK

Output clamp current, I
Continuous output current, I
Continuous current through V
Package thermal impedance, θ

Storage temperature range, T

†

Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES: 1. The input voltage and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.

2. The output positive-voltage rating may be exceeded up to 4.6 V maximum if the output current rating is observed.

3. The package thermal impedance is calculated in accordance with JESD 51-7.

and V

CCA

(see Note 1): I/O ports (A port) –0.5 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

–0.5 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CCB

I/O ports (B port) –0.5 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control inputs –0.5 V to 4.6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

O

(B port) –0.5 V to V

(VI < 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(VO < 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OK

±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

O

CCA

JA

, V

, or GND ±100 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CCB

(see Note 3): DGG package 70°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DGV package 58°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GQL package 28°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

stg

CCA
CCB

+ 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

+ 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

†

4

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