SN74LVCZ16245A
16-BIT BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES278D – JUNE 1999 – REVISED AUGUST 2002
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Member of the Texas Instruments
Widebus Family
Operates From 2.7 V to 3.6 V
Inputs Accept Voltages to 5.5 V
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
1DIR
1B1
1B2
GND
1B3
1B4
1OE
1A1
1A2
GND
1A3
1A4
2
3
Max t of 3.7 ns at 3.3 V
pd
4
I
and Power-Up 3-State Support Hot
off
5
Insertion
6
Supports Mixed-Mode Signal Operation on
All Ports (5-V Input/Output Voltage With
7
V
V
CC
CC
8
1B5
1B6
GND
1B7
1B8
2B1
2B2
GND
2B3
2B4
1A5
1A6
GND
1A7
1A8
2A1
2A2
GND
2A3
2A4
3.3-V V
)
CC
9
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 1000-V Charged-Device Model (C101)
description/ordering information
This 16-bit (dual-octal) noninverting bus
transceiver is designed for 2.7-V to 3.6-V V
operation.
V
V
CC
CC
CC
2B5
2B6
GND
2B7
2B8
2A5
2A6
GND
2A7
2A8
2OE
The SN74LVCZ16245A is designed for
asynchronous communication between data
buses. The control-function implementation
minimizes external timing requirements.
2DIR
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) input. The output-enable (OE) input can be used to disable the device so that the buses
are effectively isolated.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators
in a mixed 3.3-V/5-V system environment.
When V
is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down.
CC
However, to ensure the high-impedance state above 1.5 V, OE should be tied to V
the minimum value of the resistor is determined by the current-sinking capability of the driver.
through a pullup resistor;
CC
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
Tube
SN74LVCZ16245ADL
SSOP – DL
LVCZ16245A
Tape and reel
SN74LVCZ16245ADLR
SN74LVCZ16245ADGGR
SN74LVCZ16245ADGVR
–40°C to 85°C
TSSOP – DGG Tape and reel
TVSOP – DGV Tape and reel
LVCZ16245A
CW245A
†
Packagedrawings,standardpackingquantities,thermaldata,symbolization,andPCBdesignguidelines
are available at www.ti.com/sc/package.
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.
Widebus is a trademark of Texas Instruments.
Copyright 2002, Texas Instruments Incorporated
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.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265