Texas Instruments SN74LVCC4245ADWR, SN74LVCC4245APWLE, SN74LVCC4245APWR, SN74LVCC4245ADBLE, SN74LVCC4245ADBR Datasheet
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OPERATION
SN74LVCC4245A
OCTAL DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE OUTPUT VOLTAGE AND 3-STATE OUTPUTS
SCAS584F – NOVEMBER 1996 – REVISED AUGUST 1998
D
EPIC
(Enhanced-Performance Implanted
CMOS) Submicron Process
D
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015
D
Latch-Up Performance Exceeds 250 mA Per
JESD 17
D
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages
description
This 8-bit (octal) noninverting bus transceiver
uses two separate power-supply rails. The A port,
V
, is dedicated to accept a 5-V supply level,
CCA
and the configurable B port, which is designed to
track V
, accepts voltages from 3 V to 5 V . This
CCB
DB, DW, OR PW PACKAGE
(TOP VIEW)
V
GND
GND
NC – No internal connection
CCA
DIR
A1
A2
A3
A4
A5
A6
A7
A8
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
V
CCB
NC
OE
B1
B2
B3
B4
B5
B6
B7
B8
GND
allows for translation from a 3.3-V to a 5-V
environment and vice versa.
The SN74LVCC4245A 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 device so the buses are
effectively isolated.
The SN74LVCC4245A is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
OE DIR
L L B data to A bus
L H A data to B bus
H X Isolation
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.
EPIC is a trademark of 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.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1998, Texas Instruments Incorporated
1
SN74LVCC4245A
OCTAL DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE OUTPUT VOLTAGE AND 3-STATE OUTPUTS
SCAS584F – NOVEMBER 1996 – REVISED AUGUST 1998
logic diagram (positive logic)
2
DIR
22
OE
3
A1
21
B1
To Seven Other Channels
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
Input voltage range, V
Output voltage range, 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. This value is limited to 6 V maximum.
2. The package thermal impedance is calculated in accordance with JESD 51.
and V
CCA
(see Note 1): I/O ports (A port) –0.5 V to V
I
(see Note 1): (A port) –0.5 V to V
O
(VI < 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(VO < 0) –50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OK
±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
O
CCA
JA
–65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
stg
–0.5 V to 6 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CCB
I/O ports (B port) –0.5 V to V
Except I/O ports –0.5 V to V
(B port) –0.5 V to V
, V
(see Note 2): DB package 104°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
, or GND ±100 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CCB
DW package 81°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package 120°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CCA
CCB
CCA
CCA
CCB
+ 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . .
+ 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . .
+ 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . .
+ 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+ 0.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
4.5 V
4.5 V
4.5 V
4.5 V
SN74LVCC4245A
OCTAL DUAL-SUPPLY BUS TRANSCEIVER
WITH CONFIGURABLE OUTPUT VOLTAGE AND 3-STATE OUTPUTS
SCAS584F – NOVEMBER 1996 – REVISED AUGUST 1998
recommended operating conditions (see Note 3)
V
CCA
V
V
V
V
V
V
V
V
V
V
I
OHA
I
OHB
I
OLA
I
OLB
T
NOTE 3: All unused inputs of the device must be held at the associated VCC or GND to ensure proper device operation. Refer to the TI application
Supply voltage 4.5 5 5.5 V
CCA
Supply voltage 2.7 3.3 5.5 V
CCB
High-level input voltage VOB ≤ 0.1 V, VOB ≥ V
IHA
High-level input voltage VOA ≤ 0.1 V, VOA ≥ V
IHB
Low-level input voltage VOB ≤ 0.1 V, VOB ≥ V
ILA
Low-level input voltage VOA ≤ 0.1 V, VOA ≥ V
ILB
Input voltage 0 V
IA
Input voltage 0 V
IB
Output voltage 0 V
OA
Output voltage 0 V
OB
High-level output current 4.5 V 3 V –24 mA
High-level output current 4.5 V 2.7 V to 4.5 V –24 mA
Low-level output current 4.5 V 3 V 24 mA
Low-level output current 4.5 V 2.7 V to 4.5 V 24 mA
Operating free-air temperature –40 85 °C
A
report,
Implications of Slow or Floating CMOS Inputs
– 0.1 V
CCB
5.5 V 5.5 V 2
– 0.1 V
CCA
5.5 V 5.5 V 3.85
– 0.1 V
CCB
5.5 V 5.5 V 0.8
– 0.1 V
CCA
5.5 V 5.5 V 1.65
, literature number SCBA004.
V
CCB
2.7 V 2
3.6 V 2
2.7 V 2
3.6 V 2
2.7 V 0.8
3.6 V 0.8
2.7 V 0.8
3.6 V 0.8
MIN NOM MAX UNIT
CCA
CCB
CCA
CCB
V
V
V
V
V
V
V
V
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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