SN74LV245AT
OCTAL BUS TRANSCEIVER
WITH 3ĆSTATE OUTPUTS
SCLS605A − DECEMBER 2004 − MARCH 2005
D
D
D
Operation
Latch-Up Performance Exceeds 250 mA Per
JESD 17
ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 1000-V Charged-Device Model (C101)
DB, DGV, DW, NS, OR PW PACKAGE
(TOP VIEW)
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
1
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
20
2
DIR
1
11
A1
A2
A3
A4
A5
A6
A7
A8
20
19 OE
18 B1
2
3
17 B2
16 B3
4
5
15 B4
14 B5
6
7
13 B6
12 B7
8
9
10
11
GND
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
RGY PACKAGE
(TOP VIEW)
VCC
D
D Ioff Supports Partial-Power-Down Mode
Inputs Are TTL-Voltage Compatible
4.5-V to 5.5-V VCC Operation
Typical tpd of 3.5 ns at 5 V
Typical VOLP (Output Ground Bounce)
<0.8 V at VCC = 5 V, TA = 25°C
Typical VOHV (Output VOH Undershoot)
>2.3 V at VCC = 5 V, TA = 25°C
Supports Mixed-Mode Voltage Operation on
All Ports
B8
D
D
D
D
description/ordering information
This octal bus transceiver is designed for asynchronous two-way communication between data buses. The
control-function implementation minimizes external timing requirements.
The SN74LV245AT 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.
ORDERING INFORMATION
ORDERABLE
PART NUMBER
PACKAGE†
TA
QFN − RGY
TOP-SIDE
MARKING
Tape and reel
SN74LV245ATRGYR
Tube
SN74LV245ATDW
Tape and reel
SN74LV245ATDWR
SOP − NS
Tape and reel
SN74LV245ATNSR
74LV245A
SSOP − DB
Tape and reel
SN74LV245ATDBR
LV245A
TSSOP − PW
Tape and reel
SN74LV245ATPWR
LV245AT
TVSOP − DGV
Tape and reel
SN74LV245ATDGVR
SOIC − DW
−40 C 85°C
−40°C to 85 C
LV245A
LV245A
LV245A
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
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.
Copyright 2005, 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
1
