SN54LVTH245A, SN74LVTH245A
3.3 V ABT OCTAL BUS TRANSCEIVERS
WITH 3 STATE OUTPUTS
SCBS130T - MAY 1992 - REVISED SEPTEMBER 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D
Support Mixed-Mode Signal Operation (5-V
Input and Output Voltages With 3.3-V V
CC
)
D
Typical V
OLP
(Output Ground Bounce)
<0.8 V at V
CC
= 3.3 V, T
A
= 25
C
D
Support Unregulated Battery Operation
Down to 2.7 V
D
I
off
and Power-Up 3-State Support Hot
Insertion
D
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D
Latch-Up Performance Exceeds 500 mA Per
JESD 17
D
ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
SN54LVTH245A . . . J OR W PACKAGE
SN74LVTH245A . . . DB, DW, NS,
OR PW PACKAGE
(TOP VIEW)
3
2
1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
B1
B2
B3
B4
B5
A3
A4
A5
A6
A7
A2
A1
DIR
B7
B6
OE
A8
GND
B8
V
CC
SN54LVTH245A . . . FK PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
V
CC
OE
B1
B2
B3
B4
B5
B6
B7
B8
SN74LVTH245A . . . RGY PACKAGE
(TOP VIEW)
1
20
10
11
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
OE
B1
B2
B3
B4
B5
B6
B7
A1
A2
A3
A4
A5
A6
A7
A8
B8
V
GND
CC
DIR
description/ordering information
These octal bus transceivers are designed specifically for low-voltage (3.3-V) V
CC
operation, but with the
capability to provide a TTL interface to a 5-V system environment.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE MARKING
QFN - RGY
Tape and reel
SN74LVTH245ARGYR
LXH245A
SOIC - DW
Tube
SN74LVTH245ADW
LVTH245A
SOIC - DW
Tape and reel
SN74LVTH245ADWR
LVTH245A
SOP - NS
Tape and reel
SN74LVTH245ANSR
LVTH245A
-40
C to 85
C
SSOP - DB
Tape and reel
SN74LVTH245ADBR
LXH245A
-40 C to 85 C
TSSOP - PW
Tube
SN74LVTH245APW
LXH245A
TSSOP - PW
Tape and reel
SN74LVTH245APWR
LXH245A
VFBGA - GQN
Tape and reel
SN74LVTH245AGQNR
LXH245A
VFBGA - ZQN (Pb-free)
Tape and reel
SN74LVTH245AZQNR
LXH245A
CDIP - J
Tube
SNJ54LVTH245AJ
SNJ54LVTH245AJ
-55
C to 125
C
CFP - W
Tube
SNJ54LVTH245AW
SNJ54LVTH245AW
-55 C to 125 C
LCCC - FK
Tube
SNJ54LVTH245AFK
SNJ54LVTH245AFK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
Copyright
2003, 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.
On products compliant to MIL PRF 38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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.
SN54LVTH245A, SN74LVTH245A
3.3 V ABT OCTAL BUS TRANSCEIVERS
WITH 3 STATE OUTPUTS
SCBS130T - MAY 1992 - REVISED SEPTEMBER 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
These devices are designed for asynchronous communication between data buses. They transmit 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 devices so the buses are effectively isolated.
To ensure the high-impedance state during power up or power down, OE should be tied to V
CC
through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
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.
These devices are fully specified for hot-insertion applications using I
off
and power-up 3-state. The I
off
circuitry
disables the outputs, preventing damaging current backflow through the devices when they are powered down.
The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,
which prevents driver conflict.
terminal assignments
1
2
3
4
A
A1
DIR
VCC
OE
B
A3
B2
A2
B1
C
A5
A4
B4
B3
D
A7
B6
A6
B5
E
GND
A8
B8
B7
FUNCTION TABLE
INPUTS
OPERATION
OE
DIR
OPERATION
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
logic diagram (positive logic)
DIR
OE
A1
B1
To Seven Other Channels
1
2
19
18
Pin numbers shown are for the DB, DW, FK, J, NS, PW, RGY, and W packages.
SN74LVTH245A . . . GQN OR ZQN PACKAGE
(TOP VIEW)
1
2
3
4
A
B
C
D
E
SN54LVTH245A, SN74LVTH245A
3.3 V ABT OCTAL BUS TRANSCEIVERS
WITH 3 STATE OUTPUTS
SCBS130T - MAY 1992 - REVISED SEPTEMBER 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
CC
-0.5 V to 4.6 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage range, V
I
(see Note 1)
-0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high-impedance
or power-off state, V
O
(see Note 1)
-0.5 V to 7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage range applied to any output in the high state, V
O
(see Note 1)
-0.5 V to V
CC
+ 0.5 V
. . . . . . . . . . . . .
Current into any output in the low state, I
O
: SN54LVTH245A 96
mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74LVTH245A 128
mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the high state, I
O
(see Note 2): SN54LVTH245A
48 mA
. . . . . . . . . . . . . . . . . . . . . .
SN74LVTH245A 64
mA
. . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0)
-50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0)
-50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
JA
(see Note 3): DB package
70
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 3): DW package
58
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 3): GQN/ZQN package
78
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 3): NS package
60
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 3): PW package
83
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(see Note 4): RGY package
37
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
-65
C to 150
C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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 and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. This current flows only when the output is in the high state and VO > VCC.
3. The package thermal impedance is calculated in accordance with JESD 51-7.
4. The package thermal impedance is calculated in accordance with JESD 51-5.
recommended operating conditions (see Note 5)
SN54LVTH245A
SN74LVTH245A
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
2.7
3.6
2.7
3.6
V
VIH
High-level input voltage
2
2
V
VIL
Low-level input voltage
0.8
0.8
V
VI
Input voltage
5.5
5.5
V
IOH
High-level output current
-24
-32
mA
IOL
Low-level output current
48
64
mA
t/
v
Input transition rise or fall rate
Outputs enabled
10
10
ns/V
t/
VCC
Power-up ramp rate
200
200
s/V
TA
Operating free-air temperature
-55
125
-40
85
C
NOTE 5: All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
SN54LVTH245A, SN74LVTH245A
3.3 V ABT OCTAL BUS TRANSCEIVERS
WITH 3 STATE OUTPUTS
SCBS130T - MAY 1992 - REVISED SEPTEMBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54LVTH245A
SN74LVTH245A
UNIT
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
VIK
VCC = 2.7 V,
II = -18 mA
-1.2
-1.2
V
VCC = 2.7 V to 3.6 V,
IOH = -100
A
VCC-0.2
VCC-0.2
VOH
VCC = 2.7 V,
IOH = -8 mA
2.4
2.4
V
VOH
VCC = 3 V
IOH = -24 mA
2
V
VCC = 3 V
IOH = -32 mA
2
VCC = 2.7 V
IOL = 100
A
0.2
0.2
VCC = 2.7 V
IOL = 24 mA
0.5
0.5
VOL
IOL = 16 mA
0.4
0.4
V
VOL
VCC = 3 V
IOL = 32 mA
0.5
0.5
V
VCC = 3 V
IOL = 48 mA
0.55
IOL = 64 mA
0.55
Control inputs
VCC = 3.6 V,
VI = VCC or GND
1
1
Control inputs
VCC = 0 or 3.6 V,
VI = 5.5 V
10
10
II
VI = 5.5 V
20
20
A
II
A or B ports
VCC = 3.6 V
VI = VCC
1
1
A
A or B ports
VCC = 3.6 V
VI = 0
-5
-5
Ioff
VCC = 0,
VI or VO = 0 to 4.5 V
100
A
VCC = 3 V
VI = 0.8 V
75
75
II(hold)
A or B ports
VCC = 3 V
VI = 2 V
-75
-75
A
II(hold)
A or B ports
VCC = 3.6 V,
VI = 0 to 3.6 V
500
-750
A
IOZPU
VCC = 0 to 1.5 V, VO = 0.5 V to 3 V,
OE = don't care
100
100
A
IOZPD
VCC = 1.5 V to 0, VO = 0.5 V to 3 V,
OE = don't care
100
100
A
VCC = 3.6 V,
Outputs high
0.19
0.19
ICC
VCC = 3.6 V,
IO = 0,
V = V
or GND
Outputs low
5
5
mA
ICC
IO = 0,
VI = VCC or GND
Outputs disabled
0.19
0.19
mA
ICC
VCC = 3 V to 3.6 V, One input at VCC - 0.6 V,
Other inputs at VCC or GND
0.2
0.2
mA
Ci
VI = 3 V or 0
4
4
pF
Cio
VO = 3 V or 0
9
9
pF
On products compliant to MIL-PRF-38535, this parameter is not production tested.
All typical values are at VCC = 3.3 V, TA = 25
C.
Unused terminals are at VCC or GND.
This is the bus-hold maximum dynamic current. It is the minimum overdrive current required to switch the input from one state to another.
This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND.
SN54LVTH245A, SN74LVTH245A
3.3 V ABT OCTAL BUS TRANSCEIVERS
WITH 3 STATE OUTPUTS
SCBS130T - MAY 1992 - REVISED SEPTEMBER 2003
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
SN54LVTH245A
SN74LVTH245A
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 3.3 V
0.3 V
VCC = 2.7 V
VCC = 3.3 V
0.3 V
VCC = 2.7 V
UNIT
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
MIN
TYP
MAX
MIN
MAX
tPLH
A or B
B or A
0.7
3.7
4.2
1.2
2.3
3.5
4
ns
tPHL
A or B
B or A
0.7
3.7
4.2
1.2
2.1
3.5
4
ns
tPZH
OE
A or B
1.2
5.7
7.4
1.3
3.2
5.5
7.1
ns
tPZL
OE
A or B
1.6
5.7
6.8
1.7
3.4
5.5
6.5
ns
tPHZ
OE
A or B
1.8
6.2
6.8
2.2
3.5
5.9
6.5
ns
tPLZ
OE
A or B
1.8
5.3
5.5
2.2
3.4
5
5.1
ns
All typical values are at VCC = 3.3 V, TA = 25
C.
PDF 
ZIP