SN54LVTH244A, SN74LVTH244A
3.3 V ABT OCTAL BUFFERS/DRIVERS
WITH 3 STATE OUTPUTS
SCAS586J - DECEMBER 1996 - REVISED OCTOBER 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)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1OE
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
GND
V
CC
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
SN54LVTH244A . . . J OR W PACKAGE
SN74LVTH244A . . . 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
1Y1
2A4
1Y2
2A3
1Y3
1A2
2Y3
1A3
2Y2
1A4
SN54LVTH244A . . . FK PACKAGE
(TOP VIEW)
2Y4
1A1
1OE
1Y4
2A2
2OE
2Y1
GND
2A1
V
CC
SN74LVTH244A . . . RGY PACKAGE
(TOP VIEW)
1
20
10
11
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
2OE
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
2A1
V
G
ND
CC
1OE
description/ordering information
These octal buffers and line drivers 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
SN74LVTH244ARGYR
LXH244A
SOIC - DW
Tube
SN74LVTH244ADW
LVTH244A
SOIC - DW
Tape and reel
SN74LVTH244ADWR
LVTH244A
-40
C to 85
C
SOP - NS
Tape and reel
SN74LVTH244ANSR
LVTH244A
-40
C to 85
C
SSOP - DB
Tape and reel
SN74LVTH244ADBR
LXH244A
TSSOP - PW
Tape and reel
SN74LVTH244APWR
LXH244A
VFBGA - GQN
Tape and reel
SN74LVTH244AGQNR
LXH244A
VFBGA - ZQN (Pb-free)
Tape and reel
SN74LVTH244AZQNR
LXH244A
CDIP - J
Tube
SNJ54LVTH244AJ
SNJ54LVTH244AJ
-55
C to 125
C
CFP - W
Tube
SNJ54LVTH244AW
SNJ54LVTH244AW
-55 C to 125 C
LCCC - FK
Tube
SNJ54LVTH244AFK
SNJ54LVTH244AFK
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
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.
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.
SN54LVTH244A, SN74LVTH244A
3.3 V ABT OCTAL BUFFERS/DRIVERS
WITH 3 STATE OUTPUTS
SCAS586J - DECEMBER 1996 - REVISED OCTOBER 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
The 'LVTH244A devices are organized as two 4-bit line drivers with separate output-enable (OE) inputs. When
OE is low, the devices pass data from the A inputs to the Y outputs. When OE is high, the outputs are in the
high-impedance state.
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
1A1
1OE
VCC
2OE
B
1A2
2A4
2Y4
1Y1
C
1A3
2Y3
2A3
1Y2
D
1A4
2A2
2Y2
1Y3
E
GND
2Y1
2A1
1Y4
FUNCTION TABLE
(each buffer)
INPUTS
OUTPUT
OE
A
OUTPUT
Y
L
H
H
L
L
L
H
X
Z
SN74LVTH244A . . . GQN OR ZQN PACKAGE
(TOP VIEW)
1
2
3
4
A
B
C
D
E
SN54LVTH244A, SN74LVTH244A
3.3 V ABT OCTAL BUFFERS/DRIVERS
WITH 3 STATE OUTPUTS
SCAS586J - DECEMBER 1996 - REVISED OCTOBER 2003
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
logic diagram (positive logic)
1
2
18
1Y1
1OE
1A1
4
16
1Y2
1A2
6
14
1Y3
1A3
8
12
1Y4
1A4
19
11
9
2Y1
2OE
2A1
13
7
2Y2
2A2
15
5
2Y3
2A3
17
3
2Y4
2A4
Pin numbers shown are for the DB, DW, FK, J, NS, PW, RGY, and W packages.
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
: SN54LVTH244A 96
mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74LVTH244A 128
mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current into any output in the high state, I
O
(see Note 2): SN54LVTH244A
48 mA
. . . . . . . . . . . . . . . . . . . . . .
SN74LVTH244A 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.
SN54LVTH244A, SN74LVTH244A
3.3 V ABT OCTAL BUFFERS/DRIVERS
WITH 3 STATE OUTPUTS
SCAS586J - DECEMBER 1996 - REVISED OCTOBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 5)
SN54LVTH244A
SN74LVTH244A
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.
SN54LVTH244A, SN74LVTH244A
3.3 V ABT OCTAL BUFFERS/DRIVERS
WITH 3 STATE OUTPUTS
SCAS586J - DECEMBER 1996 - REVISED OCTOBER 2003
5
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54LVTH244A
SN74LVTH244A
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 = 0 or 3.6 V,
VI = 5.5 V
50
10
II
Control inputs
VCC = 3.6 V,
VI = VCC or GND
1
1
A
II
Data inputs
VCC = 3.6 V
VI = VCC
1
1
A
Data inputs
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)
Data inputs
VCC = 3 V
VI = 2 V
-75
-75
A
II(hold)
Data inputs
VCC = 3.6 V,
VI = 0 to 3.6 V
500
-750
A
IOZH
VCC = 3.6 V,
VO = 3 V
5
5
A
IOZL
VCC = 3.6 V,
VO = 0.5 V
-5
-5
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
0.39
0.19
ICC
VCC = 3.6 V,
IO = 0,
V = V
or GND
Outputs low
14
5
mA
ICC
IO = 0,
VI = VCC or GND
Outputs disabled
0.39
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
3
3
pF
Co
VO = 3 V or 0
7
7
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.
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.
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