2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCES070G – JUNE 1996 – REVISED MA Y 1999
D
Members of the Texas Instruments
Widebus
D
State-of-the-Art Advanced BiCMOS
Family
Technology (ABT) Design for 3.3-V
Operation and Low Static-Power
Dissipation
D
5-V I/O Compatible
D
High Drive Capability (–32 mA/64 mA)
D
Support Mixed-Mode Signal Operation (5-V
Input and Output Voltages With 3.3-V V
D
Support Unregulated Battery Operation
Down to 2.3 V
D
Typical V
< 0.8 V at V
D
Auto3-State Eliminates Bus Current
(Output Ground Bounce)
OLP
= 3.3 V, TA = 25°C
CC
Loading When Voltage at the Output
Exceeds V
D
I
off
and Power-Up 3-State Support Hot
CC
Insertion
D
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
D
Latch-Up Performance Exceeds 250 mA Per
JESD 17
D
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
D
Package Options Include Plastic 300-mil
Shrink Small-Outline (DL), Thin Shrink
Small-Outline (DGG), Thin Very
Small-Outline (DGV) Packages, and 380-mil
Fine-Pitch Ceramic Flat (WD) Package
NOTE: For tape and reel order entry:
The DGGR package is abbreviated to GR, and
the DGVR package is abbreviated to VR.
CC
SN54ALVTH16244.. . WD PACKAGE
SN74ALVTH16244.. . DGG, DGV, OR DL PACKAGE
)
1OE
1Y1
1Y2
GND
1Y3
1Y4
V
CC
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
V
CC
4Y1
4Y2
GND
4Y3
4Y4
4OE
(TOP VIEW)
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
12
37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
2OE
1A1
1A2
GND
1A3
1A4
V
CC
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
V
CC
4A1
4A2
GND
4A3
4A4
3OE
description
The ’ALVTH16244 devices are 16-bit buffers/line drivers designed for 2.5-V or 3.3-V VCC operation, but with
the capability to provide a TTL interface to a 5-V system environment. These devices can be used as four 4-bit
buffers, two 8-bit buffers, or one 16-bit buffer.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
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 Incorporated.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information 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 1999, Texas Instruments Incorporated
1
Page 2
SN54ALVTH16244, SN74ALVTH16244
2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCES070G – JUNE 1996 – REVISED MA Y 1999
description (continued)
When VCC is between 0 and 1.2 V , the device is in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 1.2 V, the output-enable (OE
through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of
the driver.
) input should be tied to V
CC
These devices are fully specified for hot-insertion applications using I
and power-up 3-state. The I
off
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.
The SN54ALVTH16244 is characterized for operation over the full military temperature range of –55°C to
125°C. The SN74ALVTH16244 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
(each buffer)
INPUTS
OE
LHH
LLL
HXZ
OUTPUT
A
Y
logic diagram (positive logic)
1OE
1A1
1A2
1
47
46
2
1Y1
3
1Y2
3OE
3A1
3A2
25
36
35
13
14
3Y1
3Y2
circuitry
off
1A3
1A4
2OE
2A1
2A2
2A3
2A4
44
43
48
41
40
38
37
11
12
5
1Y3
6
1Y4
8
2Y1
9
2Y2
2Y3
2Y4
3A3
3A4
4OE
4A1
4A2
4A3
4A4
33
32
24
30
29
27
26
16
17
19
20
22
23
3Y3
3Y4
4Y1
4Y2
4Y3
4Y4
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Page 3
UNIT
I
mA
SN54ALVTH16244, SN74ALVTH16244
2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCES070G – JUNE 1996 – REVISED MA Y 1999
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
Input voltage range, V
Voltage range applied to any output in
or power-off state, V
Voltage range applied to any output in the high state, V
Output current in the low state, I
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. The package thermal impedance is calculated in accordance with JESD 51.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
Page 4
SN54ALVTH16244, SN74ALVTH16244
UNIT
I
mA
2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCES070G – JUNE 1996 – REVISED MA Y 1999
recommended operating conditions, VCC = 3.3 V ± 0.3 V (see Note 3)
SN54ALVTH16244 SN74ALVTH16244
MINMAXMINMAX
V
CC
V
IH
V
IL
V
I
I
OH
OL
∆t/∆vInput transition rise or fall rateOutputs enabled1010ns/V
∆t/∆V
T
A
NOTE 3: 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,
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Page 5
PARAMETER
TEST CONDITIONS
UNIT
V
V
V
V
Control inputs
I
A
Data inputs
V
2.7 V
(
)
V
V
I(hold)
V
CC
SN54ALVTH16244, SN74ALVTH16244
2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCES070G – JUNE 1996 – REVISED MA Y 1999
electrical characteristics over recommended operating free-air temperature range,
= 2.5 V ± 0.2 V (unless otherwise noted)
V
CC
SN54ALVTH16244SN74ALVTH16244
MIN TYP†MAXMIN TYP†MAX
V
IK
V
OH
V
OL
I
p
I
off
hold
i
o
Data inputs
§
¶
I
I
I
EX
I
OZ(PU/PD)
I
OZH
I
OZL
I
CC
C
C
†
All typical values are at VCC = 2.5 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.
§
Current into an output in the high state when VO > V
¶
High-impedance state during power up/power down
VCC = 2.3 V,II = –18 mA–1.2–1.2V
VCC = 2.3 V to 2.7 V,IOH = –100 µAVCC–0.2VCC–0.2
= 2.3
CC
VCC = 2.3 V to 2.7 V,IOL = 100 µA0.20.2
= 2.3
CC
VCC = 2.7 V,VI = VCC or GND±1±1
p
VCC = 0 or 2.7 V,VI = 5.5 V1010
=
CC
VCC = 0,VI or VO = 0 to 4.5 V±100µA
= 2.3
CC
VCC = 2.7 V‡,VI = 0 to 2.7 V±300±300
VCC = 2.3 V,VO = 5.5 V125125µA
VCC ≤ 1.2 V, VO = 0.5 V to VCC,
VI = GND or VCC, OE
VCC = 2.7 V
VCC = 2.7 V
=
= 2.7 V,
IO = 0,
VI = VCC or GND
VCC = 2.5 V,VI = 2.5 V or 033pF
VCC = 2.5 V,VO = 2.5 V or 066pF
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
5
Page 6
SN54ALVTH16244, SN74ALVTH16244
PARAMETER
TEST CONDITIONS
UNIT
V
V
V
V
Control inputs
)
V
V
I(hold)
V
CC
2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCES070G – JUNE 1996 – REVISED MA Y 1999
electrical characteristics over recommended operating free-air temperature range,
= 3.3 V ± 0.3 V (unless otherwise noted)
V
CC
SN54ALVTH16244SN74ALVTH16244
MIN TYP†MAXMIN TYP†MAX
V
IK
V
OH
OL
I
I
Data inputsVCC = 3.6 V
I
off
CC
i
o
Data inputs
§
¶
#
I
I(hold
I
EX
I
OZ(PU/PD)
I
OZH
I
OZL
I
CC
∆I
C
C
†
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.
§
Current into an output in the high state when VO > V
¶
High-impedance state during power up/power down
#
This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
VCC = 3 V,II = –18 mA–1.2–1.2V
VCC = 3 V to 3.6 V,IOH = –100 µAVCC–0.2VCC–0.2
= 3
CC
VCC = 3 V to 3.6 V,IOL = 100 µA0.20.2
VCC = 3 V
VCC = 3.6 V,VI = VCC or GND±1±1
p
VCC = 0 or 3.6 V,VI = 5.5 V1010
VCC = 0,VI or VO = 0 to 4.5 V±100µA
= 3
CC
VCC = 3.6 V‡,VI = 0 to 3.6 V±500±500
VCC = 3 V,VO = 5.5 V125125µA
VCC ≤ 1.2 V, VO = 0.5 V to VCC,
VI = GND or VCC, OE
VCC = 3.6 V
VCC = 3.6 V
=
= 3.6 V,
IO = 0,
VI = VCC or GND
VCC = 3 V to 3.6 V, One input at VCC – 0.6 V,
Other inputs at VCC or GND
VCC = 3.3 V,VI = 3.3 V or 033pF
VCC = 3.3 V,VO = 3.3 V or 066pF
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Page 7
PARAMETER
UNIT
A
Y
ns
OE
Y
ns
OE
Y
ns
PARAMETER
UNIT
A
Y
ns
OE
Y
ns
OE
Y
ns
SN54ALVTH16244, SN74ALVTH16244
2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCES070G – JUNE 1996 – REVISED MA Y 1999
switching characteristics over recommended operating free-air temperature range, CL = 30 pF,
= 2.5 V ± 0.2 V (unless otherwise noted) (see Figure 1)
V
CC
FROMTO
(INPUT)(OUTPUT)
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
switching characteristics over recommended operating free-air temperature range, CL = 50 pF,
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 2)
V
CC
FROMTO
(INPUT)(OUTPUT)
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
SN54ALVTH16244 SN74ALVTH16244
MINMAXMINMAX
13.113
13.613.5
1.161.15.9
1.14.81.14.7
1.54.51.54.4
13.513.4
SN54ALVTH16244 SN74ALVTH16244
MINMAXMINMAX
12.612.4
12.612.5
13.913.8
1312.9
1.54.31.54.2
1.53.71.53.6
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
7
Page 8
SN54ALVTH16244, SN74ALVTH16244
2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
WITH 3-STATE OUTPUTS
SCES070G – JUNE 1996 – REVISED MA Y 1999
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
CL = 30 pF
(see Note A)
500 Ω
500 Ω
S1
V
= 2.5 V ± 0.2 V
CC
2 × V
CC
Open
GND
TESTS1
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
Open
2 × V
GND
CC
LOAD CIRCUIT
Timing
Input
t
Data
Input
Input
t
PLH
Output
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2 ns, tf ≤ 2 ns.
D. The outputs are measured one at a time with one transition per measurement.
VCC/2
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VCC/2VCC/2
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VCC/2
t
su
h
VCC/2
VCC/2VCC/2
t
PHL
V
0 V
V
0 V
V
0 V
V
V
CC
CC
CC
OH
OL
Input
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 2 × V
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
VOLTAGE WAVEFORMS
PULSE DURATION
t
PZL
CC
t
PZH
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
VCC/2
VCC/2
t
w
V
0 V
V
0 V
V
V
V
0 V
CC
CC
CC
OL
OH
VCC/2VCC/2
VCC/2VCC/2
t
PLZ
VOL + 0.15 V
t
PHZ
VOH – 0.15 V
Figure 1. Load Circuit and Voltage Waveforms
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Page 9
From Output
Under Test
CL = 50 pF
(see Note A)
SN54ALVTH16244, SN74ALVTH16244
2.5-V/3.3-V 16-BIT BUFFERS/DRIVERS
SCES070G – JUNE 1996 – REVISED MA Y 1999
PARAMETER MEASUREMENT INFORMATION
V
= 3.3 V ± 0.3 V
CC
6 V
500 Ω
500 Ω
S1
Open
GND
TESTS1
t
PLH/tPHL
t
PLZ/tPZL
t
PHZ/tPZH
WITH 3-STATE OUTPUTS
Open
6 V
GND
LOAD CIRCUIT
Timing
Input
Data
Input
Input
Output
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤10 MHz, ZO = 50 Ω, tr ≤2.5 ns, tf ≤2.5 ns.
D. The outputs are measured one at a time with one transition per measurement.
1.5 V1.5 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
1.5 V1.5 V
VOLTAGE WAVEFORMS
1.5 V
t
su
t
h
t
PLH
1.5 V1.5 V
t
PHL
3 V
0 V
3 V
0 V
3 V
0 V
V
V
OH
OL
Input
Output Control
Output
Waveform 1
S1 at 6 V
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
t
w
1.5 V1.5 V
VOLTAGE WAVEFORMS
PULSE DURATION
1.5 V1.5 V
t
PZL
1.5 V
t
PZH
1.5 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
VOL + 0.3 V
VOH – 0.3 V
t
PLZ
t
PHZ
3 V
0 V
3 V
0 V
3 V
V
OL
V
OH
≈ 0 V
Figure 2. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
9
Page 10
IMPORTANT NOTICE
T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERT AIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICA TIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERST OOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1999, Texas Instruments Incorporated
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