TI SN74LVTH2245DB

SN54LVTH2245, SN74LVTH2245
3.3-V ABT OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS707C – SEPTEMBER 1997 – REVISED APRIL 1999
D
D
D
D
D
D
D
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VCC
OE
B1
B2
B3
B4
B5
B6
B7
B8
SN54LVTH2245 . . . FK PACKAGE
(TOP VIEW)
A3
A4
A5
A6
A7
OE
D
SN54LVTH2245 . . . J OR W PACKAGE
SN74LVTH2245 . . . DB, DW, OR PW PACKAGE
(TOP VIEW)
A2
A1
DIR
VCC
D
State-of-the-Art Advanced BiCMOS
Technology (ABT) Design for 3.3-V
Operation and Low Static-Power
Dissipation
B-Port Outputs Have Equivalent 22-Ω
Series Resistors, So No External Resistors
Are Required
Ioff and Power-Up 3-State Support Hot
Insertion
Bus Hold on Data Inputs Eliminates the
Need for External Pullup/Pulldown
Resistors
Support Mixed-Mode Signal Operation (5-V
Input and Output Voltages With 3.3-V VCC)
Support Unregulated Battery Operation
Down to 2.7 V
Typical VOLP (Output Ground Bounce)
< 0.8 V at VCC = 3.3 V, TA = 25°C
Latch-Up Performance Exceeds 500 mA Per
JESD 17
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
Package Options Include Plastic
Small-Outline (DW), Shrink Small-Outline
(DB), and Thin Shrink Small-Outline (PW)
Packages, Ceramic Chip Carriers (FK),
Ceramic Flat (W) Packages, and Ceramic
(J) DIPs
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
B1
B2
B3
B4
B5
A8
GND
B8
B7
B6
D
description
These octal bus transceivers are designed specifically for low-voltage (3.3-V) VCC operation, but with the
capability to provide a TTL interface to a 5-V system environment.
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.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
The B-port outputs, which are designed to source or sink up to 12 mA, include equivalent 22-Ω series resistors
to reduce overshoot and undershoot.
When VCC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down.
However, to ensure the high-impedance state above 1.5 V, OE should be tied to VCC through a pullup resistor;
the minimum value of the resistor is determined by the current-sinking capability of the driver.
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  1999, 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
1
SN54LVTH2245, SN74LVTH2245
3.3-V ABT OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS707C – SEPTEMBER 1997 – REVISED APRIL 1999
description (continued)
These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff 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.
The SN54LVTH2245 is characterized for operation over the full military temperature range of –55°C to 125°C.
The SN74LVTH2245 is characterized for operation from –40°C to 85°C.
FUNCTION TABLE
INPUTS
OPERATION
OE
DIR
L
L
B data to A bus
L
H
A data to B bus
H
X
Isolation
logic symbol†
19
OE
1
DIR
2
A1
G3
3EN1[BA]
3EN2[AB]
18
1
B1
2
A2
A3
A4
A5
A6
A7
A8
3
17
4
16
5
15
6
14
7
13
8
12
9
11
B2
B3
B4
B5
B6
B7
B8
† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
logic diagram (positive logic)
DIR
1
19
A1
2
18
To Seven Other Channels
2
OE
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
B1
SN54LVTH2245, SN74LVTH2245
3.3-V ABT OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS707C – SEPTEMBER 1997 – REVISED APRIL 1999
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4.6 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Voltage range applied to any output in the high-impedance
or power-off state, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V
Voltage range applied to any output in the high state, VO (see Note 1) . . . . . . . . . . . . . –0.5 V to VCC + 0.5 V
Current into any output in the low state, IO: SN54LVTH2245 (A port) . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 mA
SN74LVTH2245 (A port) . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
B port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Current into any output in the high state, IO (see Note 2): SN54LVTH2245 (A port) . . . . . . . . . . . . . . . 48 mA
SN74LVTH2245 (A port) . . . . . . . . . . . . . . . 64 mA
B port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 mA
Package thermal impedance, θJA (see Note 3): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115°C/W
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128°C/W
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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.
recommended operating conditions (see Note 4)
SN54LVTH2245
SN74LVTH2245
MIN
MAX
MIN
MAX
2.7
3.6
2.7
3.6
UNIT
VCC
VIH
Supply voltage
VIL
VI
Low-level input voltage
0.8
0.8
V
Input voltage
5.5
5.5
V
IOH
High level output current
High-level
A port
–24
–32
B port
–12
–12
IOL
Low level output current
Low-level
A port
48
64
B port
12
12
∆t/∆v
Input transition rise or fall rate
Outputs enabled
10
10
∆t/∆VCC
TA
Power-up ramp rate
200
Operating free-air temperature
–55
High-level input voltage
2
2
V
–40
mA
mA
ns/V
µs/V
200
125
V
85
°C
NOTE 4: 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.
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
SN54LVTH2245, SN74LVTH2245
3.3-V ABT OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS707C – SEPTEMBER 1997 – REVISED APRIL 1999
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
A port
VOH
II = –18 mA
IOH = –100 µA
VCC = 2.7 V,
IOH = –8 mA
IOH = –24 mA
VCC = 2.7 V to 3.6 V,
VCC = 3 V,
7V
VCC = 2
2.7
A port
VOL
VCC = 3 V
B port
VCC = 2.7 V to 3.6 V,
VCC = 3 V,
Control inputs
VCC = 3.6 V,
VCC = 0 or 3.6 V,
A or B ports‡
VCC = 3.6 V
II
Ioff
VCC = 0,
VCC = 3 V
II(hold)
MIN
VCC = 2.7 V,
VCC = 2.7 V to 3.6 V,
VCC = 3 V
B port
SN54LVTH2245
TYP†
MAX
TEST CONDITIONS
A or B ports
orts
VCC = 3.6 V§,
SN74LVTH2245
TYP† MAX
MIN
–1.2
VCC–0.2
2.4
–1.2
VCC–0.2
2.4
IOH = –12 mA
IOL = 100 µA
V
V
2
IOH = –32 mA
IOH = –100 µA
UNIT
2
VCC–0.2
2
VCC–0.2
2
V
0.2
0.2
IOL = 24 mA
IOL = 16 mA
0.5
0.5
0.4
0.4
IOL = 32 mA
IOL = 48 mA
0.5
0.5
0.55
IOL = 64 mA
IOL = 100 µA
0.2
0.2
IOL = 12 mA
VI = VCC or GND
0.8
0.8
±1
±1
VI = 5.5 V
VI = 5.5 V
10
10
20
20
VI = VCC
VI = 0
1
1
–5
–5
V
0.55
VI or VO = 0 to 4.5 V
VI = 0.8 V
VI = 2 V
±100
75
75
–75
–75
500
–750
VI = 0 to 3.6 V
V
µA
µA
µA
IOZPU
VCC = 0 to 1.5 V, VO = 0.5 V to 3 V,
OE = don’t care
±100*
±100
µA
IOZPD
VCC = 1.5 V to 0, VO = 0.5 V to 3 V,
OE = don’t care
±100*
±100
µA
ICC
VCC = 3.6 V,
IO = 0,
VI = VCC or GND
∆ICC¶
VCC = 3 V to 3.6 V, One input at VCC – 0.6 V,
Other inputs at VCC or GND
Ci
VI = 3 V or 0
VO = 3 V or 0
Cio
Outputs high
Outputs low
Outputs disabled
0.19
0.1
0.19
5
3
5
0.19
0.1
0.19
0.2
0.2
mA
mA
4
4
pF
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.
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
SN54LVTH2245, SN74LVTH2245
3.3-V ABT OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS707C – SEPTEMBER 1997 – REVISED APRIL 1999
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)
SN54LVTH2245
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
tPLH
tPHL
A
B
tPLH
tPHL
B
A
tPZH
tPZL
OE
A
tPHZ
tPLZ
OE
A
tPZH
tPZL
OE
B
tPHZ
tPLZ
OE
B
VCC = 3.3 V
± 0.3 V
SN74LVTH2245
VCC = 2.7 V
VCC = 3.3 V
± 0.3 V
VCC = 2.7 V
MAX
MIN
TYP†
MAX
4.6
5.3
1.1
2.9
4.4
5.1
1
4.6
5.3
1.1
2.6
4.4
5.1
1
3.7
4.2
1.1
2.2
3.5
4
1
3.7
4.2
1.1
2
3.5
4
1.2
5.7
7.4
1.3
3.1
5.5
7.1
1.6
5.7
6.8
1.7
3.2
5.5
6.5
2
6.2
6.8
2.2
3.6
5.9
6.5
2
5.3
5.5
2.2
3.4
5
5.1
1.2
6.4
7.6
1.3
3.5
6.2
7.3
1.6
6.4
7.5
1.7
3.7
6.2
7.3
2
6.1
6.8
2.2
3.9
5.9
6.5
2
5.7
5.9
2.2
3.7
5.4
5.7
MIN
MAX
1
MIN
MIN
UNIT
MAX
ns
ns
ns
ns
ns
ns
† All typical values are at VCC = 3.3 V, TA = 25°C.
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
SN54LVTH2245, SN74LVTH2245
3.3-V ABT OCTAL BUS TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCBS707C – SEPTEMBER 1997 – REVISED APRIL 1999
PARAMETER MEASUREMENT INFORMATION
6V
500 Ω
From Output
Under Test
S1
Open
GND
CL = 50 pF
(see Note A)
500 Ω
TEST
S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
6V
GND
2.7 V
LOAD CIRCUIT
Timing Input
1.5 V
0V
tw
tsu
2.7 V
1.5 V
Input
1.5 V
th
2.7 V
Data Input
1.5 V
1.5 V
0V
0V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
2.7 V
1.5 V
Input
1.5 V
0V
tPLH
VOH
1.5 V
VOL
tPHL
VOH
Output
tPLZ
3V
1.5 V
tPZH
1.5 V
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
1.5 V
0V
Output
Waveform 1
S1 at 6 V
(see Note B)
tPLH
1.5 V
1.5 V
tPZL
tPHL
1.5 V
Output
2.7 V
Output
Control
Output
Waveform 2
S1 at GND
(see Note B)
VOL + 0.3 V
VOL
tPHZ
1.5 V
VOH – 0.3 V
VOH
≈0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
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.
Figure 1. Load Circuit and Voltage Waveforms
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas 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.
CERTAIN 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 APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD 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