74LVTH2245MTCX [ONSEMI]
带 3 态输入/输出和 B 端口输出具有 25 Ω 串联电阻的低压八路双向收发器。;型号: | 74LVTH2245MTCX |
厂家: | ONSEMI |
描述: | 带 3 态输入/输出和 B 端口输出具有 25 Ω 串联电阻的低压八路双向收发器。 信息通信管理 光电二极管 逻辑集成电路 |
文件: | 总11页 (文件大小:413K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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January 2008
74LVT2245, 74LVTH2245
Low Voltage Octal Bidirectional Transceiver with
3-STATE Inputs/Outputs and 25Ω Series Resistors in the
B Port Outputs
Features
General Description
■ Input and output interface capability to systems at
The LVT2245 and LVTH2245 contain eight non-inverting
bidirectional buffers with 3-STATE outputs and are
intended for bus-oriented applications. The Transmit/
Receive (T/R) input determines the direction of data flow
through the bidirectional transceiver. Transmit (active-
HIGH) enables data from A Ports to B Ports; Receive
(active-LOW) enables data from B Ports to A Ports. The
Output Enable input, when HIGH, disables both A and B
Ports by placing them in a high impedance state. The
equivalent 25Ω-series resistor in the B Port helps reduce
output overshoot and undershoot.
5V V
CC
■ Equivalent 25Ω series resistor on B Port outputs
■ Bushold data inputs eliminate the need for external
pull-up resistors to hold unused inputs (74LVTH2245),
also available without bushold feature (74LVT2245)
■ Live insertion/extraction permitted
■ Power Up/Down high impedance provides glitch-free
bus loading
■ Outputs source/sink –12mA/+12mA on B Port,
–32mA/+64mA on A Port
The LVTH2245 data inputs include bushold, eliminating
the need for external pull-up resistors to hold unused
inputs.
■ Latch-up performance exceeds 500mA
■ ESD performance:
– Human-body model > 2000V
– Machine model > 200V
These transceivers are designed for low voltage (3.3V)
V
applications, but with the capability to provide a TTL
CC
– Charged-device model > 1000V
interface to a 5V environment. The LVT2245 and
LVTH2245 are fabricated with an advanced BiCMOS
technology to achieve high speed operation similar to 5V
ABT while maintaining low power dissipation.
Ordering Information
Package
Order Number Number
Package Description
74LVT2245WM
74LVT2245SJ
74LVT2245MTC
M20B
M20D
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
74LVTH2245WM
74LVTH2245SJ
74LVTH2245MTC
M20B
M20D
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
All packages are lead free per JEDEC: J-STD-020B standard.
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com
Connection Diagram
Logic Symbols
IEEE/IEC
Pin Description
Pin
Description
Names
OE
T/R
A –A
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
0
7
7
B –B
0
Truth Table
Inputs
OE
L
T/R
Outputs
L
H
X
Bus B Data to Bus A
Bus A Data to Bus B
HIGH-Z State
L
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com
2
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Rating
V
Supply Voltage
–0.5V to +4.6V
CC
V
DC Input Voltage
DC Output Voltage
Output in 3-STATE
–0.5V to +7.0V
I
V
O
–0.5V to +7.0V
–0.5V to +7.0V
–50mA
(1)
Output in HIGH or LOW State
I
DC Input Diode Current, V < GND
I
IK
I
DC Output Diode Current, V < GND
–50mA
OK
O
I
DC Output Current, V > V
O
O
CC
Output at HIGH State
Output at LOW State
64mA
128mA
I
DC Supply Current per Supply Pin
DC Ground Current per Ground Pin
Storage Temperature
64mA
CC
I
128mA
GND
T
–65°C to +150°C
STG
Note:
1. I Absolute Maximum Rating must be observed.
O
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol
Parameter
Min
2.7
0
Max
3.6
5.5
–32
–12
64
Units
V
V
Supply Voltage
Input Voltage
CC
V
V
I
I
HIGH-Level Output Current
LOW-Level Output Current
Free Air Operating Temperature
A Port
B Port
A Port
B Port
mA
OH
I
mA
OL
12
T
–40
0
+85
10
°C
A
∆t/∆V
Input Edge Rate, V = 0.8V–2.0V, V = 3.0V
ns/V
IN
CC
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com
3
DC Electrical Characteristics
TA = –40°C to +85°C
Symbol
Parameter
Input Clamp Diode Voltage
Input HIGH Voltage
VCC (V)
2.7
Conditions
Min.
Max.
Units
V
V
I = –18mA
–1.2
V
V
V
V
IK
IH
I
2.7–3.6
2.7–3.6
2.7
V
V
≤ 0.1V or
2.0
O
O
≥ V – 0.1V
CC
V
Input LOW Voltage
0.8
IL
V
Output HIGH Voltage A Port
I
I
I
I
I
I
I
I
I
I
= –8mA
= –32mA
= –12mA
= –100µA
= 24mA
= 16mA
= 32mA
= 64mA
= 12mA
= 100µA
2.4
2.0
2.0
OH
OH
OH
OH
OH
OL
OL
OL
OL
OL
OL
3.0
B Port
3.0
2.7–3.6
2.7
V
–0.2
CC
V
Output LOW Voltage A Port
0.5
0.4
V
OL
3.0
3.0
0.5
3.0
0.55
0.8
B Port
3.0
2.7
0.2
(2)
I
Bushold Input Minimum Drive
3.0
V = 0.8V
75
µA
µA
µA
I(HOLD)
I
V = 2.0V
–75
500
I
(2)
(3)
I
Bushold Input Over-Drive Current to
Change State
3.0
I(OD)
(4)
–500
I
Input Current
Control Pins
Data Pins
3.6
3.6
3.6
V = 5.5V
10
1
I
I
V = 0V or V
I
CC
V = 0V
–5
1
I
V = V
I
CC
I
Power Off Leakage Current
0
0V ≤ V or V ≤ 5.5V
100
100
µA
µA
OFF
I
O
I
Power Up/Down, 3-STATE Current
0–1.5
V = 0.5V to 3.0V,
O
PU/PD
V = GND or V
I
CC
I
3-STATE Output Leakage Current
3-STATE Output Leakage Current
3-STATE Output Leakage Current
3-STATE Output Leakage Current
3-STATE Output Leakage Current
Power Supply Current
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6
V
V
V
V
V
= 0.5V
= 0.0V
= 3.0V
= 3.6V
–5
–5
µA
µA
OZL
(2)
O
I
OZL
O
I
5
µA
OZH
O
(2)
I
5
µA
OZH
O
I
+
< V ≤ 5.5V
10
µA
OZH
CC
O
I
Outputs High
Outputs Low
0.19
5
mA
mA
mA
mA
CCH
I
Power Supply Current
CCL
I
Power Supply Current
Outputs Disabled
0.19
0.19
CCZ
I
+
Power Supply Current
V
≤ V ≤ 5.5V, Outputs
CC O
CCZ
Disabled
(5)
∆I
Increase in Power Supply Current
3.6
One Input at V – 0.6V,
0.2
mA
CC
CC
Other Inputs at V or GND
CC
Notes:
2. Applies to Bushold versions only (74LVTH2245).
3. An external driver must source at least the specified current to switch from LOW-to-HIGH.
4. An external driver must sink at least the specified current to switch from HIGH-to-LOW.
5. This is the increase in supply current for each input that is at the specified voltage level rather than V or GND.
CC
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com
4
(6)
Dynamic Switching Characteristics
Conditions
T = 25°C
A
Symbol
Parameter
V
CC
(V) C = 50pF, R = 500Ω Min. Typ. Max. Units
L
L
(7)
(7)
V
Quiet Output Maximum
3.3
0.8
V
V
OLP
Dynamic V
OL
V
Quiet Output Minimum
Dynamic V
3.3
–0.8
OLV
OL
Notes:
6. Characterized in SOIC package. Guaranteed parameter, but not tested.
7. Max number of outputs defined as (n). n–1 data inputs are driven 0V to 3V. Output under test held LOW.
AC Electrical Characteristics
T = –40°C to +85°C,
A
C = 50pF, R = 500Ω
L
L
V
= 3.3V 0.3V
V
= 2.7V
CC
CC
Symbol
Parameter
Min.
1.2
1.2
1.2
1.2
1.3
1.7
1.3
1.7
2.0
2.0
2.0
2.0
Max.
4.4
4.4
3.6
3.5
6.2
6.2
5.5
5.7
5.9
5.4
5.9
5.0
1.0
1.0
Min.
1.2
1.2
1.2
1.2
1.3
1.7
1.3
1.7
2.0
2.0
2.0
2.0
Max.
Units
t
t
t
t
Propagation Delay Data to B Port Output
5.1
5.1
4.0
4.0
7.3
7.3
7.1
6.7
6.5
5.7
6.5
5.1
1.0
1.0
ns
PLH
PHL
PLH
PHL
PZH
Propagation Delay Data to A Port Output
Output Enable Time for B Port Output
Output Enable Time for A Port Output
Output Disable Time for B Port Output
Output Disable Time for A Port Output
ns
ns
ns
ns
ns
t
t
PZL
PZH
t
t
PZL
PHZ
t
t
PLZ
PHZ
t
t
PLZ
(8)
t
t
, t
A Port Output to Output Skew
ns
ns
OSHL OSLH
(8)
, t
B Port Output to Output Skew
OSHL OSLH
Note:
8. Skew is defined as the absolute value of the difference between the actual propagation delay for any two
separate outputs of the same device. The specification applies to any outputs switching in the same direction,
either HIGH-to-LOW (t
) or LOW-to-HIGH (t
).
OSHL
OSLH
(9)
Capacitance
Symbol
Parameter
Conditions
Typical
Units
pF
C
Input Capacitance
Input/Output Capacitance
V
V
= 0V, V = 0V or V
CC
4
8
IN
CC
I
C
= 3.0V, V = 0V or V
CC
pF
I/O
CC
O
Note:
9. Capacitance is measured at frequency f = 1MHz, per MIL-STD-883, Method 3012.
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com
5
Physical Dimensions
13.00
12.60
A
11.43
20
11
B
9.50
10.65 7.60
10.00 7.40
2.25
1
PIN ONE
INDICATOR
10
0.65
0.51
0.35
1.27
1.27
M
0.25
C B A
LAND PATTERN RECOMMENDATION
SEE DETAIL A
2.65 MAX
0.33
0.20
C
0.10
C
0.30
0.10
SEATING PLANE
0.75
0.25
X 45°
NOTES: UNLESS OTHERWISE SPECIFIED
(R0.10)
(R0.10)
A) THIS PACKAGE CONFORMS TO JEDEC
MS-013, VARIATION AC, ISSUE E
GAGE PLANE
B) ALL DIMENSIONS ARE IN MILLIMETERS.
C) DIMENSIONS DO NOT INCLUDE MOLD
FLASH OR BURRS.
0.25
8°
0°
D) CONFORMS TO ASME Y14.5M-1994
1.27
0.40
SEATING PLANE
E) LANDPATTERN STANDARD: SOIC127P1030X265-20L
F) DRAWING FILENAME: MKT-M20BREV3
(1.40)
DETAIL A
SCALE: 2:1
Figure 1. 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com
6
Physical Dimensions (Continued)
Figure 2. 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com
7
Physical Dimensions (Continued)
Figure 3. 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com
8
TRADEMARKS
The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global
subsidiaries, and is not intended to be an exhaustive list of all such trademarks.
ACEx®
PDP-SPM™
SupreMOS™
FPS™
Power220®
SyncFET™
Build it Now™
CorePLUS™
CROSSVOLT™
CTL™
Current Transfer Logic™
EcoSPARK®
EZSWITCH™ *
™
FRFET®
POWEREDGE®
Power-SPM™
PowerTrench®
Programmable Active Droop™
QFET®
®
Global Power ResourceSM
Green FPS™
Green FPS™e-Series™
GTO™
i-Lo™
IntelliMAX™
ISOPLANAR™
MegaBuck™
MICROCOUPLER™
MicroFET™
The Power Franchise®
TinyBoost™
TinyBuck™
TinyLogic®
TINYOPTO™
TinyPower™
TinyPWM™
TinyWire™
µSerDes™
UHC®
QS™
QT Optoelectronics™
Quiet Series™
RapidConfigure™
SMART START™
SPM®
STEALTH™
SuperFET™
SuperSOT™-3
SuperSOT™-6
SuperSOT™-8
®
Fairchild®
Fairchild Semiconductor®
FACT Quiet Series™
FACT®
MicroPak™
MillerDrive™
Motion-SPM™
OPTOLOGIC®
FAST®
Ultra FRFET™
UniFET™
VCX™
OPTOPLANAR®
FastvCore™
®
FlashWriter® *
* EZSWITCH™ and FlashWriter® are trademarks of System General Corporation, used under license by Fairchild Semiconductor.
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS
HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE
APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS
PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S
WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN, WHICH COVERS THESE PRODUCTS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR
SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems 2. A critical component in any component of a life support,
which, (a) are intended for surgical implant into the body or
(b) support or sustain life, and (c) whose failure to perform
when properly used in accordance with instructions for use
provided in the labeling, can be reasonably expected to
result in a significant injury of the user.
device, or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification
Product Status
Definition
This datasheet contains the design specifications for product
development. Specifications may change in any manner without notice.
Advance Information
Formative or In Design
This datasheet contains preliminary data; supplementary data will be
published at a later date. Fairchild Semiconductor reserves the right to
make changes at any time without notice to improve design.
Preliminary
First Production
Full Production
Not In Production
This datasheet contains final specifications. Fairchild Semiconductor
reserves the right to make changes at any time without notice to improve
the design.
No Identification Needed
Obsolete
This datasheet contains specifications on a product that has been
discontinued by Fairchild Semiconductor. The datasheet is printed for
reference information only.
Rev. I33
©1999 Fairchild Semiconductor Corporation
74LVT2245, 74LVTH2245 Rev. 1.5.0
www.fairchildsemi.com
9
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regardless of any support or applications information provided by ON Semiconductor. “Typical” parameters which may be provided in ON Semiconductor data sheets and/or
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application by customer’s technical experts. ON Semiconductor does not convey any license under its patent rights nor the rights of others. ON Semiconductor products are not
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相关型号:
74LVTH2245MTCX_NL
Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25ヘ Series Resistors in the B Port Outputs
FAIRCHILD
74LVTH2245MTC_08
Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25 B Port Outputs
FAIRCHILD
74LVTH2245PW,112
74LVT(H)2245 - 3.3 V octal transceiver with 30 Ohm termination resistors; 3-state TSSOP2 20-Pin
NXP
74LVTH2245SJ
Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25ヘ Series Resistors in the B Port Outputs
FAIRCHILD
74LVTH2245SJ
Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25 Ohm Series Resistors in the B Port Outputs, SOP 20L, 3800-RAIL
ONSEMI
74LVTH2245SJX
Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25ヘ Series Resistors in the B Port Outputs
FAIRCHILD
74LVTH2245SJX
Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25 Ohm Series Resistors in the B Port Outputs, SOP 20L, 2000-TAPE REEL
ONSEMI
74LVTH2245SJ_08
Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25 B Port Outputs
FAIRCHILD
74LVTH2245WM
Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25ヘ Series Resistors in the B Port Outputs
FAIRCHILD
74LVTH2245WMX
Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25ヘ Series Resistors in the B Port Outputs
FAIRCHILD
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