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74LCXH2245MTC

P1-P3P4-P6P7-P9P10-P11
© 2005 Fairchild Semiconductor Corporation DS500409 www.fairchildsemi.com
October 2000
Revised March 2005
74LCXH2245 Low Voltage Bidirectional Transceiver with Bushold and 26: Series Resistors in B Outputs
74LCXH2245
Low Voltage Bidirectional Transceiver with Bushold
and 26: Series Resistors in B Outputs
General Description
The LCXH2245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The device is designed for low voltage
(2.5V and 3.3V) V
CC
applications. The T/R input deter-
mines the direction of data flow through the device. The OE
input disables both the A and B ports by placing them in a
high impedance state. The 26
series resistor in the B Port
output helps reduce output overshoot and undershoot.
The LCXH2245 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing CMOS low power dissipation.
The LCXH2245 data inputs include active bushold circuitry,
eliminating the need for external pull-up resistors to hold
unused or floating data inputs at a valid logic level.
Features
■ 5V tolerant control inputs
■ 2.3V–3.6V V
CC
specifications provided
■ Bushold on inputs eliminates the need for external
pull-up/pull-down resistors
■ 7.0 ns t
PD
max (V
CC
3.3V), 10 A I
CC
max
■ Power down high impedance outputs
■ 12 mA output drive B Port (V
CC
3.0V)
■ Implements patented noise/EMI reduction circuitry
■ Latch-up performance exceeds 500 mA
■ Equivalent 26 series resistor on B Port outputs
■ ESD performance:
Human body model
2000V
Machine model
200V
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Logic Symbol
Pin Descriptions
Connection Diagram
GTO is a trademark of Fairchild Semiconductor Corporation.
Order Number Package Number Package Description
74LCXH2245WM M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LCXH2245SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCXH2245MSA MSA20 20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
74LCXH2245MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names Description
OE
Output Enable Input
T/R
Transmit/Receive Input
A
0
–A
7
Side A Inputs or 3-STATE Outputs (Bushold)
B
0
–B
7
Side B Inputs or 3-STATE Outputs (Bushold)
www.fairchildsemi.com 2
74LCXH2245
Truth Table
H HIGH Voltage Level
L
LOW Voltage Level
X
Immaterial
Z
High Impedance
Logic Diagram
Inputs
Outputs
OE
T/R
L L Bus B
0
– B
7
Data to Bus A
0
– A
7
L H Bus A
0
– A
7
Data to Bus B
0
– B
7
H X HIGH Z State on A
0
– A
7
, B
0
– B
7
3 www.fairchildsemi.com
74LCXH2245
Absolute Maximum Ratings(Note 1)
Recommended Operating Conditions (Note 3)
Note 1: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated
at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The “Recom-
mended Operating Conditions” table will define the conditions for actual device operation.
Note 2: I
O
Absolute Maximum Rating must be observed.
Note 3: Floating or unused control inputs must be HIGH or LOW.
DC Electrical Characteristics
Symbol Parameter Value Conditions Units
V
CC
Supply Voltage 0.5 to 7.0 V
V
I
T/R, OE, 0.5 to 7.0
V
I/O Ports
0.5 to V
CC
0.5
V
O
DC Output Voltage 0.5 to V
CC
0.5 Output in HIGH or LOW State (Note 2) V
I
IK
DC Input Diode Current 50 V
I
GND mA
I
OK
DC Output Diode Current 50 V
O
GND
mA
50 V
O
V
CC
I
O
DC Output Source/Sink Current 50 mA
I
CC
DC Supply Current per Supply Pin 100 mA
I
GND
DC Ground Current per Ground Pin 100 mA
T
STG
Storage Temperature 65 to 150 C
Symbol Parameter Min Max Units
V
CC
Supply Voltage Operating 2.0 3.6
V
Data Retention 1.5 3.6
V
I
Input Voltage 0V
CC
V
V
O
Output Voltage HIGH or LOW State 0 V
CC
V
3-STATE 0 5.5
I
OH
/I
OL
Output Current in I
OH
/I
OL
- A Outputs V
CC
3.0V 3.6V 24
mAV
CC
2.7V - 3.0V 12
V
CC
2.3V - 2.7V 8
Output Current in I
OH
/I
OL
- B Outputs V
CC
3.0V 3.6V 12
mAV
CC
2.7V - 3.0V 8
V
CC
2.3V - 2.7V 4
T
A
Free-Air Operating Temperature 40 85 C
t/ V Input Edge Rate, V
IN
0.8V 2.0V, V
CC
3.0V 0 10 ns/V
Symbol Parameter Conditions
V
CC
T
A
40 C to 85 C
Units
(V) Min Max
V
IH
HIGH Level Input Voltage 2.3 2.7 1.7
V
2.7 3.6 2.0
V
IL
LOW Level Input Voltage 2.3 2.7 0.7
V
2.7 - 3.6 0.8
V
OH
HIGH Level Output Voltage I
OH
100 A 2.3 - 3.6 V
CC
0.2
V
A Outputs I
OH
8 mA 2.3 1.8
I
OH
12 mA 2.7 2.2
I
OH
16 mA 3.0 2.4
I
OH
24 mA 3.0 2.2
V
OH
HIGH Level Output Voltage I
OH
100 A 2.3 - 3.6 V
CC
0.2
V
B Outputs I
OH
4 mA 2.3 1.8
I
OH
4 mA 2.7 2.2
I
OH
6 mA 3.0 2.4
I
OH
8 mA 2.7 2.0
I
OH
12 mA 3.0 2.0
P1-P3P4-P6P7-P9P10-P11

74LCXH2245MTC

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Buy 74LCXH2245MTC
Manufacturer:
ON Semiconductor / Fairchild
Description:
Bus Transceivers Transceiver Bidirectional
Lifecycle:
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