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부품번호 | 74VCXH2245 기능 |
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기능 | Low Voltage Bidirectional Transceiver with Bushold and 26 Series Resistors in B Outputs | ||
제조업체 | Fairchild Semiconductor | ||
로고 | |||
전체 8 페이지수
www.DataSheet4U.com
June 1999
Revised July 1999
74VCXH2245
Low Voltage Bidirectional Transceiver with Bushold
and 26Ω Series Resistors in B Outputs
General Description
The VCXH2245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The T/R input determines the direction
of data flow. The OE input disables both the A and B Ports
by placing them in a high impedance state. The VCXH2245
data inputs include active bushold circuitry, eliminating the
need for external pull-up resistors to hold unused or float-
ing data inputs at a valid logic level.
The 74VCXH2245 is designed for low voltage (1.65V to
3.6V) VCC applications. The VCXH2245 is also designed
with 26Ω series resistance in the B Port outputs. This
design reduces line noise in applications such as memory
address drivers, clock drivers, and bus transceivers trans-
mitters
The 74VCXH2245 is fabricated with an advanced CMOS
technology to achieve high-speed operation while main-
taining low CMOS power dissipation.
Features
s 1.65V-3.6V VCC supply operation
s 3.6V tolerant control inputs
s Bushold on data inputs eliminates the need for external
pull-up/pull-down resistors
s 26Ω series resistors in B Port outputs
s tPD (A to B)
4.4 ns max for 3.0V to 3.6V VCC
5.6 ns max for 2.3V to 2.7V VCC
9.8 ns max for 1.65V to 1.95V VCC
s Static Drive (IOH/IOL B outputs):
±12 mA @ 3.0V VCC
±8 mA @ 2.3V VCC
±3 mA @ 1.65V VCC
s Uses patented Quiet Series™ noise/EMI reduction
circuitry
s Latchup performance exceeds 300 mA
s ESD performance:
Human body model > 2000V
Machine model > 200V
Ordering Code:
Order Number Package Number
Package Description
74VCXH2245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
74VCXH2245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
Quiet Series™ is a trademark of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation ds500199
www.fairchildsemi.com
DC Electrical Characteristics (2.3V ≤ VCC ≤ 2.7V)
Symbol
Parameter
Conditions
VCC
(V)
VIH HIGH Level Input Voltage
VIL LOW Level Input Voltage
VOH HIGH Level Output Voltage
A Outputs
HIGH Level Output Voltage
B Outputs
VOL
II
II(HOLD)
II(OD)
LOW Level Output Voltage
A Outputs
LOW Level Output Voltage
B Outputs
Input Leakage Current
Bushold Input Minimum
Drive Hold Current
Bushold Input Over−Drive
Current to Change State
IOH = −100 µA
IOH = −6 mA
IOH = −12 mA
IOH = −18 mA
IOH = −100 µA
IOH = −4 mA
IOH = −6 mA
IOH = −8mA
IOL = 100 µA
IOL = 12 mA
IOL = 18 mA
IOL = 100 µA
IOL = 6 mA
IOL = 8 mA
VIN = VCC or GND
VIN = 0.7V
VIN = 1.6V
(Note 6)
(Note 7)
2.3–2.7
2.3–2.7
2.3–2.7
2.3
2.3
2.3
2.3–2.7
2.3
2.3
2.3
2.3–2.7
2.3
2.3
2.3–2.7
2.3
2.3
2.3–2.7
2.3
2.3
2.7
2.7
IOZ 3-STATE Output Leakage
VO = VCC or GND
2.3–2.7
VI = VIH or VIL
ICC Quiescent Supply Current
VI = VCC or GND
2.3–2.7
Note 6: An external driver must source at least the specified current to switch from LOW-to-HIGH.
Note 7: An external driver must sink at least the specified current to switch from HIGH-to-LOW.
Min
1.6
VCC − 0.2
2.0
1.8
1.7
VCC–2
2.0
1.8
1.7
45
−45
300
−300
DC Electrical Characteristics (1.65V ≤ VCC < 2.3V)
Symbol
Parameter
Conditions
VCC
(V)
VIH
VIL
VOH
VOL
II
II(HOLD)
II(OD)
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Voltage
A Outputs
HIGH Level Output Voltage
B Outputs
LOW Level Output Voltage
A Outputs
LOW Level Output Voltage
B Outputs
Input Leakage Current
Bushold Input Minimum
Drive Hold Current
Bushold Input Over-Drive
Current to Change State
IOH = −100 µA
IOH = −6 mA
IOH = −100 µA
IOH = −3 mA
IOL = 100 µA
IOL = 6 mA
IOL = 100µA
IOL = 3 mA
0 ≤ VI ≤ 3.6V
VIN = 0.57V
VIN = 1.07V
(Note 8)
(Note 9)
1.65–2.3
1.65–2.3
1.65–1.95
1.65
1.65–2.3
1.65
1.65–2.3
1.65
1.65–2.3
1.65
1.65–2.3
1.65
1.65
1.95
1.95
IOZ 3-STATE Output Leakage
VO = VCC or GND
1.65–2.3
ICC Quiescent Supply Current
VI = VCC or GND
1.65–2.3
Note 8: An external driver must source at least the specified current to switch from LOW-to-HIGH.
Note 9: An external driver must sink at least the specified current to switch from HIGH-to-LOW.
Min
0.65 x VCC
VCC − 0.2
1.25
VCC–0.2
1.25
25
−25
200
−200
Max
0.7
Units
V
V
V
0.2
0.4
0.6
0.2
0.4
0.6
±5.0
±10
20
V
V
V
µA
µA
µA
µA
µA
Max
0.35 x VCC
0.2
0.3
0.2
0.3
±5.0
±10
20
Units
V
V
V
V
V
V
µA
µA
µA
µA
µA
www.fairchildsemi.com
4
4페이지 Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300” Wide
Package Number M20B
7 www.fairchildsemi.com
7페이지 | |||
구 성 | 총 8 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
74VCXH2245 | Low Voltage Bidirectional Transceiver with Bushold and 26 Series Resistors in B Outputs | Fairchild Semiconductor |
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