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74VCXH16245 반도체 회로 부품 판매점

Low-Voltage 1.8/2.5/3.3V 16-Bit Transceiver



ON Semiconductor 로고
ON Semiconductor
74VCXH16245 데이터시트, 핀배열, 회로
November 1999
Revised March 2000
74VCXH16244
Low Voltage 16-Bit Buffer/Line Driver with Bushold
General Description
The VCXH16244 contains sixteen non-inverting buffers
with 3-STATE outputs to be employed as a memory and
address driver, clock driver, or bus oriented transmitter/
receiver. The device is nibble (4-bit) controlled. Each nibble
has separate 3-STATE control inputs which can be shorted
together for full 16-bit operation.
The VCXH16244 data inputs include active bushold cir-
cuitry, eliminating the need for external pull-up resistors to
hold unused or floating data inputs at a valid logic level.
The 74VCXH16244 is designed for low voltage (1.65V to
3.6V) VCC applications with output capability up to 3.6V.
The 74VCXH16244 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing low CMOS power dissipation.
Features
s 1.65V–3.6V VCC supply operation
s 3.6V tolerant control inputs and outputs
s Bushold on data inputs eliminating the need for external
pull-up/pull-down resistors
s tPD
2.5 ns max for 3.0V to 3.6V VCC
3.0 ns max for 2.3V to 2.7V VCC
6.0 ns max for 1.65V to 1.95V VCC
s Static Drive (IOH/IOL)
±24 mA @ 3.0V VCC
±18 mA @ 2.3V VCC
±6 mA @ 1.65V VCC
s Uses patented noise/EMI reduction circuitry
s Latch-up performance exceeds 300 mA
s ESD performance:
Human body model > 2000V
Machine model > 200V
Ordering Code:
Order Number
Package
Number
Package Description
74VCXH16244MTD
MTD48
48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Pin Names
OEn
I0–I15
O0–O15
Description
Output Enable Input (Active LOW)
Bushold Inputs
Outputs
© 2000 Fairchild Semiconductor Corporation DS500230
www.fairchildsemi.com


74VCXH16245 데이터시트, 핀배열, 회로
Connection Diagram
Truth Tables
Functional Description
The 74VCXH16244 contains sixteen non-inverting buffers
with 3-STATE outputs. The device is nibble (4 bits) con-
trolled with each nibble functioning identically, but indepen-
dent of each other. The control pins may be shorted
together to obtain full 16-bit operation.The 3-STATE out-
Logic Diagram
Inputs
OE1
L
I0–I3
L
LH
HX
Outputs
O0–O3
L
H
Z
Inputs
OE3
L
I8-I11
L
LH
HX
Outputs
O8–O11
L
H
Z
Inputs
OE2
L
I4-I7
L
LH
HX
Outputs
O4-O7
L
H
Z
Inputs
Outputs
OE4
L
I12-I15
L
O12-O15
L
LH
H
HX
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial (HIGH or LOW, inputs may not float)
Z = High Impedance
Z
puts are controlled by an Output Enable (OEn) input. When
OEn is LOW, the outputs are in the 2-state mode. When
OEn is HIGH, the standard outputs are in the high imped-
ance mode but this does not interfere with entering new
data into the inputs.
www.fairchildsemi.com
2




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74VCXH16245 transceiver

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