Fairchild 74VCX162244 service manual
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74VCX162244
Low Voltage 16-Bit Buffer/Line Driver
with 3.6V Tolerant Inputs and Outputs
and 26: Series Resistor in Outputs
General Description
The VCX162244 contains sixteen non-inverting buffers
with 3-STATE outputs to be employe d 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 74VCX162244 is designed for low voltage (1.2V to
3.6V) V
74VCX162244 is also designed with 26
the outputs. This design reduce s line noise in appl ications
such as memory address driver s, clock drivers, and bus
transceivers/transmitters.
The 74VCX162244 is fab ricated with an advance d CMOS
technology to achieve high speed operation while maintaining low CMOS power dissipation.
applications with I/O capabi lity up to 3.6V. The
CC
:
series resistors in
August 1997
Revised June 2005
Features
■ 1.2V to 3.6V V
■ 3.6V tolerant inputs and outputs
■ 26
:
series resistors in outputs
■ t
PD
3.3 ns max for 3.0V to 3.6V V
■ Power-off high impedance inputs and outputs
■ Supports live insertion and withdrawal
■ Static Drive (I
r
12 mA @ 3.0V V
■ Uses patented noise/EMI reductio n circui tr y
■ Latch-up performance exce eds 300 mA
■ ESD performance:
Human body model ! 2000V
Machine model
■ Also packaged in plastic Fine-Pitch Ball Grid Array
(FBGA)
Note 1: To ensure the high-impedance state during power up or power
should be tied to VCC through a pull-up r esistor; the min imum
down, OE
value of the resistor is dete rmined by the current -sourci ng capabilit y of the
driver.
supply operation
CC
)
OH/IOL
CC
!
200V
CC
74VCX162244 Low Voltage 16-Bit Buffer/Line Driver with 3.6V Tolerant Inputs and Outputs and 26: Series
Resistor in Outputs
Ordering Code:
Order Number Package Number Package Description
74VCX162244G
(Note 2)(Note 3)
74VCX162244MTD
(Note 3)
Note 2: Ordering Code “G” indicates Trays.
Note 3: Devices also available in Tape and Reel. Specify by appending suffix letter “X” t o t he ordering code.
BGA54A 54-Ball Fine-Pitch Ball Grid Array (FBGA), JEDEC MO-205, 5.5mm Wide
MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
Logic Symbol
© 2005 Fairchild Semiconductor Corporation DS500040 www.fairchildsemi.com
Connection Diagrams
Pin Descriptions
Pin Assignment for TSSOP
74VCX162244
Pin Assignment for FBGA
(Top Thru View)
Pin Names Description
Output Enable Input (Active LOW)
Inputs
Outputs
I
O
OE
n
0–I15
0–O15
NC No Connect
FBGA Pin Assignments
123456
A O
B O
C O
D O
E O
F O
G O
H O
J O
NC OE1OE2NC I
0
O1NC NC I
2
O3V
4
6
8
10
12O11VCCVCCI11
14O13
15
CCVCCI3
O5GND GND I
O7GND GND I
O9GND GND I
NC NC I
NC OE4OE3NC I
Truth Tables
Inputs Outputs
OE
1
LL L
LH H
HX Z
OE
2
LL L
LH H
HX Z
OE
3
LL L
LH H
HX Z
I0–I
3
Inputs Outputs
I4–I
7
Inputs Outputs
I8–I
11
13I14
O0–O
O4–O
O8–O
0
I
1
2
I
4
I
5
6
I
7
8
I
9
10
I
12
15
3
7
11
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Inputs Outputs
OE
4
I12–I
15
O12–O
LL L
LH H
HX Z
H HIGH Voltage Level
L
LOW Voltage Level
Immaterial (HIGH or LOW, inputs may not float)
X
High Impedance
Z
15
Functional Description
The 74VCX162244 contains si xteen non-inverting buffers
with 3-STATE outputs. The device is nibble (4 bits) controlled with each nibble fun ction i ng ide nti ca lly, but independent of each other. The control pins may be shorted
together to obtain full 16-bit operation.The 3-STATE out-
Logic Diagram
puts are controlled by an Output Enable (OE
is LOW, the outputs are in the 2-state mode. When
OE
n
is HIGH, the standard outputs are in th e high imped-
OE
n
ance mode but this does not interfere with entering new
data into the inputs.
) input. When
n
74VCX162244
3 www.fairchildsemi.com
Absolute Maximum Ratings(Note 4) Recommended Operating
Supply Voltage (VCC)
DC Input Voltage (V
Output Voltage (V
Outputs 3-STATE
74VCX162244
Outputs Active (Note 5)
O
DC Input Diode Current (I
DC Output Diode Current (I
0V
V
O
V
! V
O
CC
DC Output Source/Sink Current
)
(I
OH/IOL
DC V
or GND Current per
CC
Supply Pin (I
or GND)
CC
Storage Temperature Range (T
0.5V to 4.6V
)
I
0.5V to 4.6V
)
0.5V to 4.6V
0.5V to VCC 0.5V
) VI 0V
IK
OK
)
50 mA
50 mA
50 mA
Conditions
Power Supply
Operating 1.2V to 3.6V
Data Retention Only 1.2V to 3.6V
Input Voltage
Output Voltage (V
Output in Active States 0V to V
Output in 3-State 0.0V to 3.6V
Output Current in I
VCC 3.0V to 3.6V
r
STG
50 mA
r
100 mA
)
65q
C to 150qC
2.3V to 2.7V
V
CC
V
1.65V to 2.3V
CC
V
1.4V to 1.6V
CC
1.2V
V
CC
Free Air Operating Temperature (T
Minimum Input Edge Rate (
0.8V to 2.0V, VCC 3.0V 10 ns/V
V
IN
Note 4: The Absolute Maximum Ratings are those values beyond which
the safety of the d evice cannot be guaranteed. The device sh ould not be
operated at these limi ts. The parametric values define d in the Electrical
Characteristics table s are not guaranteed at the Ab solute Maximum Ratings. The “Recommended Operating Conditions” table will define t he conditions for actual device oper ation.
Absolute Maximum Rating must be observed.
Note 5: I
O
Note 6: Floating or unused inputs must be held H IG H or LOW.
(Note 6)
)
O
OH/IOL
't/'
DC Electrical Characteristics (2.7V VCC d 3.6V)
0.3V to 3.6V
CC
r
12 mA
r
8 mA
r
3 mA
r
2 mA
r
100 PA
)
40q
A
C to 85qC
V)
Symbol Parameter Conditions
V
V
V
HIGH Level Input Voltage 2.7 - 3.6 2.0
IH
LOW Level Input Voltage 2.7 - 3.6 0.8
IL
HIGH Level Output Voltage IOH 100 PA 2.7 - 3.6 VCC - 0.2
OH
IOH 6 mA 2.7 2.2
IOH 8 mA 3.0 2.4
IOH 12 mA 3.0 2.2
IOH 100 PA 2.7 - 3.6 VCC - 0.2
IOH 4 mA 2.3 2.0
IOH 6 mA 2.3 1.8
IOH 8 mA 2.3 1.7
IOH 100 PA 1.65 - 2.3 VCC - 0.2
IOH 3 mA 1.65 1.25
IOH 100 PA 1.4 - 1.6 VCC - 0.2
IOH 1 mA 1.4 1.05
IOH 100 PA 1.2 VCC - 0.1
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V
CC
(V)
2.3 - 2.7 1.6
1.65 - 2.3 0.65 x V
1.4 - 1.6 0.65 x V
1.2 0.65 x V
2.3 - 2.7 0.7
1.65 - 2.3 0.35 x V
1.4 - 1.6 0.35 x V
1.2 0.5 x V
Min Max Units
CC
CC
CC
V
V
CC
CC
CC
V
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