Fairchild Semiconductor 74VCXH162244MTX, 74VCXH162244MTD Datasheet
January 2000
Revised March 2000
74VCXH162244
Low Voltage 16-Bit Buffer/Line Driver with Bushold
and 26Ω Series Resistor in Outputs
74VCXH162244 Low Voltage 16-Bit Buffer/Line Driver with Bushold
General Description
The VCXH162244 contains sixteen non-inverting buffers
with 3-STATE outputs to b e 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 VCXH162244 data inputs include activ e bushold circuitry, eliminating the need for external pull-up resistors to
hold unused or floating data inputs at a valid logic level
The 74VCXH162244 is also designed with 26Ω series
resistors in the outputs. This design reduce s line noise in
applications such as memory address drivers, cl ock drivers, and bus transceivers/transmitters.
The 74VCXH16224 4 is desig ned for lo w voltage (1.65V to
3.6V) V
The 74VCXH162244 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintaining low CMOS power dissipation.
applications with output capability up to 3.6V.
CC
Features
■ 1.65V–3.6V VCC supply operation
■ 3.6V tolerant control inputs and outputs
■ Bushold on data inputs eliminates the need for external
pull-up/pull-down resistors
■ 26Ω series resistors in outputs
■ t
PD
3.3 ns max for 3.0V to 3.6V V
3.8 ns max for 2.3V to 2.7V V
7.6 ns max for 1.65V to 1.95V V
■ Static Drive (IOH/IOL)
±12 mA @ 3.0V V
±8 mA @ 2.3V V
±3 mA @ 1.65V V
■ Uses patented noise/EMI reduction circuitry
■ Latch-up performance exce eds 300 mA
■ ESD performance:
Human body model > 2000V
Machine model > 200V
CC
CC
CC
CC
CC
CC
Ordering Code:
Order Number
74VCXH162244MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
74VCXH162244MTX
(Note 1)
Note 1: Use this Order Nu m ber to receive devices in Tape and Reel.
Package
Number
[TUBES]
MTD48 48 -Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
[TAPE and REEL]
Package Descript ion
Logic Symbol Pin Descriptions
Pin Names Description
OE
n
I
0–I15
O
0–O15
© 2000 Fairchild Semiconductor Corporation DS500231 www.fairchildsemi.com
Output Enable Input (Active LOW)
Bushold Inputs
Outputs
Connection Diagram Truth Tables
OE
LL L
74VCXH162244
LH H
HX Z
OE
LL L
LH H
HX Z
OE
LL L
LH H
HX Z
OE
LL L
LH H
HX Z
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial (HIGH or LOW, inputs may not float)
Z = High Impedance
Inputs Outputs
1
I0–I
3
Inputs Outputs
2
I4–I
7
Inputs Outputs
3
I8–I
11
Inputs Outputs
4
I12–I
15
O0–O
O4–O
O8–O
O12–O
3
7
11
15
Functional Description
The 74VCXH16224 4 contains sixteen non-inver ting buffers wi th 3-STATE outputs. The device is nibble (4 bits) contr olled
with each nibble funct ioning i denticall y, but independent of ea ch other. The contro l pins may b e shorte d togeth er to ob tain
full 16-bit operation .Th e 3-STATE outputs are controlled by an Output En able (OE
are in the 2-state mode. When OE
is HIGH, the standard out put s are in th e hi g h imp ed ance mo de b ut th is do es no t inte r-
n
) input. When O En is LOW, the outputs
n
fere with entering new data into the inputs.
Logic Diagram
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Absolute Maximum Ratings(Note 2) Recommended Operating
Supply Voltage (VCC) −0.5V to +4.6V
DC Input Voltage (V
OE
n
– I
I
0
15
Output Voltage (V
)
I
−0.5V to 4.6V
−0.5V to VCC + 0.5V
)
O
Outputs 3-STATE −0.5V to +4.6V
Outputs Active (Note 3) −0.5V to V
DC Input Diode Current (I
< 0V −50 mA
V
I
DC Output Diode Current (I
< 0V −50 mA
V
O
> V
V
O
CC
)
IK
)
OK
+0.5V
CC
+50 mA
DC Output Source/Sink Current
) ±50 mA
(I
OH/IOL
or GND Current per
DC V
CC
Supply Pin (I
Storage Temperature Range (T
or GND) ±100 mA
CC
) −65°C to +150°C
STG
Conditions
Power Supply
Operating 1.65V to 3.6V
Data Retention Only 1.2V to 3.6V
Input Voltage −0.3V to V
Output Voltage (VO)
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 ±12 mA
= 2.3V to 2.7V ±8 mA
V
CC
= 1.65V to 2.3V ±3mA
V
CC
Free Air Operating Temperature (T
Minimum Input Edge Rate (∆t/∆V)
= 0.8V to 2.0V, VCC = 3.0V 10 ns/V
V
IN
Note 2: 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 Rat-
ings. The “Recommended Operating Conditions” table will define the conditions for actual device operation.
Absolute Maximum Rating must be observed.
Note 3: I
O
Note 4: Floating or unused control inputs must be held HIG H or LOW.
(Note 4)
OH/IOL
) −40°C to +85°C
A
DC Electrical Characteristics (2.7V < VCC ≤ 3.6V)
V
Symbol Parameter Conditions
V
IH
V
IL
V
OH
V
OL
I
I
I
I(HOLD)
I
I(OD)
I
OZ
I
OFF
I
CC
∆I
Note 5: An external driver must source at least the specified current to switch from LOW-to-HIGH.
Note 6: An external dri ve r m us t s ink at least the specified cur rent to switch from HIGH -t o-LOW.
Note 7: Outputs disab led or 3-STATE only.
HIGH Level Input Voltage 2.7–3.6 2.0 V
LOW Level Input Voltage 2.7–3.6 0.8 V
HIGH Level Output Voltage IOH = −100 µA 2.7–3.6 VCC − 0.2 V
LOW Level Output Voltage IOL = 100 µA 2.7–3.6 0.2 V
Input Leakage Current Control Pins 0 ≤ VI ≤ 3.6V 2.7–3.6 ±5.0 µA
Bushold Input Minimum VIN = 0.8V 3.0 75
Drive Hold Current VIN = 2.0V 3.0 −75
Bushold Input Over-Drive (Note 5) 3.6 450
Current to Change State (Note 6) 3.6 −450
3-STATE Output Leakage 0 ≤ VO ≤ 3.6V
Power-OFF Leakage Current 0 ≤ (VO) ≤ 3.6V 0 10 µA
Quiescent Supply Current VI = VCC or GND 2.7–3.6 20 µA
Increase in ICC per Input VIH = VCC −0.6V 2.7–3.6 750 µA
CC
Data Pins VI = VCC or GND 2.7–3.6 ±5.0 µA
IOH = −6 mA 2.7 2.2 V
IOH = −8 mA 3.0 2.4 V
IOH = −12 mA 3.0 2.2 V
IOL = 6 mA 2.7 0.4 V
IOL = 8 mA 3.0 0.55 V
IOL = 12 mA 3.0 0.8 V
VI = VIH or V
VCC ≤ (VO) ≤ 3.6V (Note 7) 2.7–3.6 ±20 µA
IL
CC
(V)
2.7–3.6 ±10 µA
Min Max Units
74VCXH162244
CC
CC
µA
µA
3 www.fairchildsemi.com
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