Fairchild Semiconductor 74LCXZ162244MEX Datasheet
September 2000
Revised September 2000
74LCXZ162244
Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant
Inputs/Outputs and 26
Ω Series Resistors in the Outputs
74LCXZ162244 Low Voltage 16-Bit Buffer/Line Driver with 5V Tolerant Inputs/Outputs and 26
in the Outputs
General Description
The LCXZ162244 contains sixteen non-inverting buffers
with 3-STA TE outputs designed to be employed as a memory and address driver, clock driver, or bus oriented transmitter/receiver. The device is nibble controlled. Each nibble
has separate 3-STATE control inputs which can be shorted
together for full 16-bit operation.
When V
the high impedance state during power up or power down.
this places the outputs in the high impedance (Z) state preventing intermittent low impedance loading or glitching in
bus oriented applications.
The LCXZ162244 is designed for low voltage (2.7V or
3.3V) V
signal environment.
In addition the outputs include 26
tors to reduce overshoot and undershoot and are designed
to sink/source 12 mA at V
The LCXZ162244 is fabr icated with an advanced CMOS
technology to achieve high speed operation while maintaining CMOS low power dissipation.
is between 0 and 1.5V, the LCXZ162244 is in
CC
applications with capability of interfacing to a 5V
CC
Ω (nominal) series re sis-
= 3.0V.
CC
Features
■ 5V tolerant inputs and outputs
■ Guaranteed power up/down high impedance
■ Supports live insertion/withdrawal
CC
> 2000V
> 200V
Ω series resistors
= 3.0V)
■ Outputs have equivalent 26
■ 2.7V–3.6V V
■ 5.3 ns t
±12 mA output drive (V
■
■ Implements patented noise/EMI reduction circuitry
■ Latch-up performance exce eds 500 mA
■ ESD performance:
Human body model
Machine model
specifications provided
CC
max (VCC = 3.0V), 20 µA ICC max
PD
Ordering Code:
Order Number
74LCXZ162244MEA MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide
74LCXZ162244MEX
(Note 1)
74LCXZ162244MTD MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
74LCXZ162244MTX
(Note 1)
Note 1: Use this Order Number to receive devices in Tape and Reel.
Package
Number
[TUBES]
MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide
[TAPE and REEL]
[TUBES]
MTD48 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide
[TAPE and REEL]
Package Description
© 2000 Fairchild Semiconductor Corporation DS500251 www.fairchildsemi.com
Ω
Series Resistors
Connection Diagram Logic Symbol
74LCXZ162244
Pin Descriptions
Pin Names Description
OE
n
I
0–I15
O
0–O15
Truth Tables
Inputs Outputs Inputs Outputs
OE
1
LL L LL L
LH H LH H
HX Z HX Z
I0–I
3
O0–O
3
OE
3
Output Enable Input (Active LOW)
Inputs
Outputs
I8–I
11
O8–O
11
Inputs Outputs Inputs Outputs
OE
2
I4–I
7
O4–O
7
LL L LL L
LH H LH H
HX Z HX Z
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Functional Description
The LCXZ162244 contains sixteen non-inverting buffers
with 3-STATE standard outputs. The device is nibble
(4 bits) controlled with each nibble functioning identically,
but independent of the other. The control pins can be
shorted together to obtain full 16-bit operation. The
3-STATE outputs are controlled by an Output Enable (OE
input for each nibble. When OE
2-state mode. When OE
is LOW, the outputs are in
n
is HIGH, the outputs are in th e
n
high impedance mode, but this does not interfere with
entering new data into the inputs.
www.fairchildsemi.com 2
)
n
OE
4
Logic Diagram
I12–I
15
O12–O
15
Absolute Maximum Ratings(Note 2)
Symbol Parameter Value Conditions Units
V
V
V
I
I
I
I
I
T
CC
I
O
IK
OK
O
CC
GND
STG
Supply Voltage −0.5 to +7.0 V
DC Input Voltage −0.5 to +7.0 V
DC Output Voltage −0.5 to +7.0 Output in 3-STATE or VCC = 0–1.5V
−0.5 to V
+ 0.5 Output in HIGH or LOW State (Note 3)
CC
DC Input Diode Current −50 VI < GND mA
DC Output Diode Current −50 VO < GND
+50 V
O
> V
CC
mA
DC Output Source/Sink Current ±50 mA
DC Supply Current per Supply Pin ±100 mA
DC Ground Current per Ground Pin ±100 mA
Storage Temperature −65 to +150 °C
Recommended Operating Conditions (Note 4)
Symbol Parameter Min Max Units
V
V
V
I
OH/IOL
T
A
∆t/∆V Input Edge Rate, V
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 Ratings. The “Recom-
mended Operating Conditions” table will define the conditions fo r ac t ual device operation.
Note 3: I
Note 4: Unused inputs must be held HIGH or LOW. They may not flo at .
Supply Voltage Operating 2.7 3.6 V
CC
Input Voltage 05.5V
I
Output Voltage HIGH or LOW State 0 V
O
3-STATE 0 5.5
Output Current VCC = 3.0V − 3.6V ±12
= 2.7V − 3.0V ±8
V
CC
Free-Air Operating T emperature −40 85 °C
= 0.8V–2.0V, VCC = 3.0V 0 10 ns/V
IN
Absolute Maximum Rating must be observed.
O
CC
mA
74LCXZ162244
V
V
DC Electrical Characteristics
Symbol Parameter Conditions
V
IH
V
IL
V
OH
V
OL
I
I
I
OZ
I
OFF
I
PU/PD
I
CC
∆I
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 µA2.7 − 3.6 VCC − 0.2
LOW Level Output Voltage IOL = 100 µA2.7 − 3.6 0.2
Input Leakage Current 0 ≤ VI ≤ 5.5V 2.7 − 3.6 ±5.0 µA
3-STATE Output Leakage 0 ≤ VO ≤ 5.5V
Power-Off Leakage Current VI or VO = 5.5V 0 10 µA
Power Up/Down VO = 0.5V to V
3-STATE Output Current VI = GND or V
Quiescent Supply Current VI = VCC or GND 2.7 − 3.6 225
Increase in ICC per Input VIH = VCC −0.6V 2.7 − 3.6 500 µA
CC
IOH = −4 mA 2.7 2.2
IOH = −6 mA 3.0 2.4
IOH = −8 mA 2.7
IOH = −12 mA 3.0 2.0
IOL = 4 mA 2.7 0.4
IOL = 6 mA 3.0 0.55
IOL = 8 mA 2.7 0.6
IOL = 12 mA 3.0 0.8
VI = VIH or V
3.6V ≤ VI, VO ≤ 5.5V (Note 5) 2.7 − 3.6 ±225
IL
CC
CC
3 www.fairchildsemi.com
V
2.7 − 3.6 ±5.0 µA
0 − 1.5 ±5.0 µA
TA = −40°C to +85°C
CC
(V) Min Max
Units
V
V
µA
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