NC7NZ34 TinyLogic UHS Triple Buffer
July 2001
Revised November 2005
NC7NZ34
TinyLogic
UHS Triple Buffer
General Description
The NC7NZ34 is a triple buffer from Fairchild’s Ultra High
Speed Series of TinyLogic
in the space saving US8 pack-
age. The device is fabricated with advanced CMOS tech-
nology to achieve ultra high speed with high output drive
while maintaining low static power dissipation over a very
broad V
CC
operating range. The device is specified to
operate over the 1.65V to 5.5V V
CC
range. The inputs and
outputs are high impedance when V
CC
is 0V. Inputs toler-
ate voltages up to 7V independent of V
CC
operating volt-
age.
Features
s
Space saving US8 surface mount package
s
MicroPak
Pb-Free leadless package
s
Ultra High Speed: t
PD
2.4 ns Typ into 50 pF at 5V V
CC
s
High Output Drive:
±
24 mA at 3V V
CC
s
Broad V
CC
Operating Range: 1.65V to 5.5V
s
Power down high impedance inputs/outputs
s
Overvoltage tolerant inputs facilitate 5V to 3V translation
s
Patented noise/EMI reduction circuitry implemented
Ordering Code:
Product
Order
Number
NC7NZ34K8X
NC7NZ34L8X
Package
Number
MAB08A
MAC08A
Code
Top Mark
NZ34
P9
8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3k Units on Tape and Reel
Pb-Free 8-Lead MicroPak, 1.6 mm Wide
5k Units on Tape and Reel
Package Description
Supplied As
Pb-Free package per JEDEC J-STD-020B.
Logic Symbol
IEEE/IEC
Connection Diagrams
Pin Descriptions
Pin Names
A
1
, A
2
, A
3
Y
1
, Y
2
, Y
3
Description
Data Inputs
Output
(Top View)
Pin One Orientation Diagram
Function Table
Y
=
A
Input
A
L
H
H
=
HIGH Logic Level
L
=
LOW Logic Level
AAA represents Product Code Top Mark - see ordering code
Note:
Orientation of Top Mark determines Pin One location. Read the top
product code mark left to right, Pin One is the lower left pin (see diagram).
Output
Y
L
H
Pad Assignments for MicroPak
(Top Thru View)
TinyLogic is a registered trademark of Fairchild Semiconductor Corporation.
MicroPak is a trademark of Fairchild Semiconductor Corporation.
© 2005 Fairchild Semiconductor Corporation
DS500494
www.fairchildsemi.com
NC7NZ34
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
CC
)
DC Input Voltage (V
IN
)
DC Output Voltage (V
OUT
)
DC Input Diode Current (I
IK
)
V
IN
<
0V
DC Output Diode Current (I
OK
)
V
OUT
<
0V
DC Output Source/Sink Current (I
OUT
)
DC V
CC
/GND Current (I
CC
/I
GND
)
Storage Temperature (T
STG
)
Junction Temperature under Bias (T
J
)
Junction Lead Temperature (T
L
)
(Soldering, 10 seconds)
Power Dissipation (P
D
) @
+
85
°
C
260
°
C
250 mW
−
0.5V to
+
7.0V
−
0.5V to
+
7.0V
−
0.5V to
+
7.0V
−
50 mA
−
50 mA
±
50 mA
±
100 mA
−
65
°
C to
+
150
°
C
150
°
C
Recommended Operating
Conditions
(Note 2)
Supply Voltage
Operating (V
CC
)
Data Retention
Input Voltage (V
IN
)
Output Voltage (V
OUT
)
Input Rise and Fall Time (t
r
, t
f
)
V
CC
=
1.8V, 2.5V
±
0.2V
V
CC
=
3.3V
±
0.3V
V
CC
=
5.5V
±
0.5V
Operating Temperature (T
A
)
Thermal Resistance (
θ
JA
)
0 to 20 ns/V
0 to 10 ns/V
0 to 5 ns/V
1.65V to 5.5V
1.5V to 5.5V
0V to 5.5V
0V to V
CC
−
40
°
C to
+
85
°
C
250
°
C/W
Note 1:
Absolute maximum ratings are DC values beyond which the device
may be damaged or have its useful life impaired. The datasheet specifica-
tions should be met, without exception, to ensure that the system design is
reliable over its power supply, temperature, and output/input loading vari-
ables. Fairchild does not recommend operation outside datasheet specifi-
cations.
Note 2:
Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol
V
IH
V
IL
V
OH
Parameter
HIGH Level Control
Input Voltage
LOW Level Control
Input Voltage
HIGH Level Control
Output Voltage
V
CC
(V)
1.8
±
0.15
2.3 to 5.5
1.8
±
0.15
2.3 to 5.5
1.65
2.3
3.0
4.5
1.65
2.3
3.0
3.0
4.5
V
OL
LOW Level Control
Output Voltage
1.65
2.3
3.0
4.5
1.65
2.3
3.0
3.0
4.5
I
IN
I
OFF
I
CC
Input Leakage Current
Power Off Leakage Current
Quiescent Supply Current
0 to 5.5
0.0
1.65 to 5.5
1.55
2.2
2.9
4.4
1.29
1.9
2.4
2.3
3.8
1.65
2.3
3.0
4.5
1.52
2.14
2.75
2.62
4.13
0.0
0.0
0.0
0.0
0.08
0.10
0.16
0.24
0.25
0.1
0.1
0.1
0.1
0.24
0.3
0.4
0.55
0.55
±0.1
1.0
1.0
Min
0.75 V
CC
0.7 V
CC
0.25 V
CC
0.3 V
CC
1.55
2.2
2.9
4.4
1.29
1.9
2.4
2.3
3.8
0.1
0.1
0.1
0.1
0.24
0.3
0.4
0.55
0.55
±1.0
10
10
µA
µA
µA
V
V
IN
=
V
IL
I
OL
=
4 mA
I
OL
=
8 mA
I
OL
=
16 mA
I
OL
=
24 mA
I
OL
=
32 mA
0
≤
V
IN
≤
5.5V
V
IN
or V
OUT
=
5.5V
V
IN
=
5.5V, GND
I
OL
=
100
µA
V
V
IN
=
V
IH
I
OH
= −4
mA
I
OH
= −8
mA
I
OH
= −16
mA
I
OH
= −24
mA
I
OH
= −32
mA
I
OH
= −100 µA
T
A
= +25°C
Typ
Max
T
A
= −40°C
to
+85°C
Min
0.75 V
CC
0.7 V
CC
0.25 V
CC
0.3 V
CC
Max
V
V
Units
Conditions
www.fairchildsemi.com
2
NC7NZ34
AC Electrical Characteristics
Symbol
t
PLH
t
PHL
Parameter
Propagation Delay
V
CC
(V)
1.8
±
0.15
2.5
±
0.2
3.3
±
0.3
5.0
±
0.5
t
PLH
t
PHL
C
IN
C
PD
Input Capacitance
Power Dissipation
Capacitance
Propagation Delay
3.3
±
0.3
5.0
±
0.5
0
3.3
5.0
Min
1.8
1.0
0.8
0.5
1.2
0.8
T
A
= +25°C
Typ
4.6
3.0
2.3
1.8
3.0
2.4
2.5
9
11
Max
8.0
5.2
3.6
2.9
4.6
3.8
T
A
= −40°C
to
+85°C
Min
1.8
1.0
0.8
0.5
1.2
0.8
Max
8.8
5.8
4.0
3.2
5.1
4.2
ns
pF
pF
(Note 3)
Figure 2
C
L
=
50 pF,
R
L
=
500Ω
Figures
1, 3
ns
C
L
=
15 pF,
R
L
=
1 MΩ
Figures
1, 3
Units
Conditions
Figure
Number
Note 3:
C
PD
is defined as the value of the internal equivalent capacitance which is derived from dynamic operating current consumption (I
CCD
) at no output
loading and operating at 50% duty cycle. (See Figure 2.) C
PD
is related to I
CCD
dynamic operating current by the expression:
I
CCD
=
(C
PD
)(V
CC
)(f
IN
)
+
(I
CC
static).
Dynamic Switching Characteristics
Symbol
V
OLP
V
OLV
Parameter
Quiet Output Dynamic Peak V
OL
Quiet Output Dynamic Valley V
OL
Conditions
C
L
=
50pF, V
IH
=
5.0V, V
IL
=
0V
C
L
=
50pF, V
IH
=
5.0V, V
IL
=
0V
V
CC
(V)
5.0
5.0
T
A
=
25°C
Typical
0.8
−0.8
Unit
V
V
AC Loading and Waveforms
C
L
includes load and stray capacitance
Input PRR
=
1.0 MHz; t
W
=
500 ns
FIGURE 1. AC Test Circuit
Input
=
AC Waveform; t
r
=
t
f
=
1.8 ns;
PRR
=
10 MHz; Duty Cycle
=
50%
FIGURE 3. AC Waveforms
FIGURE 2. I
CCD
Test Circuit
3
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