Fairchild NC7WZ38 service manual
NC7WZ38
NC7WZ38 TinyLogic
April 2000
Revised January 2005
TinyLogic
UHS Dual 2-Input NAND Gate
(Open Drain Output)
General Description
The NC7WZ38 is a dual 2-Input NAND Gate with open
drain output stage from Fairchild’s Ultra High Speed Series
of TinyLogic
CMOS technology to achie ve ultra high speed with high
output drive while maintaining low static power dissipation
over a very broad V
specified to operate over the 1.65V to 5.5V V
inputs and output are high impedance when V
Inputs tolerate voltages up to 7V inde pe nde nt o f V
ating voltage. The open drain output stage will tolerate volt-
ages up to 7V independent of V
impedance state.
. The device is fabricated with advanced
operating range. The device is
CC
CC
range. The
CC
is 0V.
CC
oper-
CC
when in the high
Ordering Code:
Product
Number Number Top Mark
NC7WZ38K8X MAB08A WZ38 8-Lead US8, JEDEC MO-187, Variation CA 3.1mm Wide 3k Units on Tape and Reel
NC7WZ38L8X MAC08A U5 Pb-Free 8-Lead MicroPak, 1.6 mm Wide 5k Units on Tape and Reel
Pb-Free pac k age per JEDEC J-STD- 020B.
Features
■ Space saving US8 surface mount package
■ MicroPak
■ Open Drain output stage for OR tied applications
■ Ultra High Speed; t
■ High Output Sink Drive; 24 mA at 3V V
■ Broad VCC Operating Range; 1.65V to 5.5V
■ Matches the performance of LCX when operated at
■ Power down high impedance inputs/output
■ Overvoltage Tolerant inputs facilitate 5V to 3V
■ Patented noise/EMI reduction circuitry implemented
Package Description Supplied AsOrder Package Code
Pb-Free leadless package
3.3V V
CC
translation
2.2 ns Typ into 50 pF at 5V V
PD
CC
CC
UHS Dual 2-Input NAND Gate (Open Drain Output)
TinyLogic is a registered trademark of Fairchild Semi co nductor Corporati on.
MicroPak is a tradem ark of Fairchild Semiconductor Corporation.
© 2005 Fairchild Semiconductor Corporation DS500271 www.fairchildsemi.com
Logic Symbol
NC7WZ38
Connection Diagrams
IEEE/IEC
Pin Descriptions
Pin Names Description
A
, B
n
n
Y
n
Inputs
Output
Function Table
Y = AB
Inputs Output
AB Y
LL*H
LH*H
HL*H
HH L
H = HIGH Logic Level
L = LOW Logic Level
*H = HIGH Impedance output state (Open D rain)
(Top View)
Pin One Orientation Diagram
AAA represents Product Code Top Mark - see ordering cod e
Note: Orientation of Top Mark determines Pin One location. Read the top
product code mark lef t to right, Pin One is the lo w er left pin (see diagram ).
Pad Assignments for MicroPak
(Top Thru View)
www.fairchildsemi.com 2
Absolute Maximum Ratings(Note 1) Recommended Operating
Supply Voltage (VCC) −0.5V to +7V
DC Input Voltage (V
DC Output Voltage (V
DC Input Diode Current (I
@V
< −0.5V −50 mA
IN
DC Output Diode Current (I
< −0.5V −50 mA
@V
OUT
DC Output Current (I
DC V
/GND Current (ICC/I
CC
Storage Temperature (T
Junction Temperature under Bias (T
Junction Lead Temperature (T
) −0.5V to +7V
IN
) −0.5V to +7V
OUT
)
IK
)
OK
) +50 mA
OUT
) ±100 mA
GND
) −65°C to +150°C
STG
) 150°C
J
);
L
(Soldering, 10 seconds) 260
Power Dissipation (P
) @ +85°C 250 mW
D
Conditions
Supply Voltage Operating (V
Supply Voltage Data Retention (V
Input Voltage (V
Output Voltage (V
Operating Temperature (TA) −40°C to +85°C
Input Rise and Fall Time (t
= 1.8V ± 0.15V, 2.5V ± 0.2V 0 ns/V to 20 ns/V
V
CC
V
= 3.3V ± 0.3V 0 ns/V to 10 ns/V
CC
V
= 5.0V ± 0.5V 0 ns/V to 5 ns/V
CC
Thermal Resistance (
°C
Note 1: Absolute maximum ratings are DC values beyond which t he devi ce
may be damag ed or hav e it s usefu l li fe i mpa ired. Th e da tas heet sp ecific ations should be met, without exception, to ensure that the system design is
reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation outside datasheet specifications.
Note 2: Unused inputs must be held HIGH or LOW. They may not float.
(Note 2)
) 1.65V to 5.5V
CC
) 1.5V to 5.5V
) 0V to 5.5V
IN
)0V to V
OUT
θ
JA
CC
, tf)
r
)250°C/W
DC Electrical Characteristics
V
Symbol Parameter
V
HIGH Level 1.65 to 1.95 0.75 V
IH
Input Voltage 2.3 to 5.5 0.7 V
V
LOW Level 1.65 to 1.95 0.25 V
IL
Input Voltage 2.3 to 5.5 0.3 V
I
HIGH Level
LKG
Output Leakage V
V
LOW Level 1.65 0.0 0.1 0.1
OL
Output Voltage 2.3 0.0 0.1 0.1
I
Input Leakage Current 5.5 ±0.1 ±1 µAVIN = 5.5V, GND
IN
I
Power Off Leakage Current 0.0 1 10 µAVIN or V
OFF
I
Quiescent Supply Current 1.65 to 5.5 1 10 µAVIN = 5.5V, GND
CC
CC
(V) MinTypMaxMinMax
5.5 ±5 ±10 µA
3.0 0.0 0.1 0.1
4.5 0.0 0.1 0.1
1.65 0.08 0.24 0.24
2.3 0.10 0.3 0.3 IOL = 8 mA
3.0 0.15 0.4 0.4 IOL = 16 mA
3.0 0.22 0.55 0.55 IOL = 24 mA
4.5 0.22 0.55 0.55 IOL = 32 mA
TA = +25°CT
CC
CC
A
0.75 V
0.7 V
CC
CC
= −40°C to +85°C
CC
CC
0.25 V
0.3 V
CC
Units Conditions
V
CC
V
VIN = V
VVIN = VIHIOL = 100 µA
V
IL
= VCC or GND
OUT
OUT
I
OL
= 5.5V
NC7WZ38
CC
= 4 mA
3 www.fairchildsemi.com
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