Fairchild NC7ST08 service manual
NC7ST08
NC7ST08 TinyLogic
January 1997
Revised August 2004
TinyLogic
General Description
The NC7ST08 is a single 2-In put high pe rform anc e CMOS
AND Gate, with TTL-compatible inputs. Ad vanced Silicon
Gate CMOS fabrication assures high speed and low power
circuit operation. E SD protection diodes inherently g uard
both inputs and outpu t with respect to the V
rails. High gain circuitry offers high noise immunity and
reduced sensitivity to input edge rate. The TTL-compa tible
inputs facilitate TTL to NMOS/CMOS inte rfacing. Device
performance is similar to MM74HCT but with 1/2 the output
current drive of HC/HCT.
HST 2-Input AND Gate
Features
■ Space saving SOT23 or SC70 5-lead package
■ Ultra small MicroPak
■ High Speed:
t
6 ns (typ), VCC = 5V, CL = 15 pF, TA = 25°C
and GND
CC
PD
■ Low Quiescent Power, I
■ Balanced Output Drive; 2 mA I
■ TTL-compatible inputs
leadless package
< 1 µA, VCC = 5.5V
CC
, −2 mA I
OL
OH
Ordering Code:
Order Package Product Code
Number Number Top Mark
NC7ST08M5X MA05B 8S08 5-Lead SOT23, JEDEC MO-178, 1.6mm 3k Units on Tape and Reel
NC7ST08P5X MAA05A T08 5-Lead SC70, EIAJ SC-88a, 1.25mm Wide 3k Units on Tape and Reel
NC7ST08L6X MAC06A NN 6-Lead MicroPak, 1.0mm Wide 5k Units on Tape and Reel
Logic Symbol
IEEE/IEC
Package Descript ion Supplied As
Connection Diagrams
Pin Assignme nts for SC70 and SOT23
HST 2-Input AND Gate
Pin Descriptions
Pin Names Description
A, B Inputs
Y Output
NC No Connect
Pad Assignment for MicroPak
(Top View)
Function Table
Y = AB
Inputs Output
ABY
LLL
LHL
HLL
HHH
H = HIGH Logic Le v el L = LOW Logic Lev el
TinyLogic is a registered tradema rk of F airc hild Semiconduct or Corporation.
MicroPak is a tradem ark of Fairchild Semiconductor Corporation.
© 2004 Fairchild Semiconductor Corporation DS012182 www.fairchildsemi.com
(Top Thru View)
Absolute Maximum Ratings(Note 1) Recommended Operating
Supply Voltage (VCC) −0.5V to +7.0V
DC Input Diode Current (I
NC7ST08
@V
< −0.5V −20 mA
IN
≥ VCC + 0.5V +20 mA
@V
IN
DC Input Voltage (V
DC Output Diode Current (I
< −0.5V −20 mA
V
OUT
V
> VCC + 0.5V +20 mA
OUT
Output Voltage (V
)
IK
) −0.5V to VCC + 0.5V
IN
OUT
)
OK
) −0.5V to VCC + 0.5V
DC Output Source or Sink Current
) ±12.5 mA
(I
OUT
DC V
or Ground Current per
CC
Supply Pin (I
Storage Temperature (T
Junction Temperature (T
Lead Temperature (T
or I
CC
) ±25 mA
GND
) −65°C to +150°C
STG
) 150°C
J
);
L
(Soldering, 10 seconds) 260
Power Dissipation (P
) @+85°C
D
SOT23-5 200 mW
SC70-5 150 mW
Conditions
Supply Voltage 4.5V to 5.5V
Input Voltage (V
Output Voltage (V
Operating Temperature (TA) −40°C to +85°C
Input Rise and Fall Time (t
V
= 5.0V 0 ns to 500 ns
CC
Thermal Resistance (
SOT23-5 300
SC70-5 425
Note 1: Absolute Maximum Ratings a re those va lues beyon d which d amage to the device may occu r. The databook specifica tions should be met ,
°C
without exception, t o ensure that the system design is reliab le over its
power supply, temperature, an d output/input loading variables. F airchild
does not recom mend op eration of circuits o utside th e databoo k specific ations.
Note 2: Unused inputs must be held HIGH or LOW. They may not float.
(Note 2)
) 0.0V to V
IN
)0V to V
OUT
, tf)
r
θ
)
JA
DC Electrical Characteristics
Symbol Parameter
HIGH Level Input Voltage 4.5–5.5 2.0 2.0 V
V
IH
V
LOW Level Input Voltage 4.5–5.5 0.8 0.8 V
IL
V
HIGH Level Output Voltage 4.5 4.4 4.5 4.4
OH
V
LOW Level Output Voltage 4.5 0 0.1 0.1
OL
I
Input Leakage Current 5.5 ±0.1 ±1.0 V 0 ≤ VIN ≤ 5.5V
IN
Quiescent Supply Current 5.5 1.0 10.0 µAVIN = VCC or GND
I
CC
I
CCTICC
per Input 5.5 2.0 2.9 mA One Input VIN = 0.5V or 2.4V,
V
CC
(V) Min Typ Max Min Max
4.5 4.18 4.35 4.13 IOH = −2 mA
4.5 0.10 0.26 0.33 I
TA = +25°CT
= 40°C to +85°C
A
Units Conditions
V
V
IOH = −20 µA
VIN = V
IH
IOL = 20 µA
= 2 mA
OL
VIN = V
IL
Other Input VCC or GND
CC
CC
°C/W
°C/W
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AC Electrical Characteristics
V
Symbol Parameter
t
, Propagation Delay 5.0 4 12
PLH
t
PHL
CC
(V) Min Typ Max Min Max Number
4.5 6 16 20
5.5 5 14 18
, Output Transition Time 5.0 4 10 ns CL = 15 pF
t
TLH
t
THL
4.5 11 25 31
5.5 10 21 26
C
Input Capacitance Open 10 pF
IN
C
Power Dissipation Capacitance 5.0 6 pF (Note 3) Figure 2
PD
Note 3: CPD is defined as the value of the internal equivalent capacitance which is derived from dynamic operating current consumption (I
loading and operating at 50% duty cycle. (See Figure 2.) C
= (CPD)(VCC)(fIN) + (ICCstatic).
I
CCD
TA = +25°CT
617
12 27 31
11 26 30
is related to I
PD
dynamic operating current by the express ion:
CCD
= 40°C to +85°C
A
Units Conditions
ns C
= 15 pF
L
ns C
= 50 pF
L
ns CL = 50 pF
AC Loading and Waveforms
) at no output
CCD
Figure
Figures
1, 3
Figures
1, 3
NC7ST08
CL includes load and s tr ay c apacitance
Input PR R = 1.0 MHz; t
= 500 ns
w
FIGURE 1. AC Test Circuit
Input = AC Wavefor m; PRR = variable; Duty Cycle = 50%
FIGURE 2. I
Test Circuit
CCD
FIGURE 3. AC Waveforms
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