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74AC08
QUAD 2-INPUT AND GATE
■ HIGH SPEED: t
■ LOW POWER DISSIPATION:
= 2µA(MAX.) at TA=25°C
I
CC
■ HIGH NOISE IMMUNITY:
V
= V
NIH
■ 50Ω TRANSMISSION LINE DRIVING
= 28 % VCC (MIN.)
NIL
= 4ns (TYP.) at VCC = 5V
PD
CAPABILITY
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
| = IOL = 24mA (MIN)
OH
■ BALANCED PROPAGATION DELAYS:
t
≅ t
PLH
■ OPERATING VOLTAGE RANGE:
V
CC
■ PIN AND FUNCTION COMPATIBLE WITH
PHL
(OPR) = 2V to 6V
74 SERIES 08
■ IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74AC08 is an advanced high-speed CMOS
QUAD 2-INPUT AND GATE fabricated with
sub-micron silicon gate and double-layer metal
wiring C
2
MOS tecnology.
TSSOPDIP SOP
ORDER CODES
PACKAGE TUBE T & R
DIP 74AC08B
SOP 74AC08M 74AC08MTR
TSSOP 74AC08TTR
The internal circuit is composed of 2 stages
including buffer output , which enables high noise
immunity and stable output.
All inputs and outputs are equipped with
protection circuits against stat ic discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
1/8April 2001
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74AC08
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
1, 4, 9, 12 1A to 4A Data Inputs
2, 5, 10, 13 1B to 4B Data Inputs
3, 6, 8, 11 1Y to 4Y Data Outputs
7 GND Ground (0V)
14
V
CC
TRUTH TABLE
ABY
LLL
LHL
HLL
HHH
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
I
I
OK
I
I
or I
CC
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
Supply Voltage
CC
DC Input Voltage -0.5 to VCC + 0.5
I
DC Output Voltage -0.5 to VCC + 0.5
O
DC Input Diode Current
IK
DC Output Diode Current
DC Output Current
O
DC VCC or Ground Current
GND
Storage Temperature
stg
Lead Temperature (10 sec)
L
Positive Supply Voltage
-0.5 to +7 V
V
V
± 20 mA
± 20 mA
± 50 mA
± 200 mA
-65 to +150 °C
300 °C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
V
T
dt/dv
1) VIN from 30 % to 70% of V
2/8
Supply Voltage
CC
Input Voltage 0 to V
I
Output Voltage 0 to V
O
Operating Temperature
op
Input Rise and Fall Time V
CC
= 3.0, 4.5 or 5.5V (note 1)
CC
2 to 6 V
CC
CC
-55 to 125 °C
8 ns/V
V
V
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DC SPECIFICATIONS
Test Condition Value
= 25°C
Symbol Parameter
V
CC
(V)
V
V
V
V
I
I
OLD
I
OHD
1) Maxim um test duration 2ms, one output loaded at time
2) Incid ent wave swi tc hi ng is guara nt eed on transmi ssion line s wi t h i mpedance s as low as 50Ω
High Level Input
IH
Voltage
Low Level Input
IL
Voltage
High Level Output
OH
Voltage
Low Level Output
OL
Voltage
I
Input Leakage
I
Current
Quiescent Supply
CC
Current
Dynamic Output
Current (note 1, 2)
3.0
5.5 3.85 2.75 3.85 3.85
3.0
5.5 2.75 1.65 1.65 1.65
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
5.5
5.5
5.5
= 0.1 V or
V
O
V
-0.1V
CC
= 0.1 V or
V
O
V
-0.1V
CC
=-50 µA
I
O
I
=-50 µA
O
I
=-50 µA
O
I
=-12 mA
O
I
=-24 mA
O
I
=-24 mA
O
IO=50 µA
I
=50 µA
O
I
=50 µA
O
I
=12 mA
O
I
=24 mA
O
I
=24 mA
O
= VCC or GND
V
I
= VCC or GND
V
I
V
= 1.65 V max
OLD
V
= 3.85 V min
OHD
T
A
Min. Typ. Max. Min. Max. Min. Max.
2.1 1.5 2.1 2.1
1.5 0.9 0.9 0.9
2.9 2.99 2.9 2.9
4.4 4.49 4.4 4.4
5.4 5.49 5.4 5.4
2.56 2.46 2.4
3.86 3.76 3.7
4.86 4.76 4.7
0.002 0.1 0.1 0.1
0.001 0.1 0.1 0.1
0.001 0.1 0.1 0.1
0.36 0.44 0.5
0.36 0.44 0.5
0.36 0.44 0.5
± 0.1 ± 1 ± 1 µA
22040µA
74AC08
-40 to 85°C -55 to 125°C
75 50 mA
-75 -50 mA
Unit
V4.5 3.15 2.25 3.15 3.15
V4.5 2.25 1.35 1.35 1.35
V
V
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns)
Test Condition Value
T
Symbol Parameter
t
PLH tPHL
(*) Vol tage range is 3. 3V ± 0.3V
(**) Voltage range is 5.0V ±
Propagation Delay
Time
0.5V
V
3.3
5.0
CC
(V)
(*)
(**)
= 25°C
A
-40 to 85°C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
1.5 5.5 9.5 1.0 10 1.0 12.5
1.5 4.0 7.5 1.0 8.5 1.0 9.0
Unit
ns
3/8