INTEGRAL IN74AC620

TECHNICAL DATA
IN74AC620
Octal 3-State Inverting
Bus Transceiver
High-Speed Silicon-Gate CMOS
The IN74AC620 is identical in pinout to the LS/ALS620,
HC/HCT620. The device inputs are compatible with standard CMOS
outputs; with pullup resistors, they are compatible with LS/ALS
outputs.
The IN74AC620 is a 3-state transceiver that is used for 2-way
communication between data buses. Two separate enables are
available. The enable for bus A to B is active-high, the enable for bus
B to A is active-low.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA; 0.1 µA @ 25°C
• High Noise Immunity Characteristic of CMOS Devices
• Outputs Source/Sink 24 mA
ORDERING INFORMATION
IN74AC620N Plastic
IN74AC620DW SOIC
TA = -40° to 85° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Control Inputs
PIN 20=VCC
PIN 10 = GND
476
Output
Enable
Direction
Operation
L
L
Data Transmitted
from Bus B to
Bus A (inverted)
H
H
Data Transmitted
from Bus A to
Bus B (inverted)
H
L
Buses Isolated
L
H
(High Impedance
State)
IN74AC620
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
-0.5 to +7.0
V
VCC
DC Supply Voltage (Referenced to GND)
VIN
DC Input Voltage (Referenced to GND)
-0.5 to VCC +0.5
V
DC Output Voltage (Referenced to GND)
-0.5 to VCC +0.5
V
DC Input Current, per Pin
±20
mA
IOUT
DC Output Sink/Source Current, per Pin
±50
mA
ICC
DC Supply Current, VCC and GND Pins
±50
mA
PD
Power Dissipation in Still Air, Plastic DIP+
SOIC Package+
750
500
mW
-65 to +150
°C
260
°C
VOUT
IIN
Tstg
TL
Storage Temperature
Lead Temperature, 1 mm from Case for 10 Seconds
(Plastic DIP or SOIC Package)
*
Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C
SOIC Package: : - 7 mW/°C from 65° to 125°C
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
VIN, VOUT
DC Supply Voltage (Referenced to GND)
DC Input Voltage, Output Voltage (Referenced to GND)
TJ
Junction Temperature (PDIP)
TA
Operating Temperature, All Package Types
IOH
Output Current - High
IOL
Output Current - Low
tr, tf
*
Parameter
Input Rise and Fall Time
(except Schmitt Inputs)
*
Min
Max
Unit
2.0
6.0
V
0
VCC
V
140
°C
+85
°C
-24
mA
24
mA
150
40
25
ns/V
-40
VCC =3.0 V
VCC =4.5 V
VCC =5.5 V
0
0
0
VIN from 30% to 70% VCC
This device contains protection circuitry to guard against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated
voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range
GND≤(VIN or VOUT)≤VCC.
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC).
Unused outputs must be left open.
477
IN74AC620
DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND)
VCC
Guaranteed Limits
V
25 °C
-40°C to
85°C
Unit
VOUT= 0.1 V or VCC-0.1 V
3.0
4.5
5.5
2.1
3.15
3.85
2.1
3.15
3.85
V
Maximum Low Level Input Voltage
VOUT= 0.1 V or VCC-0.1 V
3.0
4.5
5.5
0.9
1.35
1.65
0.9
1.35
1.65
V
Minimum High-Level
Output Voltage
IOUT ≤ -50 µA
3.0
4.5
5.5
2.9
4.4
5.4
2.9
4.4
5.4
V
3.0
4.5
5.5
2.56
3.86
4.86
2.46
3.76
4.76
3.0
4.5
5.5
0.1
0.1
0.1
0.1
0.1
0.1
VIN= VIH or VIL
IOL=12 mA
IOL=24 mA
IOL=24 mA
3.0
4.5
5.5
0.36
0.36
0.36
0.44
0.44
0.44
Symbol
Parameter
VIH
Minimum High-Level
Input Voltage
VIL
VOH
Test Conditions
*
VIN=VIH or VIL
IOH=-12 mA
IOH=-24 mA
IOH=-24 mA
VOL
Maximum Low-Level
Output Voltage
IOUT ≤ 50 µA
V
*
IIN
Maximum Input
Leakage Current
VIN=VCC or GND
5.5
±0.1
±1.0
µA
IOZ
Maximum ThreeState Leakage
Current
VIN (OE)= VIH or VIL
VIN =VCC or GND
VOUT =VCC or GND
5.5
±0.6
±6.0
µA
IOLD
+Minimum Dynamic
Output Current
VOLD=1.65 V Max
5.5
75
mA
IOHD
+Minimum Dynamic
Output Current
VOHD=3.85 V Min
5.5
-75
mA
ICC
Maximum Quiescent
Supply Current
(per Package)
VIN=VCC or GND
5.5
80
µA
*
8.0
All outputs loaded; thresholds on input associated with output under test.
+Maximum test duration 2.0 ms, one output loaded at a time.
Note: IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC
478
IN74AC620
AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=3.0 ns)
VCC*
Symbol
Parameter
Guaranteed Limits
25 °C
V
-40°C to
85°C
Min
Max
Min
Max
Unit
tPLH
Propagation Delay, A to B , B to A (Figure 1)
3.3
5.0
1.5
1.5
8.5
6.5
1.0
1.0
9.5
7.5
ns
tPHL
Propagation Delay, A to B , B to A (Figure 1)
3.3
5.0
1.5
1.5
8.5
6.0
1.0
1.0
9.5
7.0
ns
tPZH
Propagation Delay, Direction or Output
Enable to A or B (Figure 2)
3.3
5.0
2.5
1.5
11.5
8.5
2.0
1.0
13.0
9.5
ns
tPZL
Propagation Delay, Direction or Output
Enable to A or B (Figure 2)
3.3
5.0
2.5
1.5
12.0
9.0
2.0
1.0
13.5
10.0
ns
tPHZ
Propagation Delay, Direction or Output
Enable to A or B (Figure 2)
3.3
5.0
2.0
1.5
12.0
9.0
1.0
1.0
13.0
10.0
ns
tPLZ
Propagation Delay, Direction or Output
Enable to A or B (Figure 2)
3.3
5.0
2.0
1.5
12.0
9.0
1.5
1.0
13.0
10.0
ns
CIN
Maximum Input Capacitance
5.0
4.5
4.5
pF
Typical @25°C,VCC=5.0 V
CPD
Power Dissipation Capacitance
45
pF
Voltage Range 3.3 V is 3.3 V ±0.3 V
Voltage Range 5.0 V is 5.0 V ±0.5 V
*
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
479
IN74AC620
EXPANDED LOGIC DIAGRAM
480