MC74AC643 Datasheet, PDF (4/6 Pages) Motorola, Inc – OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE OUTPUTS

MC74AC643 MC74ACT643
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74AC
74AC
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Min Typ Max Min Max
tPLH
tPHL
tPZH
Propagation Delay
An to Bn or Bn to An
Propagation Delay
An to Bn or Bn to An
Output Enable Time
3.3 1.5
5.0 1.5
3.3 1.5
5.0 1.5
3.3 2.5
5.0 1.5
8.5 1.0 9.5
ns
3-5
6.5 1.0 7.5
8.5 1.0 9.5
ns
3-5
6.5 1.0 7.5
12.5 2.0 13.5
ns
3-7
9.5 1.0 10.0
tPZL
Output Enable Time
3.3 2.5
5.0 1.5
12.5 2.0 13.5
ns
3-8
9.5 1.0 10.0
tPHZ
Output Disable Time
3.3 2.0
5.0 1.5
12.0 1.0 12.5
ns
3-7
9.0 1.0 10.0
tPLZ
Output Disable Time
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
3.3 2.0
5.0 1.5
12.0 1.5 13.5
ns
3-8
9.5 1.0 10.5
DC CHARACTERISTICS
74ACT
74ACT
Symbol
Parameter
VCC
(V)
TA = +25°C
TA =
–40°C to +85°C
Unit
Conditions
Typ Guaranteed Limits
VIH
VIL
VOH
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
4.5
1.5 2.0
2.0
5.5
1.5 2.0
2.0
4.5
1.5 0.8
0.8
5.5
1.5 0.8
0.8
4.5 4.49 4.4
4.4
5.5 5.49 5.4
5.4
V
VOUT = 0.1 V
or VCC – 0.1 V
V
VOUT = 0.1 V
or VCC – 0.1 V
V
IOUT = –50 µA
*VIN = VIL or VIH
4.5
3.86
3.76
V
–24 mA
5.5
4.86
4.76
IOH
–24 mA
VOL
Maximum Low Level
Output Voltage
4.5 0.001 0.1
0.1
5.5 0.001 0.1
0.1
V
IOUT = 50 µA
*VIN = VIL or VIH
4.5
0.36
0.44
V
24 mA
5.5
0.36
0.44
IOL
24 mA
IIN
Maximum Input
Leakage Current
5.5
±0.1
±1.0
µA
VI = VCC, GND
∆ICCT
Additional Max. ICC/Input
5.5
0.6
1.5
mA
VI = VCC – 2.1 V
IOZT
IOLD
IOHD
Maximum
3-State
Current
†Minimum Dynamic
Output Current
VI (OE) = VIL, VIH
5.5
±0.6
±6.0
µA
VI = VCC, GND
VO = VCC, GND
5.5
75
mA
VOLD = 1.65 V Max
5.5
–75
mA
VOHD = 3.85 V Min
ICC
Maximum Quiescent
Supply Current
5.5
8.0
80
µA
VIN = VCC or GND
* All outputs loaded; thresholds on input associated with output under test.
† Maximum test duration 2.0 ms, one output loaded at a time.
FACT DATA
5-4