NSC 74ACT125

54AC/74AC125 # 74ACT125
Quad Buffer with TRI-STATEÉ Outputs
General Description
Features
The ’AC/’ACT125 contains four independent non-inverting
buffers with TRI-STATE outputs.
Y
Y
Y
Logic Symbol
ICC reduced by 50%
Outputs source/sink 24 mA
’ACT125 has TTL-compatible outputs
Connection Diagrams
Pin Assignment
for DIP, SOIC and Flatpak
IEEE/IEC
TL/F/10692–1
Pin Assignment
for LCC
TL/F/10692 – 2
TL/F/10692 – 3
Pin Names
Description
An, Bn
On
Inputs
Outputs
Function Table
Inputs
Output
An
Bn
On
L
L
H
L
H
X
L
H
Z
H e HIGH Voltage Level
L e LOW Voltage Level
Z e HIGH Impedance
X e Immaterial
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
FACTTM is a trademark of National Semiconductor Corporation.
C1995 National Semiconductor Corporation
TL/F/10692
RRD-B30M75/Printed in U. S. A.
54AC/74AC125 # 74ACT125 Quad Buffer with TRI-STATE Outputs
March 1993
Absolute Maximum Ratings (Note 1)
Recommended Operating
Conditions
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (VCC)
DC Input Diode Current (IK)
VI e b0.5V
VI e VCC a 0.5V
DC Input Voltage (VI)
DC Output Diode Current (IOK)
VO e b0.5V
VO e VCC a 0.5V
DC Output Voltage (VO)
DC Output Source
or Sink Current (IO)
DC VCC or Ground Current
per Output Pin (ICC or IGND)
Storage Temperature (TSTG)
Junction Temperature (TJ)
CDIP
PDIP
Supply Voltage (VCC)
’AC
’ACT
Input Voltage (VI)
b 0.5V to a 7.0V
b 20 mA
a 20 mA
2.0V to 6.0V
4.5V to 5.5V
0V to VCC
0V to VCC
Output Voltage (VO)
Operating Temperature (TA)
74AC/ACT
54AC/ACT
b 0.5V to VCC a 0.5V
b 20 mA
a 20 mA
b 40§ C to a 85§ C
b 55§ C to a 125§ C
Minimum Input Edge Rate (DV/Dt)
’AC Devices
VIN from 30% to 70% of VCC
VCC @ 3.3V, 4.5V, 5.5V
Minimum Input Edge Rate (DV/Dt)
’ACT Devices
VIN from 0.8V to 2.0V
VCC @ 4.5V, 5.5V
b 0.5V to VCC a 0.5V
g 50 mA
g 50 mA
b 65§ C to a 150§ C
125 mV/ns
125 mV/ns
175§ C
140§ C
Note 1: Absolute maximum ratings are those values beyond which damage
to the device may occur. The databook specifications should be met, without
exception, to ensure that the system design is reliable over its power supply,
temperature, and output/input loading variables. National does not recommend operation of FACT TM circuits outside databook specifications.
DC Characteristics for ’AC Family Devices
Symbol
Parameter
VCC
(V)
74AC
54AC
74AC
TA e a 25§ C
TA e
b 55§ C to a 125§ C
TA e
b 40§ C to a 85§ C
Typ
VIH
VIL
VOH
IIN
Conditions
Guaranteed Limits
Minimum High Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
2.1
3.15
3.85
2.1
3.15
3.85
2.1
3.15
3.85
V
VOUT e 0.1V
or VCC b 0.1V
Maximum Low Level
Input Voltage
3.0
4.5
5.5
1.5
2.25
2.75
0.9
1.35
1.65
0.9
1.35
1.65
0.9
1.35
1.65
V
VOUT e 0.1V
or VCC b 0.1V
Minimum High Level
Output Voltage
3.0
4.5
5.5
2.99
4.49
5.49
2.9
4.4
5.4
2.9
4.4
5.4
2.9
4.4
5.4
V
2.56
3.86
4.86
2.4
3.7
4.7
2.46
3.76
4.76
V
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
V
3.0
4.5
5.5
0.36
0.36
0.36
0.50
0.50
0.50
0.44
0.44
0.44
V
5.5
g 0.1
g 1.0
g 1.0
mA
3.0
4.5
5.5
VOL
Units
Maximum Low Level
Output Voltage
Maximum Input
Leakage Current
3.0
4.5
5.5
0.002
0.001
0.001
*All outputs loaded; thresholds on input associated with output under test.
2
IOUT e b50 mA
*VIN e VIL or VIH
b 12 mA
b 24 mA
IOH
b 24 mA
IOUT e 50 mA
*VIN e VIL or VIH
12 mA
IOL
24 mA
24 mA
VI e VCC, GND
DC Characteristics for ’AC Family Devices (Continued)
Symbol
Parameter
VCC
(V)
74AC
54AC
74AC
TA e a 25§ C
TA e
b 55§ C to a 125§ C
TA e
b 40§ C to a 85§ C
Typ
IOZ
Maximum TRI-STATE
Current
² Minimum Dynamic
Output Current
IOLD
IOHD
ICC
Maximum Quiescent
Supply Current
Units
Conditions
Guaranteed Limits
g 10.0
g 5.0
mA
VI (OE) e VIL, VIH
VI e VCC, VGND
VO e VCC, GND
5.5
50
75
mA
VOLD e 1.65V Max
5.5
b 50
b 75
mA
VOHD e 3.85V Min
80.0
40.0
mA
VIN e VCC
or GND
5.5
g 0.5
5.5
4.0
² Maximum test duration 2.0 ms, one output loaded at a time.
Note : IIN and ICC
@
ICC for 54AC
3.0V are guaranteed to be less than or equal to the respective limit
@
25§ C is identical to 74AC
@
@
5.5V VCC.
25§ C.
DC Characteristics for ’ACT Family Devices
Symbol
Parameter
VCC
(V)
74ACT
74ACT
TA e a 25§ C
TA e
b 40§ C to a 85§ C
Typ
Units
Conditions
Guaranteed Limits
VIH
Minimum High Level
Input Voltage
4.5
5.5
1.5
1.5
2.0
2.0
2.0
2.0
V
VOUT e 0.1V
or VCC b 0.1V
VIL
Maximum Low Level
Input Voltage
4.5
5.5
1.5
1.5
0.8
0.8
0.8
0.8
V
VOUT e 0.1V
or VCC b 0.1V
VOH
Minimum High Level
Output Voltage
4.5
5.5
4.49
5.49
4.4
5.4
4.4
5.4
V
3.86
4.86
3.76
4.76
V
0.1
0.1
0.1
0.1
V
4.5
5.5
0.36
0.36
0.44
0.44
V
4.5
5.5
VOL
Maximum Low Level
Output Voltage
4.5
5.5
0.001
0.001
IOUT e b50 mA
*VIN e VIL or VIH
b 24 mA
IOH
b 24 mA
IOUT e 50 mA
*VIN e VIL or VIH
24 mA
IOL
24 mA
IIN
Maximum Input Leakage Current
5.5
g 0.1
g 1.0
mA
VI e VCC, GND
IOZ
Maximum TRI-STATE
Current
5.5
g 0.5
g 5.0
mA
VI e VIL, VIH
VO e VCC, GND
ICCT
Maximum ICC/Input
5.5
1.5
mA
VI e VCC b 2.1V ³
IOLD
² Minimum Dynamic
Output Current
IOHD
ICC
Maximum Quiescent
Supply Current
0.6
5.5
75
mA
VOLD e 1.65V Max
5.5
b 75
mA
VOHD e 3.85V Min
40.0
mA
VIN e VCC
or GND
5.5
4.0
*All outputs loaded; thresholds on input associated with output under test.
² Maximum test duration 2.0 ms, one output loaded at a time.
³ May be measured per the JEDEC Alternate Method.
3
AC Electrical Characteristics
Symbol
Parameter
VCC*
(V)
74AC
54AC
74AC
TA e a 25§ C
CL e 50 pF
TA e b55§ C
to a 125§ C
CL e 50 pF
TA e b40§ C
to a 85§ C
CL e 50 pF
Min
Max
Units
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
Data to Output
3.3
5.0
1.0
1.0
6.5
5.5
9.0
7.0
1.0
1.0
10.0
7.5
ns
tPHL
Propagation Delay
Data to Output
3.3
5.0
1.0
1.0
6.5
5.0
9.0
7.0
1.0
1.0
10.0
7.5
ns
tPZH
Output Enable Time
3.3
5.0
1.0
1.0
6.0
5.0
10.5
7.0
1.0
1.0
11.0
8.0
ns
tPZL
Output Enable Time
3.3
5.0
1.0
1.0
7.5
5.5
10.0
8.0
1.0
1.0
11.0
8.5
ns
tPHZ
Output Disable Time
3.3
5.0
1.0
1.0
7.5
6.5
10.0
9.0
1.0
1.0
10.5
9.5
ns
tPLZ
Output Disable Time
3.3
5.0
1.0
1.0
7.5
6.5
10.5
9.0
1.0
1.0
11.5
9.5
ns
*Voltage Range 3.3 is 3.3V g 0.3V
Voltage Range 5.0 is 5.0V g 0.5V
AC Electrical Characteristics
Symbol
Parameter
VCC*
(V)
74ACT
74ACT
TA e a 25§ C
CL e 50 pF
TA e b40§ C
to a 85§ C
CL e 50 pF
Units
Min
Typ
Max
Min
Max
5.0
1.0
6.5
9.0
1.0
10.0
ns
Propagation Delay
Data to Output
5.0
1.0
7.0
9.0
1.0
10.0
ns
tPZH
Output Enable Time
5.0
1.0
6.0
8.5
1.0
9.5
ns
tPZL
Output Enable Time
5.0
1.0
7.0
9.5
1.0
10.5
ns
tPHZ
Output Disable Time
5.0
1.0
7.0
9.5
1.0
10.5
ns
tPLZ
Output Disable Time
5.0
1.0
7.5
10.0
1.0
10.5
ns
tPLH
Propagation Delay
Data to Output
tPHL
*Voltage Range 5.0 is 5.0V g 0.5V
Capacitance
Symbol
Parameter
AC/ACT
Units
Conditions
Typ
CIN
Input Capacitance
4.5
pF
VCC e OPEN
CPD
Power Dissipation
Capacitance
45.0
pF
VCC e 5.0V
4
Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows:
74AC
125
P
Temperature Range Family
74AC e Commercial
54AC e Military
74ACT e Commercial TTL-Compatible
C
QR
Special Variations
Xe
Devices shipped in 13× reels
QR e Commercial grade device
with burn-in
QB e Military grade device with
environmental and burn-in
processing shipped in tubes
Device Type
Package Code
P e Plastic DIP
D e Ceramic DIP
F e Flatpak
L e Leadless Ceramic Chip Carrier (LCC)
S e Small Outline (SOIC)
Temperature Range
C e Commercial (b40§ C to a 85§ C)
M e Military (b55§ C to a 125§ C)
5
Physical Dimensions inches (millimeters)
20 Terminal Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
14-Lead Ceramic Dual-In-Line Package (D)
NS Package Number J14A
6
Physical Dimensions inches (millimeters) (Continued)
14-Lead Small Outline Integrated Circuit (S)
NS Package Number M14A
14-Lead Plastic Dual-In-Line Package (P)
NS Package Number N14A
7
54AC/74AC125 # 74ACT125 Quad Buffer with TRI-STATE Outputs
Physical Dimensions inches (millimeters) (Continued)
14-Lead Ceramic Flatpak (F)
NS Package Number W14B
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