SN54LS13J [MOTOROLA]
SCHMITT TRIGGERS DUAL GATE/HEX INVERTER; 施密特触发器双栅极/六反相器
| 型号： | SN54LS13J |
| 厂家： | 
MOTOROLA |
| 描述： | SCHMITT TRIGGERS DUAL GATE/HEX INVERTER |
| 文件： | 总3页 (文件大小：66K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SN54/74LS13
SN54/74LS14
SCHMITT TRIGGERS
DUAL GATE/HEX INVERTER
The SN54LS/74LS13 and SN54LS/74LS14 contain logic gates/inverters
which accept standard TTL input signals and provide standard TTL output
levels. They are capable of transforming slowly changing input signals into
sharplydefined, jitter-freeoutputsignals. Additionally, theyhavegreaternoise
margin than conventional inverters.
Each circuit contains a Schmitt trigger followed by a Darlington level shifter
and a phase splitter driving a TTL totem pole output. The Schmitt trigger uses
positive feedback to effectively speed-up slow input transitions, and provide
different input threshold voltages for positive and negative-going transitions.
This hysteresis between the positive-going and negative-going input
thresholds (typically 800 mV) is determined internally by resistor ratios and is
essentially insensitive to temperature and supply voltage variations.
SCHMITT TRIGGERS
DUAL GATE/HEX INVERTER
LOW POWER SCHOTTKY
J SUFFIX
CERAMIC
CASE 632-08
14
1
LOGIC AND CONNECTION DIAGRAMS
SN54/74LS13
V
CC
14
13
12
11
10
9
8
N SUFFIX
PLASTIC
CASE 646-06
14
1
D SUFFIX
SOIC
CASE 751A-02
1
2
3
4
5
6
9
7
14
GND
1
SN54/74LS14
V
CC
ORDERING INFORMATION
14
13
12
11
10
8
SN54LSXXJ
SN74LSXXN
SN74LSXXD
Ceramic
Plastic
SOIC
1
2
3
4
5
6
7
GND
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min
Typ
Max
Unit
V
CC
Supply Voltage
54
74
4.5
4.75
5.0
5.0
5.5
5.25
V
T
A
Operating Ambient Temperature Range
54
74
–55
0
25
25
125
70
°C
I
I
Output Current — High
Output Current — Low
54, 74
–0.4
mA
mA
OH
54
74
4.0
8.0
OL
FAST AND LS TTL DATA
5-24
SN54/74LS13 • SN54/74LS14
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Limits
Min
1.5
0.6
0.4
Typ
Max
2.0
Symbol
Parameter
Positive-Going Threshold Voltage
Negative-Going Threshold Voltage
Hysteresis
Unit
V
Test Conditions
= 5.0 V
V
T+
V
CC
V
CC
V
CC
V
CC
V
V
V
1.1
V
= 5.0 V
= 5.0 V
T–
–V
0.8
V
T+ T–
Input Clamp Diode Voltage
–0.65 –1.5
V
= MIN, I = –18 mA
IN
IK
54
74
2.5
2.7
3.4
3.4
V
V
Output HIGH Voltage
Output LOW Voltage
V
= MIN, I
= –400 µA, V = V
IN IL
OH
OL
CC
OH
V
54, 74
74
0.25
0.35
0.4
0.5
V
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
= MIN, I
= MIN, I
= 4.0 mA, V = 2.0 V
IN
OL
V
V
= 8.0 mA, V = 2.0 V
IN
OL
I
I
Input Current at Positive-Going Threshold
Input Current at Negative-Going Threshold
–0.14
–0.18
1.0
mA
mA
µA
mA
mA
mA
= 5.0 V, V = V
IN
T+
T+
= 5.0 V, V = V
IN
T–
T–
20
= MAX, V = 2.7 V
IN
I
IH
Input HIGH Current
0.1
= MAX, V = 7.0 V
IN
I
I
Input LOW Current
–0.4
–100
= MAX, V = 0.4 V
IN
IL
Short Circuit Current (Note 1)
Power Supply Current
–20
= MAX, V
= 0 V
OUT
OS
LS13
2.9
8.6
4.1
12
6.0
16
Total, Output HIGH
Total, Output LOW
LS14
LS13
LS14
I
mA
V
CC
= MAX
CC
7.0
21
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (T = 25°C)
A
Max
LS13
22
LS14
Symbol
Parameter
Unit
ns
Test Conditions
t
Propagation Delay, Input to Output
Propagation Delay, Input to Output
22
22
PLH
V = 5.0 V
CC
= 15 pF
C
L
t
27
ns
PHL
3 V
1.6 V
V
V
IN
0.8 V
0 V
t
t
PLH
PHL
1.3 V
1.3 V
OUT
Figure 1. AC Waveforms
FAST AND LS TTL DATA
5-25
SN54/74LS13 • SN54/74LS14
5
4
V
= 5 V
CC
= 25°C
T
A
3
2
1
0
0
0.4
0.95
1.2
1.8
2
V
, INPUT VOLTAGE (VOLTS)
IN
Figure 2. V versus V
IN OUT
Transfer Function
2
T
= 25°C
A
V
T+
1.6
1.2
0.8
0.4
0
V
T–
∆
V
T
4.5
4.75
5
5.25
5.5
V
, POWER SUPPLY VOLTAGE (VOLTS)
CC
Figure 3. Threshold Voltage and Hysteresis
versus Power Supply Voltage
1.9
V
1.7
1.5
T+
1.3
1.1
V
T–
0.9
0.7
∆
°
V
T
–55°
0°
25
75°
125°
T , AMBIENT TEMPERATURE (
°C)
A
Figure 4. Threshold Voltage Hysteresis
versus Temperature
FAST AND LS TTL DATA
5-26
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