參數(shù)資料
型號(hào)： SN54LS244J
廠商： MOTOROLA INC
元件分類： 通用總線功能
英文描述： OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
中文描述： LS SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, CDIP20
封裝： CERAMIC, DIP-20
文件頁(yè)數(shù)： 3/6頁(yè)
文件大?。?/td> 191K
代理商： SN54LS244J
5-389
FAST AND LS TTL DATA
SN54/74LS240
SN54/74LS241
SN54/74LS244
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE
(unless otherwise specified)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
VIH
Input HIGH Voltage
2.0
V
Guaranteed Input HIGH Voltage for
All Inputs
VIL
Input LOW Voltage
54
0.7
V
Guaranteed Input LOW Voltage for
All Inputs
74
0.8
VT+–VT–
VIK
Hysteresis
0.2
0.4
V
VCC = MIN
VCC = MIN, IIN = –18 mA
VCC = MIN, IOH = –3.0 mA
VCC = MIN, IOH = MAX
Input Clamp Diode Voltage
–0.65
–1.5
V
VOH
Output HIGH Voltage
54, 74
2.4
3.4
V
54, 74
2.0
V
VOL
Output LOW Voltage
54, 74
0.25
0.4
V
IOL = 12 mA
VCC = VCC MIN,
per Truth Table
74
0.35
0.5
V
IOL = 24 mA
VIN = VIL or VIH
IOZH
IOZL
Output Off Current HIGH
20
μ
A
VCC = MAX, VOUT = 2.7 V
VCC = MAX, VOUT = 0.4 V
VCC = MAX, VIN = 2.7 V
VCC = MAX, VIN = 7.0 V
VCC = MAX, VIN = 0.4 V
VCC = MAX
Output Off Current LOW
–20
μ
A
IIH
Input HIGH Current
20
μ
A
0.1
mA
IIL
IOS
Input LOW Current
–0.2
mA
Output Short Circuit Current (Note 1)
–40
–225
mA
ICC
Power Supply Current
Total, Output HIGH
27
mA
VCC = MAX
Total, Output LOW
LS240
44
LS241/244
46
Total at HIGH Z
LS240
50
LS241/244
54
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS
(TA = 25
°
C, VCC = 5.0 V)
Symbol
Parameter
Limits
Unit
Test Conditions
Min
Typ
Max
tPLH
tPHL
Propagation Delay, Data to Output
LS240
9.0
12
14
18
ns
RL = 667
tPLH
tPHL
Propagation Delay, Data to Output
LS241/244
12
12
18
18
ns
CL = 45 pF,
tPZH
tPZL
tPLZ
Output Enable Time to HIGH Level
15
23
ns
Output Enable Time to LOW Level
20
30
ns
Output Disable Time from LOW Level
15
25
ns
RL = 667
tPHZ
Output Disable Time from HIGH Level
10
18
ns
CL = 5.0 pF,
相關(guān)PDF資料
PDF描述
SN54LS241J OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
SN74LS241N OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS
SN74LS242 QUAD BUS TRANSCEIVER
SN74LS243 QUAD BUS TRANSCEIVER
SN74LS242DW QUAD BUS TRANSCEIVER
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