參數(shù)資料
型號(hào)： S374
廠商： Texas Instruments, Inc.
英文描述： OCTAL D-TYPE TRANSPARENT LATCHES AND EDGE-TRIGGERED FLIP-FLOPS
中文描述： 八路D型透明鎖存器和邊沿觸發(fā)觸發(fā)器
文件頁(yè)數(shù)： 6/28頁(yè)
文件大?。?/td> 685K
代理商： S374
SN54LS373, SN54LS374, SN54S373, SN54S374,
SN74LS373, SN74LS374, SN74S373, SN74S374
OCTAL D-TYPE TRANSPARENT LATCHES AND EDGE-TRIGGERED FLIP-FLOPS
SDLS165B
–
OCTOBER 1975
–
REVISED AUGUST 2002
6
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
(
’
LS devices)
Supply voltage, V
CC
(see Note 1)
Input voltage, V
I
Off-state output voltage
Package thermal impedance,
θ
JA
(see Note 2): DB package
7 V
7 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5 V
70
°
C/W
58
°
C/W
69
°
C/W
60
°
C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NS package
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DW package
N package
Storage temperature range, T
stg
Stresses beyond those listed under
“
absolute maximum ratings
”
may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under
“
recommended operating conditions
”
is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. Voltage values are with respect to network ground terminal.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
–
65
°
C to 150
°
C
recommended operating conditions
SN54LS
’
NOM
SN74LS
’
NOM
UNIT
MIN
MAX
MIN
MAX
VCC
VOH
IOH
IOL
Supply voltage
4.5
5
5
4.75
5
5.25
V
High-level output voltage
5.5
5.5
V
High-level output current
–
1
–
2.6
mA
Low-level output current
12
24
mA
tw
Pulse duration
CLK high
15
15
ns
CLK low
15
5
↓
20
↑
20
↓
5
↑
–
55
15
5
↓
20
↑
20
↓
0
↑
tsu
Data setup time
’
LS373
ns
’
LS374
th
Data hold time
’
LS373
’
LS374
ns
TA
Operating free-air temperature
The th specification applies only for data frequency below 10 MHz. Designs above 10 MHz should use a minimum of 5 ns (commercial only).
125
0
70
°
C
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