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参数资料
| 型号： | SN54AHCT138WR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 编、解码器及复用、解复用 |
| 英文描述： | AHCT/VHCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CDFP16 |
| 封装： | CERAMIC, FP-16 |
| 文件页数： | 4/8页 |
| 文件大小： | 115K |
| 代理商： | SN54AHCT138WR |
SN54AHCT138, SN74AHCT138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SCLS266I – DECEMBER 1995 – REVISED NOVEMBER 1999
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54AHCT138
SN74AHCT138
UNIT
MIN
MAX
MIN
MAX
UNIT
VCC
Supply voltage
4.5
5.5
4.5
5.5
V
VIH
High-level input voltage
2
V
VIL
Low-level input voltage
0.8
V
VI
Input voltage
0
5.5
0
5.5
V
VO
Output voltage
0
VCC
0
VCC
V
IOH
High-level output current
–8
mA
IOL
Low-level output current
8
mA
t/v
Input transition rise or fall rate
20
ns/V
TA
Operating free-air temperature
–55
125
–40
85
°C
NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
TA = 25°C
SN54AHCT138
SN74AHCT138
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
VOH
IOH = –50 mA
45 V
4.4
4.5
4.4
V
VOH
IOH = –8 mA
4.5 V
3.94
3.8
V
VOL
IOL = 50 mA
45 V
0.1
V
VOL
IOL = 8 mA
4.5 V
0.36
0.5
0.44
V
II
VI = VCC or GND
5.5 V
±0.1
±1
mA
ICC
VI = VCC or GND,
IO = 0
5.5 V
4
40
mA
ICC
One input at 3.4 V,
Other inputs at VCC or GND
5.5 V
1.35
1.5
mA
Ci
VI = VCC or GND
5 V
2
10
pF
This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or VCC.
switching characteristics over recommended operating free-air temperature range,
VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
LOAD
TA = 25°C
SN54AHCT138
SN74AHCT138
UNIT
PARAMETER
(INPUT)
(OUTPUT)
CAPACITANCE
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
tPLH
ABC
Any Y
CL =15 pF
7.6*
10.4*
1*
12*
1
12
ns
tPHL
A, B, C
Any Y
CL = 15 pF
7.6*
10.4*
1*
12*
1
12
ns
tPLH
G1
Any Y
CL =15 pF
6.6*
9.1*
1*
10.5*
1
10.5
ns
tPHL
G1
Any Y
CL = 15 pF
6.6*
9.1*
1*
10.5*
1
10.5
ns
tPLH
G2A G2B
Any Y
CL =15 pF
7*
9.6*
1*
11*
1
11
ns
tPHL
G2A, G2B
Any Y
CL = 15 pF
7*
9.6*
1*
11*
1
11
ns
tPLH
ABC
Any Y
CL =50 pF
8.1
11.4
1
13
1
13
ns
tPHL
A, B, C
Any Y
CL = 50 pF
8.1
11.4
1
13
1
13
ns
tPLH
G1
Any Y
CL =50 pF
7.1
10.1
1
11.5
1
11.5
ns
tPHL
G1
Any Y
CL = 50 pF
7.1
10.1
1
11.5
1
11.5
ns
tPLH
G2A G2B
Any Y
CL =50 pF
7.5
10.6
1
12
1
12
ns
tPHL
G2A, G2B
Any Y
CL = 50 pF
7.5
10.6
1
12
1
12
ns
* On products compliant to MIL-PRF-38535, this parameter is not production tested.
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