參數(shù)資料
型號: SN74AHCT245DGVR
廠商: TEXAS INSTRUMENTS INC
元件分類: 總線收發(fā)器
英文描述: AHCT/VHCT/VT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封裝: GREEN, PLASTIC, TVSOP-20
文件頁數(shù): 17/23頁
文件大?。?/td> 991K
代理商: SN74AHCT245DGVR
SN54AHCT245, SN74AHCT245
OCTAL BUS TRANSCEIVERS
WITH 3STATE OUTPUTS
SCLS233N OCTOBER 1995 REVISED MARCH 2005
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 4)
SN54AHCT245
SN74AHCT245
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 4: 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
SN54AHCT245
SN74AHCT245
UNIT
PARAMETER
TEST CONDITIONS
VCC
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
VOH
IOH = 50 mA
4.5 V
4.4
4.5
4.4
V
VOH
IOH = 8 mA
4.5 V
3.94
3.8
V
VOL
IOL = 50 mA
4.5 V
0.1
V
VOL
IOL = 8 mA
4.5 V
0.36
0.44
V
II
OE or DIR
VI = 5.5 V or GND
0 V to 5.5 V
±0.1
±1*
±1
mA
IOZ
A or B inputs
VO = VCC or GND
5.5 V
±0.25
±2.5
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
OE or DIR
VI = VCC or GND
5 V
2.5
10
pF
Cio
A or B inputs
VI = VCC or GND
5 V
4
pF
* On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V.
For I/O ports, the parameter IOZ includes the input leakage current.
This is the increase in supply current for each input at one of the specified TTL voltage levels, rather than 0 V or VCC.
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