參數(shù)資料
型號: TL16C554AI
廠商: Texas Instruments, Inc.
英文描述: ASYNCHRONOUS-COMMUNICATIONS ELEMENT
中文描述: 異步通信元
文件頁數(shù): 7/40頁
文件大?。?/td> 605K
代理商: TL16C554AI
TL16C554A, TL16C554AI
ASYNCHRONOUS-COMMUNICATIONS ELEMENT
SLLS509A
AUGUST 2001
REVISED JULY 2003
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions, standard voltage (5 V-nominal)
MIN
NOM
MAX
UNIT
Supply voltage, VCC
Clock high-level input voltage at XTAL1, VIH(CLK)
Clock low-level input voltage at XTAL1, VIL(CLK)
High-level input voltage, VIH
Low-level input voltage, VIL
Clock frequency, fclock
4.75
5
5.25
V
2
VCC
0.8
V
0.5
V
2
VCC
0.8
V
0.5
V
16
70
MHz
°
C
°
C
Operating free-air temperature TA
O erating free-air tem erature, TA
TL16C554A
0
TL16C554AI
40
85
electrical characteristics over recommended ranges of operating free-air temperature and supply
voltage, standard voltage (5-V nominal) (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VOH
VOL
High-level output voltage
IOH =
1 mA
IOL = 1.6 mA
VCC = 5.25 V,
VI = 0 to 5.25 V,
VCC = 5.25 V,
Chip selected in write mode or chip deselected
2.4
V
Low-level output voltage
0.4
V
IIkg
Input leakage current
GND = 0,
All other terminals floating
±
10
μ
A
IOZ
High-impedance output
current
GND = 0,
VO = 0 to 5.25 V,
±
20
μ
A
ICC
Supply current
VCC = 5.25 V,
RX, DSR, DCD, CTS, and RI at 2 V,
All other inputs at 0.8 V, XTAL1 at 4 MHz,
No load on outputs,
TA = 25
°
C,
Baud rate = 50 kilobits per second
50
mA
Ci(XTAL1)
Co(XTAL2)
Ci
Co
All typical values are at VCC = 5 V, TA = 25
°
C.
These parameters apply for all outputs except XTAL2.
Clock input capacitance
15
20
pF
Clock output capacitance
VCC = 0, VSS = 0, all other terminals grounded,
f = 1 MHz, TA = 25
°
C
20
30
pF
Input capacitance
Output capacitance
6
10
20
pF
pF
10
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