參數(shù)資料
型號(hào): TLK1221RHA
廠商: Texas Instruments, Inc.
英文描述: ETHERNET TRANSCEIVER
中文描述: 以太網(wǎng)收發(fā)器
文件頁(yè)數(shù): 10/23頁(yè)
文件大?。?/td> 501K
代理商: TLK1221RHA
www.ti.com
CL
5 pF
CL
5 pF
50
W
50
W
t
r
t
f
CLOCK
80%
50%
20%
t
r
t
f
2 V
0.8 V
DATA
1.4 V
LVTTL OUTPUT SWITCHING CHARACTERISTICS
over recommended operating conditions (unless otherwise noted)
TRANSMITTER TIMING REQUIREMENTS
over recommended operating conditions (unless otherwise noted)
TLK1221
SLLS713–FEBRUARY 2007
Figure 8. Transmitter Test Setup
Figure 9. TTL Data I/O Valid Levels for AC Measurement
PARAMETER
Clock rise time
Clock fall time
Data rise time
Data fall time
TEST CONDITIONS
MIN
0.3
0.3
0.3
0.3
TYP
MAX
1.5
1.5
1.5
1.5
UNIT
ns
ns
ns
ns
t
r(RBC)
t
f(RBC)
t
r
t
f
80% to 20% output voltage, C = 5 pF (see
Figure 9
)
TBI normal mode (see
Figure 3
), R
ω
= 125 MHz,
data valid prior to RBC0 rising
TBI normal mode (see
Figure 3
), R
ω
= 61.44
MHz, data valid prior to RBC0 rising
TBI normal mode (see
Figure 3
), R
ω
= 125 MHz,
data valid after RBC0 rising
TBI normal mode (see
Figure 3
), R
ω
= 61.44
MHz, data valid after RBC0 rising
TBI half-rate mode, R
ω
= 125 MHz (see
Figure 2
)
TBI half-rate mode, R
ω
= 125 MHz (see
Figure 2
)
2.5
ns
Data setup time
(RD0–RD9)
t
su(d1)
5
ns
2
ns
t
h(d1)
Data hold time (RD0–RD9)
4
ns
Data setup time
(RD0–RD9)
t
su(d3)
2.5
ns
t
h(d3)
Data hold time (RD0–RD9)
1.5
ns
PARAMETER
Data setup time (TD0–TD9)
Data hold time (TD0–TD9)
TD[0,9] data rise and fall time
TEST CONDITIONS
MIN
1.6
0.8
TYP
MAX
UNIT
ns
ns
ns
t
su(d4)
t
h(d4)
t
r
, t
f
See
Figure 9
2
10
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