DS2154
Table 16-3. AC Characteristics—Transmit Side
(VDD = 5V ±5%, TA = 0°C to +70°C for DS2154L, TA = -40°C to +85°C for DS2154LN.)
(See Figure 16-7, Figure 16-8, and Figure 16-9.)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
TCLK Period
tCP
tCH
tCL
tLP
tLH
tLL
tSP
tSP
tSH
tSL
488
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
75
75
TCLK Pulse Width
TCLKI Period
488
75
75
122
122
50
TCLKI Pulse Width
648
448
1
2
TSYSCLK Period
TSYSCLK Pulse Width
50
tCH-5
or
TSYNC or TSSYNC Setup to TCLK or
TSYSCLK Falling
tSU
tPW
tSU
20
50
20
ns
ns
ns
tSH-5
TSYNC or TSSYNC Pulse Width
TSER, TSIG, TDATA, TLINK, TPOSI,
TNEGI Setup to TCLK, TSYSCLK,
TCLKI Falling
TSER, TSIG, TDATA, TLINK, TPOSI,
TNEGI Hold from TCLK, TSYSCLK,
TCLKI Falling
tHD
20
ns
ns
TCLK, TCLKI, or TSYSCLK Rise and
Fall Times
tR, tF
25
Delay TCLKO to TPOSO, TNEGO Valid
Delay TCLK to TESO Valid
Delay TCLK to TCHBLK, TCHBLK,
TSYNC, TLCLK
tDD
tD1
50
50
ns
ns
tD2
tD3
50
75
ns
ns
Delay TSYSCLK to TCHCLK, TCHBLK
NOTES:
1) TSYSCLK = 1.544MHz.
2) TSYSCLK = 2.048MHz.
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