DS2154 Dallas Semiconducotr, DS2154 Datasheet - Page 81

• Manufacturer Part Number: DS2154
• Description: Enhanced E1 Single Chip Transceiver
• Manufacturer: Dallas Semiconducotr

AC CHARACTERISTICS -
TRANSMIT SIDE
See Figures 14-7 to 14-9 for details.
NOTES:
1. TSYSCLK=1.544 MHz.
2. TSYSCLK=2.048 MHz.
PARAMETER
TCLK Period
TCLK Pulse Width
TCLKI Period
TCLKI Pulse Width
TSYSCLK Period
TSYSCLK Pulse Width
TSYNC or TSSYNC Set Up toTCLK or
TSYSCLK falling
TSYNC or TSSYNC Pulse Width
TSER, TSIG, TDATA, TLINK, TPOSI,
TNEGI Set Up to TCLK, TSYSCLK,
TCLKI Falling
TSER, TSIG, TDATA, TLINK, TPOSI,
TNEGI Hold from TCLK, TSYSCLK,
TCLKI Falling
TCLK, TCLKI, or TSYSCLK Rise and
Fall Times
Delay TCLKO to TPOSO, TNEGO
Valid
Delay TCLK to TESO Valid
Delay TCLK to TCHBLK, TCHBLK,
TSYNC, TLCLK
Delay TSYSCLK to TCHCLK,
TCHBLK
SYMBOL
-40 C to +85 C; V
t
t
t
R
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CH
PW
HD
DD
CP
CL
LH
SH
SU
SU
D1
D2
D3
81 of 87
LP
LL
SP
SP
SL
, t
(0 C to 70 C; V
F
MIN
122
122
75
75
75
75
50
50
20
50
20
20
TYP
488
488
648
448
DD
DD
=5V =5% for DS2154LN)
=5V =5% for DS2154L;
t
CH
MAX
t
SH
25
50
50
50
75
-5 or
-5
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
DS2154
1
2