ds21ft40 Maxim Integrated Products, Inc., ds21ft40 Datasheet - Page 78

• Manufacturer Part Number: ds21ft40
• Description: Ds21ft40 Four X Three 12 Channel E1 Framer
• Manufacturer: Maxim Integrated Products, Inc.

AC CHARACTERISTICS – RECEIVE SIDE
PARAMETER
RCLK Period
RCLK Pulse Width
RSYSCLK Period
RSYSCLK Pulse Width
RSYNC Set Up to
RSYSCLK Falling
RSYNC Pulse Width
RPOS/RNEG Set UP to
RCLK Falling
RPOS/RNEG Hold From
RCLK Falling
RSYSCLK/RCLKI Rise
and Fall Times
Delay RCLK to RSER
Valid
Delay RCLK to RSYNC
Delay RSYSCLK to RSER
Valid
Delay RSYSCLK to
RMSYNC, RSYNC
See Figures 17-8 to 17-10 for details.
NOTES:
1. RSYSCLK = 1.544 MHz.
2. RSYSCLK = 2.048 MHz.
SYMBOL
t
t
SH
t
R
t
t
t
t
t
t
t
t
t
t
t
t
–40ºC to +85ºC; V
PW
CH
HD
CP
CL
SU
SU
D1
D2
D3
D4
SP
SP
, t
t
SL
F
(0ºC to 70ºC; V
MIN
122
122
75
75
50
50
20
50
20
20
78 of 87
DD
TYP
488
648
488
DD
= 2.97 to 3.63V for DS21FT40N)
= 2.97 to 3.63V for DS21FT40;
t SH –5
MAX
25
50
50
50
50
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
DS21FT40
1
2