AK2548 Datasheet, PDF (12/30 Pages) Asahi Kasei Microsystems – 7 channel E1 Transceiver

ASAHI KASEI
AC CHARACTERISTICS(Clock/Data)
[AK2548]
Parameter
Symbol Min
Typ
Max
Clock Frequency
MCLK fci 2.047795 2.048000 2.048204
32.76472 32.76800 32.77127
Clock Pulse Width
TCLK tpwhi
244
tpwli
Clock Pulse Width
RCLK tpwho
244
tpwlo
Duty Cycle
RCLK
50
TCLK
Setup/Hold Time
RCLK tsu1
150
RPOS
th1
RNEG
Setup/Hold Time
TCLK tsu2
50
TPOS
th2
TNEG
Rise Time
RCLK
tr
100
RPOS
RNEG
Fall Time
TCLK
tf
40
TPOS
TNEG
Note1) Duty Cycle:(tpwho/( tpwho+tpwlo))×100%
Note2) Drive 15pF Load Capacitance
Units Condition
MHz ±100ppm
MHz
ns RefertoFig.2
ns RefertoFig.1
% Note1
ns RefertoFig.1
ns RefertoFig.2
ns RefertoFig.3
Note2
ns RefertoFig.3
Note2
C0028-E-00
12
1999/9