User guide

DS2181A
041995 29/32
AC ELECTRICAL CHARACTERISTICS
1,2
RECEIVE (0°C to 70°C, V
DD
= 5V + 5%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Propagation Delay RCLK to
RMSYNC, RFSYNC, RSTS,
RCHCLK, RAF
t
PRS
75 ns
Propagation Delay RCLK to RSER,
RSD
t
PRD
75 ns
Transition Time All Outputs t
TTR
20 ns
RCLK Period t
P
488 ns
RCLK Pulse Width t
WL
,t
WH
244 ns
RCLK Rise and Fall Times t
R
,t
F
20 ns
RPOS, RNEG Setup to RCLK Fall-
ing
t
SRD
50 ns
RPOS, RNEG Hold to RCLK Fall-
ing
t
HRD
50 ns
Propagation Delay RCLK to RLOS,
RRA, RBV, RFER,RDMA, RCL
t
PRA
75 ns
Minimum RST Pulse Width t
RST
1 µs
NOTES:
1. Measured at V
IH
= 2.0 or V
IL
= .8 and 10 ns. maximum rise and fall time.
2. Output load capacitance = 100 pf.
CAPACITANCE (t
A
= 25°C)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Input Capacitance C
IN
5 pF
Output Capacitance C
OUT
7 pF