Rainbow Electronics DS2182A - Manual (Page 18)

DS2182A
041995 18/22
CHARACTERISTICS 1,2 SERIAL PORT (0 ° C to 70 ° C; V
DD
= 5V + 10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
SDI to SCLK Setup t
DC
50 ns
SCLK to SDI Hold t
CDH
50 ns
SDI to SCLK Falling Edge t
CD
50 ns
SCLK Low Time t
CL
250 ns
SCLK High Time t
CH
250 ns
SCLK Rise and Fall Times t
R
,t
F
100 ns
CS to SCLK Setup t
CC
50 ns
SCLK to CS hold t
CCH
50 ns
CS Inactive Time t
CWH
2.5
µ
s
SCLK to SDO Valid t
CDV
200 ns
CS to SDO High Z t
CDZ
75 ns
NOTES:
1. Measured at V
IH
= 2.0 or V
IL
= .8 and 10ns maximum rise and fall time.
2. Output load capacitance = 100 pF.
AC ELECTRICAL CHARACTERISTICS 1,2 RECEIVE (0
°
C to 70
°
C; V
DD
= 5V + 10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
Propagation Delay RCLK to
RMSYNC, RFSYNC, RSISEL,
RSIGFR, RLCLK, RCHCLK t
PRS
75 ns
Propagation Delay RCLK to
RSER, RABCD, RLINK t
PRD
75 ns
Transition Time All Outputs t
TTR
20 ns
RCLK Period t
P
648 ns
RCLK Pulse Width t
WL
,t
WH
324 ns
RCLK Rise and Fall Times t
R
,t
F
20 ns
RPOS, RNEG Setup to RCLK
Falling t
SRD
50 ns
RPOS, RNEG Hold to RCLK
Falling t
HRD
50 ns
Propagation Delay RCLK to
RLOS, RYEL, RBV, RCL, RFER t
PRA
75 ns
Minimum RST Pulse Width t
RST
1 µ s
NOTES:
1. Measured at V
IH
= 2.0 or V
IL
= .8 and 10ns maximum rise and fall time.
2. Output load capacitance = 100 pF.