1200/2400bps MSK Modem for Trunked Radio Systems
6.1.4 Timing
18
MX429A
Timing see Figure 9
Min.
Typ.
Max.
Units
(t
ACS
)
Access Time
135
ns
(t
)
Address Hold Time
Address Set-up Time
Data Hold Time (Write)
0
0
ns
ns
ns
ns
ns
ns
AH
(t
)
AS
(t
DHW
)
)
85
0
(t
DS
)
Data Set-up Time (Write)
Output Hold Time (Read)
Strobe Time
(t
OHR
15
140
105
(t
)
ST
A0 A1 A2
STROBE
tAS
tAH
tOHR
tST
DATA OUT (READ)
DATA IN (WRITE)
VALID DATA
tDS
tACS
tDHW
VALID DATA
tACS - Access Time
tAS - Address Set-Up Time
tDS - Data Set-Up Time
tAH - Address Hold Time
tDHW - Data Hold Time (Write)
tOHR - Output Hold Time (Read)
tST - Strobe Time
Figure 9: Timing Diagram
6.2 Packaging
A
Package Tolerances
DIM.
MIN.
TYP.
MAX.
A
B
C
E
1.240 (31.50)
0.514 (13.06)
0.165 (4.19)
0.600 (15.23)
1.260 (32.00)
0.583 (14.79)
0.230 (5.84)
0.670 (17.00)
0.615 (15.61)
E
B
E1
E1 0.594 (15.09)
F
H
J
J1
K
1.100 (27.94)
0.02 (0.51)
T
PIN1
K
0.018 (0.46)
0.055 (1.39)
0.050 (1.27)
0.080 (2.03)
0.080 (2.03)
0.200 (5.08)
C
K1
K1 0.074 (1.88)
H
L
L
P
T
0.115 (2.92)
0.10 (2.54)
0.0094 (0.239)
0.0106 (0.269)
P
J1
J
NOTE : All dimensions in inches (mm.)
Angles are in degrees
F
Figure 10: 24-pin CDIP Mechanical Outline: order as part no. MX429AJ
© 1998 MX-COM Inc.
www.mxcom.com Tel: 800 638-5577 336 744-5050 Fax: 336 744-5054
Doc. # 20480128.007
4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA
All trademarks and service marks are held by their respective companies.
CMLMICRO [ CML MICROCIRCUITS ]
