IMP16C552-CJ68 IMP Inc, IMP16C552-CJ68 Datasheet - Page 23

• Manufacturer Part Number: IMP16C552-CJ68
• Description: Dual Universal Asynchronous Receiver/Transmitter (UART) with 16-BYTE FIFO & Parallel Printer Port
• Manufacturer: IMP Inc

23
CAPACITANCE
TA=25
Symbol
CXIN
CXOUT
CIN
COUT
Symbol
txh
txl
tMR
Note 1 : Input drive levels are 0.4v (low) and 2.4 (high) for AC tests.
Note 2 : Output compare levels are 0.8v (low) and 2.0v (high) for AC lests.
0
C, VCC=VSS=0V
0.4V
2.4V
Parameter
Duration of External
Clock High Pulse
Duration of External
Clock Low Pulse
Master Reset Pulse Width
MR
Parameter
Clock
Capacitance
Clock
Capacitance
Input Capacitance
Output Capacitance
External Clock Input(8.0 MHz Max.)
t
XH
t
XL
FIGURE 4 – Clock and Reset Timing
Output
Input
408-432-9100/www.impweb.com
2.0V
Conditions
Fc =1 MHz
Unmeasured pins
Returned to VSS
0.8V
Reset Timing
t
MR
0.4V
Note:1
2.4V
Min
55
55
5. 0
Max
AC Test Points
IMP16C552
Min
IMP16C552
Units
nsec
nsec
nsec
Typ
15
20
6
10
Test Conditions
External Clock
(8. 0 MHz Max)
1TTL Load
(8. 0 MHz Max)
1TTL Load
Max
20
30
10
20
2.0V
0.8V
Note:2
Units
pF
pF
pF
pF
© 2002 IMP, Inc.