MK50H28N ST Microelectronics, Inc., MK50H28N Datasheet - Page 53

• Manufacturer Part Number: MK50H28N
• Description: Multi Logical Link Frame Relay Controller
• Manufacturer: ST Microelectronics, Inc.

Figure 9a: TTL Output Load Diagram
Figure 10: MK50H28 Serial Link Timing Diagram
FROM
OUTPUT
UNDER
TEST
NOTE: This load is used on all outputs except INTR, HOLD, READY.
RCLK
TCLK
RD
TD
C
OUTPUT
INPUT
FLOAT
L
TIMING MEASUREMENTS ARE MADE AT THE FOLLOWING VOLTAGES,
UNLESS OTHERWISE SPECIFIED:
POINT
TEST
0.4 mA
12
CR 1
2.0 V
2.0 V
10 %
"1"
Vcc
CR
CR
CR
R1 = 1.2K
CR1 - CR4 = 1N914 or EQUIV
2
3
4
19
Figure 9b: Open Drain Output Load Diagram
O.8 V
O.8 V
90 %
8
"0"
15
C = 50pF min @ 1 MHz
L
10
16
21
13
6
18
11
20
NOTE: This load is used on open
drain outputs INTR, HOLD, READY.
FROM
OUTPUT
UNDER
TEST
14
7
9
17
Vcc
R1 = 1.4K
MK50H28
C
L
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