MC10H645 Datasheet, PDF (1/5 Pages) ON Semiconductor – 1:9 TTL CLOCK DRIVER

MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
1:9 TTL Clock Driver
The MC10H645 is a single supply, low skew, TTL I/O 1:9 Clock Driver.
Devices in the Motorola H600 clock driver family utiize the 28–lead PLCC
for optimal power and signal pin placement.
The device features a 24mA TTL ouput stage with AC performance
specified into a 50pF load capacitance. A 2:1 input mux is provided on
chip to allow for distributing both system and diagnostic clock signals or
designing clock redundancy into a system. With the SEL input held LOW
the DO input will be selected, while the D1 input is selected when the SEL
input is forced HIGH.
MC10H645
1:9 TTL
CLOCK DRIVER
• Low Skew Typically 0.65ns Within Device
• Guaranteed Skew Spec 1.25ns Part–to–Part
• Input Clock Muxing
• Differential ECL Internal Design
• Single Supply
• Extra TTL and ECL Power/Ground Pins
PIN NAMES
PIN
GT
VT
VE
GE
Dn
Q0 – Q8
SEL
TTL
Inputs
D0
D1
SEL
FUNCTION
TTL Ground (0V)
TTL VCC (+5.0V)
ECL VCC (+5.0V)
ECL Ground (0V)
TTL Signal Input
TTL Signal Outputs
TTL Mux Select
LOGIC DIAGRAM
TTL Outputs
Q0
MUX
Q1
D0
D0
Q
Q2
D1
Q
D1
Q3
SS
Q4
Q5
Q6
Q7
Q8
FN SUFFIX
PLASTIC PACKAGE
CASE 776–02
Pinout: 28–Lead PLCC (Top View)
GT Q6 VT Q7 VT Q8 GT
25 24 23 22 21 20 19
GT 26
18 NC
Q5 27
17 D0
VT 28
16 D1
Q4 ₁
VT 2
15 VE
14 SEL
Q3 3
13 GE
GT 4
12 NC
5 6 7 8 9 10 11
GT Q2 VT Q1 VT Q0 GT
9/96
© Motorola, Inc. 1996
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