mc10166 ON Semiconductor, mc10166 Datasheet - Page 4

• Manufacturer Part Number: mc10166
• Description: 5?bit Magnitude Comparator
• Manufacturer: ON Semiconductor

FIGURE 2 — 25−BIT MAGNITUDE COMPARATOR
A24
A23
A22
A21
A20
A19
A18
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
B24
B23
B22
B21
B20
B19
B18
B17
B16
B15
B14
B13
B12
B11
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
B4
A4
B3
A3
B2
A2
B1
A1
B0
A0
B4
A4
B3
A3
B2
A2
B1
A1
B0
A0
B4
A4
B3
A3
B2
A2
B1
A1
B0
A0
B4
A4
B3
A3
B2
A2
B1
A1
B0
A0
B4
A4
B3
A3
B2
A2
B1
A1
B0
A0
A < B
A > B
A < B
A > B
A < B
A > B
A < B
A > B
A < B
A > B
B4
A4
B3
A3
B2
A2
B1
A1
B0
A0
APPLICATION INFORMATION
A < B
A > B
http://onsemi.com
A0 B0 A1 B1 A2 B2 A3 B3 A4 B4
A0
B0
A1
A > B
4
B1
MC10166
A2
words. Two outputs are provided which give a high lev-
el for A > B and A < B. The A = B function can be ob-
tained by wire−ORing these outputs (a low level indi-
cates A = B) or by NORing the outputs (a high level indi-
cates A = B).
ally expanded or cascaded. Figure 1 shows two devices
in a serial expansion for a 9−bit word length. The A >
B and A < B outputs are fed to the A0 and B0 inputs re-
spectively of the next device. The connection for an A
= B output is also shown. The worst case delay time of
serial expansion is equal to the number of comparators
times the data−to−output delay.
pansion, devices can be cascaded. Figure 2 shows a
25−bit cascaded comparator whose worst case delay is
two data−to−output delays. The cascaded scheme can
be extended to longer word lengths.
A = B
A < B
A > B
B2
The MC10166 compares the magnitude of two 5−bit
For longer word lengths, the MC10166 can be seri-
For shorter delay times than possible with serial ex-
A3
A < B
FIGURE 1 — 9−BIT MAGNITUDE
B3
A4
B4
COMPARATOR
A0
B0
A5 B5 A6 B6 A7 B7 A8 B8
A1
A > B
B1
A>B
A2
For 9−Bit Word
MC10166
B2
A<B
A3
A < B
B3
A = B
A4
B4