N74F85N,602 NXP Semiconductors, N74F85N,602 Datasheet - Page 4
![IC COMPARATOR MAGNITUDE 4B 16DIP](/photos/6/52/65287/568-16-dip_sot38-4_sml.jpg)
N74F85N,602
Manufacturer Part Number
N74F85N,602
Description
IC COMPARATOR MAGNITUDE 4B 16DIP
Manufacturer
NXP Semiconductors
Series
74Fr
Type
Magnitude Comparatorr
Datasheet
1.N74F85N602.pdf
(10 pages)
Specifications of N74F85N,602
Number Of Bits
4
Delay Time - Propagation
9.5ns
Current - Supply
40mA
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
16-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
568-1735-5
933740020602
N74F85N
933740020602
N74F85N
Philips Semiconductors
APPLICATION
September 27, 1994
4-bit magnitude comparator
INPUTS
(LSB)
(LSB)
B23
A23
B22
A22
B21
A21
B20
A20
B19
A19
B18
A18
B17
A17
B16
A16
B15
A15
B14
A14
B13
A13
B12
A12
B11
A11
B10
A10
B9
A9
B8
A8
B7
A7
B6
A6
B5
A5
B4
A4
B3
A3
B2
A2
B1
A1
B0
A0
Figure 1. Comparison of Two 24-Bit Words
H
L
L
L
L
L
L
B3
A3
B2
A2
B1
A1
B0
A0
I
I
I
B3
A3
B2
A2
B1
A1
B0
A0
I
I
I
B3
A3
B2
A2
B1
A1
B0
A0
I
I
I
B3
A3
B2
A2
B1
A1
B0
A0
I
I
I
B3
A3
B2
A2
B1
A1
B0
A0
I
I
I
A<B
A=B
A>B
A<B
A=B
A>B
A<B
A=B
A>B
A<B
A=B
A>B
A<B
A=B
A>B
A<B
A=B
A>B
A<B
A=B
A>B
A<B
A=B
A>B
A<B
A=B
A>B
A<B
A=B
A>B
NC
NC
NC
NC
B3
A3
B2
A2
B1
A1
B0
A0
A<B
A=B
A>B
A<B
A=B
A>B
OUTPUTS
SF00079
4
The parallel expansion scheme shown in Figure 1 demonstrates the
most efficient general use of these comparators. The expansion
inputs can be used as a fifth input bit position except on the least
significant device, which must be connected as in the serial scheme.
The expansion inputs used by labeling I
a “B” input and setting I
comparator only when the outputs are used to drive the (A0–A3) and
(B0–B3) inputs of another 74F85 device. The parallel technique can
be expanded to any number of bits as shown in Table 1.
Table 1.
WORD LENGTH
25–120 bits
5–24 bits
1–4 bits
A=B
NUMBER OF
= Low. The 74F85 can be used as a 5-bit
PACKAGES
8–31
2–6
1
A>B
as an “A” input, I
TYPICAL SPEEDS
Product specification
74F85
12ns
22ns
34ns
74F
A<B
as