M74HC85B1R STMicroelectronics, M74HC85B1R Datasheet - Page 2

• Manufacturer Part Number: M74HC85B1R
• Description: IC COMPARATOR MAGNITUDE 4B 16DIP
• Manufacturer: STMicroelectronics
• Series: 74HCr
• Type: Magnitude Comparatorr

Specifications of M74HC85B1R

• Number Of Bits: 4
• Delay Time - Propagation: 20ns
• Current - Supply: 4µA
• Voltage - Supply: 2 V ~ 6 V
• Operating Temperature: -55°C ~ 125°C
• Package / Case: 16-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1887-5

M74HC85
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
X : Don’t Care
2/10
A3 > B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 = B3
A3 < B3
A2 > B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 = B2
A2 < B2
COMPARING INPUTS
X
X
A1 = B1
A1 > B1
A1 = B1
A1 = B1
A1 > B1
X
X
X
X
A0 > B0
A0 = B0
A0 < B0
X
X
X
X
X
X
PIN DESCRIPTION
9, 11, 14, 1
10, 12, 13,
PIN No
15
16
2
3
4
5
6
7
8
CASCADING INPUTS
A>B
X
X
X
X
X
H
H
X
X
X
X
L
L
A<B
SYMBOL
X
X
X
X
X
H
H
X
X
X
X
OUT
OUT
OUT
L
L
B
A
IN
IN
IN
0
0
GND
Vcc
to B
to A
A<B
A=B
A>B
A>B
A=B
A<B
A=B
3
3
X
X
X
X
H
X
X
X
X
L
L
L
L
A<B Expansion Input
A=B Expansion Input
A>B Expansion Input
A>B Expansion Output
A=B Expansion Output
A<B Expansion Output
Word B Inputs
Word A Inputs
Ground (0V)
Positive Supply Voltage
NAME AND FUNCTION
A>B
H
H
H
H
H
H
L
L
L
L
L
L
L
OUTPUTS
A<B
H
H
H
H
H
H
L
L
L
L
L
L
L
A=B
H
L
L
L
L
L
L
L
L
L
L
L
L