M74HC251B1R STMicroelectronics, M74HC251B1R Datasheet - Page 2

• Manufacturer Part Number: M74HC251B1R
• Description: IC MULTIPLEXER 8CHANNEL 16-DIP
• Manufacturer: STMicroelectronics
• Series: 74HCr
• Type: Multiplexerr

Specifications of M74HC251B1R

• Circuit: 1 x 8:1
• Independent Circuits: 1
• Current - Output High, Low: 5.2mA, 5.2mA
• Voltage Supply Source: Single Supply
• Voltage - Supply: 2 V ~ 6 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: 16-DIP (0.300", 7.62mm)
• Product: Decoders, Encoders, Multiplexers & Demultiplexers
• Logic Family: 74HC
• Number Of Lines (input / Output): 3.0 / 2.0
• Propagation Delay Time: 130 ns at 2 V, 26 ns at 4.5 V, 22 ns at 6 V
• Supply Voltage (max): 6 V
• Supply Voltage (min): 2 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: Through Hole
• Number Of Input Lines: 3.0
• Number Of Output Lines: 2.0
• Power Dissipation: 500 mW
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1807-5

M74HC251
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
X : Don’t Care
Z : High Impedance
2/11
C
H
H
H
H
X
L
L
L
L
B
H
H
H
H
X
L
L
L
L
INPUTS
A
H
H
H
H
X
L
L
L
L
PIN DESCRIPTION
4, 3, 2, 1, 15,
14, 13, 12
STROBE
11, 10, 9
PIN No
16
H
S
5
6
7
8
L
L
L
L
L
L
L
L
SYMBOL
STROBE
D0 to D7
A, B, C
GND
Vcc
W
Y
D0
D1
D2
D3
D4
D5
D6
D7
Y
Z
Multiplexer Inputs
Multiplexer Output
Complementary Multi-
plexer Output
3 State Output Enable
Input
Select Inputs
Ground (0V)
Positive Supply Voltage
NAME AND FUNCTION
OUTPUTS
D0
D1
D2
D3
D4
D5
D6
D7
W
Z