M74HC688B1R STMicroelectronics, M74HC688B1R Datasheet - Page 2

• Manufacturer Part Number: M74HC688B1R
• Description: IC COMPARATOR EQUALITY 8B 20DIP
• Manufacturer: STMicroelectronics
• Series: 74HCr
• Type: Equality Comparatorr

Specifications of M74HC688B1R

• Number Of Bits: 8
• Delay Time - Propagation: 17ns
• Current - Supply: 4µA
• Voltage - Supply: 2 V ~ 6 V
• Operating Temperature: -55°C ~ 125°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Circuit Type: Silicon Gate
• Current, Supply: 80 μA
• Function Type: 8-Bits
• Logic Function: Equality Comparator
• Logic Type: CMOS
• Package Type: DIP-20
• Special Features: High Speed
• Temperature, Operating, Range: -55 to +125 °C
• Voltage, Supply: 2 to 6 V
• Logic Family: HC
• Technology: CMOS
• High Level Output Current: -5.2mA
• Low Level Output Current: 5.2mA
• Output Function: A=B
• Quiescent Current: 4uA
• Mounting: Through Hole
• Pin Count: 20
• Polarity: Inverting
• Abs. Propagation Delay Time: 255ns
• Operating Supply Voltage (typ): 2.5/3.3/5V
• Operating Supply Voltage (max): 6V
• Operating Supply Voltage (min): 2V
• Operating Temperature (max): 125C
• Operating Temperature (min): -55
• Operating Temperature Classification: Military
• No. Of Channels: 8
• Supply Voltage Range: 2V To 6V
• Logic Case Style: DIP
• No. Of Pins: 20
• Operating Temperature Range: -55°C To +125°C
• Response Time: 7ns
• Filter Terminals: Through Hole
• Rohs Compliant: Yes
• Ic Generic Number: 74HC688
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-7389-5; M74HC688B1R

M74HC688
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
X: Don’t Care
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
2/9
P <> Q
P = Q
P, Q
X
INPUTS
G
H
L
L
PIN DESCRIPTION
2, 4, 6, 8, 11,
3, 5, 7, 9, 12,
13, 15, 17
14, 16, 18
PIN No
19
10
20
1
SYMBOL
Q0 to Q7
P0 to P7
P = Q
GND
V
G
CC
Enable Input (Active
LOW)
Word Inputs
Word Outputs
Equal to Output
Ground (0V)
Positive Supply Voltage
NAME AND FUNCTION
OUTPUT
P = Q
H
H
L