74HC688D NXP Semiconductors, 74HC688D Datasheet - Page 2

• Manufacturer Part Number: 74HC688D
• Description: IC, 74HC CMOS, SMD, 74HC688, SOIC20
• Manufacturer: NXP Semiconductors

Specifications of 74HC688D

• Comparator Type: Magnitude
• No. Of Channels: 8
• Supply Voltage Range: 2V To 6V
• Logic Case Style: SOIC
• No. Of Pins: 20
• Operating Temperature Range: -40°C To +125°C
• Svhc: No SVHC (18-Jun-2010)
• Package: RoHS Compliant
• Base Number: 74
• Rohs Compliant: Yes

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
GND = 0 V; T
Notes
1. C
2. For HC the condition is V
ORDERING INFORMATION
See
December 1990
SYMBOL
t
C
C
PHL/
Compare two 8-bit words
Output capability: standard
I
8-bit magnitude comparator
I
PD
CC
f
f
C
V
For HCT the condition is V
i
o
“74HC/HCT/HCU/HCMOS Logic Package Information”
CC
PD
= input frequency in MHz
L
category: MSI
t
= output frequency in MHz
(C
PLH
= output load capacitance in pF
P
= supply voltage in V
is used to determine the dynamic power dissipation (P
L
D
= C
V
amb
CC
PD
PARAMETER
propagation delay
input capacitance
power dissipation capacitance per package
2
P
E to P = Q
= 25 C; t
n
, Q
V
f
o
CC
) = sum of outputs
n
2
to P = Q
f
r
i
= t
I
I
f
= GND to V
= GND to V
= 6 ns
(C
L
V
CC
2
CC
CC
f
o
)
1.5 V
where:
2
.
CONDITIONS
C
notes 1 and 2
GENERAL DESCRIPTION
The 74HC/HCT688 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT688 are 8-bit magnitude comparators.
They perform comparison of two 8-bit binary or BCD
words.
The output provides P = Q.
L
D
= 15 pF; V
in W):
CC
= 5 V
HC
17
8
3.5
30
TYPICAL
74HC/HCT688
Product specification
12
HCT
17
3.5
30
UNIT
ns
ns
pF
pF