74LV688 PDF даташит
Спецификация 74LV688 изготовлена «Philips» и имеет функцию, называемую «8-bit magnitude comparator». |
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Детали детали
Номер произв | 74LV688 |
Описание | 8-bit magnitude comparator |
Производители | Philips |
логотип |
12 Pages
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INTEGRATED CIRCUITS
74LV688
8-bit magnitude comparator
Product specification
Supersedes data of 1997 May 15
IC24 Data Handbook
1998 Jun 23
Philips
Semiconductors
No Preview Available ! |
Philips Semiconductors
8-bit magnitude comparator
Product specification
74LV688
FEATURES
• Wide operating voltage: 1.0 to 5.5V
• Optimized for low voltage applications: 1.0V to 3.6V
• Accepts TTL input levels between VCC = 2.7V and VCC = 3.6V
• Typical VOLP (output ground bounce) < 0.8V at VCC = 3.3V,
Tamb = 25°C
• Typical VOHV (output VOH undershoot) > 2V at VCC = 3.3V,
Tamb = 25°C
• Compare two 8-bit words
• Output capability: standard
• ICC category: MSI
DESCRIPTION
The 74LV688 is a high-speed Si-gate CMOS device, pin compatible
with the 74HC/HCT688
The 74LV688 is an 8-bit magnitude comparator. It performs
comparisons of two 8-bit binary or BCD words. The output provides
P = Q (equal-to).
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
tPHL/tPLH
Propagation delay Pn, Qn to P=Q
CL = 15pF
VCC = 3.3V
CI Input capacitance
CPD Power dissipation capacitance per gate VI = GND to VCC1
NOTE:
1. CPD is used to determine the dynamic power dissipation (PD in mW):
PD = CPD × VCC2 × fi + S (CL × VCC2 × fo) where:
fi = input frequency in MHz; CL = output load capacity in pF;
fo = output frequency in MHz; VCC = supply voltage in V;
S (CL × VCC2 × fo) = sum of outputs.
TYPICAL
17
3.5
22
UNIT
ns
pF
pF
ORDERING INFORMATION
PACKAGES
20-Pin Plastic DIL
20-Pin Plastic SO
20-Pin Plastic SSOP Type II
20-Pin Plastic TSSOP Type I
TEMPERATURE RANGE OUTSIDE NORTH AMERICA
–40°C to +125°C
74LV688 N
–40°C to +125°C
74LV688 D
–40°C to +125°C
74LV688 DB
–40°C to +125°C
74LV688 PW
NORTH AMERICA
74LV688 N
74LV688 D
74LV688 DB
74LV688PW DH
PKG. DWG. #
SOT146-1
SOT163-1
SOT339-1
SOT360-1
PIN CONFIGURATION
E1
P0 2
Q0 3
P1 4
Q1 5
P2 6
Q2 7
P3 8
Q3 9
GND 10
20 VCC
19 P = Q
18 Q7
17 P7
16 Q6
15 P6
14 Q5
13 P5
12 Q4
11 P4
SY00054
PIN DESCRIPTION
PIN NO.
SYMBOL
1E
2, 4, 6, 8, 11,
13, 15, 17
P0 to P7
3, 5, 7, 9, 12,
14, 16, 18
Q0 to Q7
10 GND
19 P=Q
20 VCC
FUNCTION
Enable input (active LOW)
Word inputs
Word inputs
Ground (0V)
Equal to output
Positive Supply Voltage
1998 Jun 23
2 853-1878 19618
No Preview Available ! |
Philips Semiconductors
8-bit magnitude comparator
LOGIC SYMBOL
2
4
6
8
11
13
15
17
3
5
7
9
12
14
16
18
P0
P1
P2
P3
P4
P5
P6
P7
P=Q
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7 E
19
1
SY00055
LOGIC SYMBOL (IEEE/IEC)
1 G1
20
4
6
8
P
11
13
15
17 7
(P = Q) 1
19
30
5
7
9
Q
12
14
16
18 7
SY00056
Product specification
74LV688
LOGIC DIAGRAM
P7
Q7
P6
Q6
P5
Q5
P4
Q4
P3
Q3
P2
Q2
P1
Q1
P0
Q0
E
FUNCTION TABLE
INPUTS
DATA
Pn, Qn
ENABLE
E
P=Q
L
XH
P>Q
L
P<Q
L
NOTES:
H = HIGH voltage level
L = LOW voltage level
X = Don’t care
P=Q
SY00057
OUTPUT
P=Q
L
H
H
H
1998 Jun 23
3
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