74LV688D View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
74LV688D Datasheet PDF : 12 Pages
| |||
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
1
E
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
Share Link: 