Document Outline
- FEATURES
- PIN CONFIGURATION
- APPLICATIONS
- ORDERING INFORMATION
- EQUIVALENT SCHEMATIC
- BLOCK DIAGRAM
- LOGIC FUNCTIONS
- ABSOLUTE MAXIMUM RATINGS
- DC ELECTRICAL CHARACTERISTICS
- AC ELECTRICAL CHARACTERISTICS
- TYPICAL PERFORMANCE CHARACTERISTICS
- PACKAGE
Philips
Semiconductors
NE521
High-speed dual-differential
comparator/sense amp
Product data
Supersedes data of 1994 Aug 31
File under Integrated Circuits, IC11 Handbook
2001 Aug 03
INTEGRATED CIRCUITS
Philips Semiconductors
Product data
NE521
High-speed dual-differential comparator/sense amp
2
2001 Aug 03
853-0900 26834
FEATURES
12 ns maximum guaranteed propagation delay
20
A maximum input bias current
TTL compatible strobes and outputs
Large common-mode input voltage range
Operates from standard supply voltages
APPLICATIONS
MOS memory sense amp
A-to-D conversion
High-speed line receiver
PIN CONFIGURATION
1
2
3
4
5
6
7
8
14
13
12
11
10
9
D, N Packages
INPUT 1A
INPUT 1B
NC
OUTPUT 1Y
STROBE 1G
STROBE S
GND
V+
V
INPUT 2A
INPUT 2B
NC
OUTPUT 2Y
STROBE 2G
TOP VIEW
SL00242
Figure 1. Pin Configuration
ORDERING INFORMATION
DESCRIPTION
TEMPERATURE RANGE
ORDER CODE
DWG #
14-Pin Plastic Dual In-Line Package (DIP)
0
C to +70
C
NE521N
SOT27-1
14-Pin SO Package
0
C to +70
C
NE521D
SOT108-1
EQUIVALENT SCHEMATIC
Q11
V+
14
2
+
1
V
13
R2
R1
Q2
Q1
Q4
Q3
D7
Q9
R4
Q10
Q8
R5
R3
D6
R17
Q6
R16
Q5
Q13
R15
R6
R9
Q19
Q7
R14
5
D2
Q25
R20
6
R21
Q26
Q30
R24
R23
Q27
Q29
Q28
R25
7
12
+
11
V+
R8
Q16
Q15
Q14
R12
R11
Q18
R10
Q17
D4
Q20
Q21
R7
D5
Q22
Q23
R18
R19
D3
8
Q24
Q31
R26
Q32
R27
R28
Q36
R29
R30
Q32
Q35
9
Q34
R34
R22
4
SL00243
Figure 2. Equivalent Schematic
Philips Semiconductors
Product data
NE521
High-speed dual-differential comparator/sense amp
2001 Aug 03
3
BLOCK DIAGRAM
(12)
INPUT 2A
(11)
INPUT 2B
(9)
OUTPUT 3Y
(8)
STROBE 2G
(1)
(2)
(4)
(5)
INPUT 1A
INPUT 1B
OUTPUT 1Y
STROBE 1G
(6)
STROBE S
SL00244
Figure 3. Block Diagram
LOGIC FUNCTIONS
V
ID
A
+
, B
STROBE S
STROBE G
OUTPUT (Y)
V
ID
V
OS
H
H
L
V
OS
< V
ID
< V
OS
H
H
Undefined
V
ID
V
OS
H
H
H
X
L
X
H
X
X
L
H
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNIT
Supply voltage
V+
Positive
+7
V
V
Negative
-7
V
V
IDR
Differential input voltage
6
V
V
IN
Input voltage
Common mode
5
V
Strobe/gate
+5.25
V
P
D
Maximum power dissipation
1
T
amb
= 25
C (still-air)
N package
1420
mW
D package
1040
mW
T
amb
Operating temperature range
0 to 70
C
T
stg
Storage temperature range
65 to +150
C
T
sld
Lead soldering temperature (10 sec. max)
+230
C
NOTES:
1. Derate above 25
C at the following rates:
N package at 11.4 mW/
C
D package at 8.3 mW/
C
Philips Semiconductors
Product data
NE521
High-speed dual-differential comparator/sense amp
2001 Aug 03
4
DC ELECTRICAL CHARACTERISTICS
V+ = +5 V; V = 5 V, T
amb
= 0
C to +70
C, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
LIMITS
UNIT
SYMBOL
PARAMETER
TEST CONDITIONS
Min
Typ
Max
UNIT
V
OS
Input offset voltage
V+ = +4.75 V; V = 4.75 V
At 25
C
6
7.5
mV
Over temperature range
10
mV
I
BIAS
Input bias current
V+ = +5.25 V, V = 5.25 V
At 25
C
7.5
20
A
Over temperature range
40
A
I
OS
Input offset current
V+ = +5.25 V, V = 5.25 V
At 25
C
1.0
5
A
Over temperature range
12
A
V
CM
Common-mode voltage range
V+ = +4.75 V, V = 4.75 V
3
+3
V
Input current
V+ = +5.25 V, V = 5.25 V
I
IH
High
V
IH
= 2.7 V
1G or 2G strobe
50
A
Common strobe S
100
A
Input Current
I
IL
Low
V
IL
= 0.5 V
1G or 2G strobe
2.0
mA
Common strobe S
4.0
mA
Output voltage
V
I(S)
= 2.0 V
V
OH
High
V+ = +4.75 V; V = 4.75 V; I
LOAD
= 1 mA
2.7
3.4
V
V
OL
Low
V+ = +5.25 V; V = 5.25 V; I
LOAD
= 20 mA
0.5
V
Supply voltage
V+
Positive
4.75
5.0
5.25
V
V
Negative
4.75
5.0
5.25
V
Supply current
V+ = 5.25 V; V = 5.25 V; T
amb
= 25
C
I
CC+
Positive
27
35
mA
I
CC
Negative
15
28
I
SC
Short-circuit output current
-40
100
mA
AC ELECTRICAL CHARACTERISTICS
T
amb
= 25
C; R
L
= 280
; C
L
=15 pF; V+ = 5 V; V = 5 V
SYMBOL
PARAMETER
FROM INPUT
TO OUTPUT
LIMITS
UNIT
SYMBOL
PARAMETER
FROM INPUT
TO OUTPUT
Min
Typ
Max
UNIT
Large-signal switching speed
Propagation delay
t
PLH(D)
Low to high
1
Amp
Output
8
12
t
PHL(D)
High to low
1
Amp
Output
6
9
ns
t
PLH(S)
Low to high
2
Strobe
Output
4.5
10
t
PHL(S)
High to low
2
Strobe
Output
3.0
6
f
MAX
Max. operating frequency
40
55
MHz
NOTES:
1. Response time measured from 0 V point of
100 mV
P-P
10 MHz square wave to the 1.5 V point of the output.
2. Response time measured from 1.5 V point of input to 1.5 V point of the output.
Philips Semiconductors
Product data
NE521
High-speed dual-differential comparator/sense amp
2001 Aug 03
5
TYPICAL PERFORMANCE CHARACTERISTICS
20mV
5mV
10mV
Response Time for Various
Input Overdrives
Response Time for Various
Input Overdrives
Response Time vs Temperature
Propagation Delay for
Various Input Voltages
Propagation Delay for
Various Input Voltages
Output Voltage vs
Ambient Temperature
Input Bias Current vs
Ambient Temperature
Input Offset Current vs
Ambient Temperature
4
3
2
1
0
100
50
0
0
5
10
15
20
25
30
VS = +5V
Tamb = 25
o
C
100mV
TIME -- nS
INPUT VOL
T
AGE
(mV)
OUTPUT VOL
T
AGE
(V)
Tamb = 25
o
C
VS = +5V
5mV
10mV
100mV
50mV
0
5
10
15
20
25
30
TIME -- nS
INPUT VOL
T
AGE
(mV)
OUTPUT VOL
T
AGE
(V)
4
3
2
1
0
100
50
0
12
10
8
6
4
2
60
20
20
+60
+100
+140
TPD (LH)
TPD (HL)
AMBIENT TEMPERATURE (
o
C)
TESPONSE TIME (ns)
INPUT VOLTAGE (mVpp)
PROP
AGA
TION DELA
Y
(ns)
VS = +5V
10MHz SQUARE
WAVE INPUT
Tamb = 25
o
C
TPD (LH)
TPD (HL)
10
20
30
40
50
60
70
12
10
8
6
20
18
16
14
12
10
8
6
4
2
100
1000
INPUT VOLTAGE (m Vpp)
PROP
AGA
TION DELA
Y
(ns)
VS = +5V
10MHz SQUARE
WAVE INPUT
Tamb = 25
o
C
TPD (LH)
TPD (HL)
4.0
3.0
2.0
1.0
75
25
+25
+75
+125
VOL
VOH
AMBIENT TEMPERATURE (
o
C)
OUTPUT VOL
T
AGE
(V)
75
25
+25
+75
+125
AMBIENT TEMPERATURE
(
o
C)
12
11
10
9
8
7
6
INPT BIAS CURRENT (
A)
1.1
1.0
0.9
0.8
0.7
0.6
0.5
75
25
+25
+75
+125
AMBIENT TEMPERATURES (
o
C)
INPUT OFSET CURRENT (
A)
SL00245
Figure 4. Typical Performance Characteristics
Philips Semiconductors
Product data
NE521
High-speed dual-differential comparator/sense amp
2001 Aug 03
6
DIP14:
plastic dual in-line package; 14 leads (300 mil)
SOT27-1
Philips Semiconductors
Product data
NE521
High-speed dual-differential comparator/sense amp
2001 Aug 03
7
SO14:
plastic small outline package; 14 leads; body width 3.9 mm
SOT108-1
Philips Semiconductors
Product data
NE521
High-speed dual-differential comparator/sense amp
2001 Aug 03
8
Definitions
Short-form specification -- The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition -- Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information -- Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support -- These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes -- Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard
cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless
otherwise specified.
Contact information
For additional information please visit
http://www.semiconductors.philips.com.
Fax: +31 40 27 24825
For sales offices addresses send e-mail to:
sales.addresses@www.semiconductors.philips.com.
Koninklijke Philips Electronics N.V. 2001
All rights reserved. Printed in U.S.A.
Date of release: 05-01
Document order number:
9397 750 09192
Philips
Semiconductors
Data sheet status
[1]
Objective data
Preliminary data
Product data
Product
status
[2]
Development
Qualification
Production
Definitions
This data sheet contains data from the objective specification for product development.
Philips Semiconductors reserves the right to change the specification in any manner without notice.
This data sheet contains data from the preliminary specification. Supplementary data will be
published at a later date. Philips Semiconductors reserves the right to change the specification
without notice, in order to improve the design and supply the best possible product.
This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply.
Changes will be communicated according to the Customer Product/Process Change Notification
(CPCN) procedure SNW-SQ-650A.
Data sheet status
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL
http://www.semiconductors.philips.com.
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