GTL2000
22-bit GTL Processor Voltage Clamp
Product specification 1999 Apr 05
INTEGRATED CIRCUITS
Philips Semiconductors Product specification
GTL200022-bit GTL Processor Voltage Clamp
2
1999 Apr 05 853-2154 21178
FEA TURES
•Direct interface with TTL level
•6.5Ω ON-state connection between port S
n
and D
n
DESCRIPTION
The GTL2000 provides twenty-two bits of high-speed voltage
clamps. The low ON-state resistance of the clamp allows
connections to be made with minimal propagation delay.
The device is organized as one 22-bit voltage clamp. When S or D
is low the clamp is in the ON–state and a low resistance connection
exists between the S and D ports. When S port and D port are high,
the clamp is in the OFF-state and a very high impedance exists
between the S and D ports. When the D port is high, the voltage on
the S port is clamped to the applied reference voltage on the GREF
port.
PIN CONFIGURATION
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
21
22
23
24
41
42
43
44
45
46
47
48
S
REF
S
1
S
2
S
3
S
4
S
5
S
6
S
7
S
8
S
9
S
10
S
11
S
12
S
13
S
14
S
15
S
16
S
17
S
18
S
19
S
20
S
21
S
22
G
REF
D
REF
GND
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
D
10
D
11
D
12
D
13
D
14
D
15
D
16
D
17
D
18
D
19
D
20
D
21
D
22
SA00521
QUICK REFERENCE DA TA
SYMBOL PARAMETER
CONDITIONS
T
amb
= 25°C; GND = 0V
TYPICAL UNIT
t
PLH
Propagation delay
Sn to Dn
V
DD1
= 3.3V; V
DD2
= 2.5V;
V
REF
= 1.5V; unloaded
1.5 ns
C
OFF
Channel capacitance (OFF-state) VS = 1.5V 7.5 pF
ORDERING INFORMATION
PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER
48-Pin Plastic SSOP Type II 0°C to +85°C GTL2000 DB GTL2000 DB SOT370–1
Philips Semiconductors Product specification
GTL2000
22-bit GTL Processor Voltage Clamp
1999 Apr 05
3
PIN DESCRIPTION
PIN NUMBER SYMBOL NAME AND FUNCTION
1 GND Ground (0V)
2 S
REF
Source of reference
transistor
3 – 24 S
n
Port S1 to Port S
22
25 – 46 D
n
Port D1 to Port D
22
47 D
REF
Drain of reference
transistor
48 G
REF
Gate of reference
transistor
FUNCTION TABLE
S
N
D
N
L L
H H
H = High voltage level
L = Low voltage level
Z = High impedance “off” state
CLAMP SCHEMA TIC
SA00522
S
REF
S
1
S
22
D
REF
D
1
D
22
G
REF
ABSOLUTE MAXIMUM RA TINGS
1, 2, 3
SYMBOL
PARAMETER CONDITIONS RATING UNIT
V
S_REF
DC source reference voltage –0.5 to +7.0 V
V
D_REF
DC drain reference voltage –0.5 to +7.0 V
V
G_REF
DC gate reference voltage –0.5 to +7.0 V
V
Sn
DC voltage Port S
n
–0.5 to +7.0 V
V
Dn
DC voltage Port D
n
–0.5 to +7.0 V
I
REFK
DC reference diode current VI < 0 –50 mA
I
SK
DC diode current Port S
n
VI < 0 –50 mA
I
DK
DC diode current Port D
n
VI < 0 –50 mA
I
MAX
DC clamp current per channel Channel in ON-state ±35 mA
T
stg
Storage temperature range –65 to +150 °C
NOTE:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .
2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.
3. The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
Philips Semiconductors Product specification
GTL2000
22-bit GTL Processor Voltage Clamp
1999 Apr 05
4
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
CONDITIONS
Min Max
UNIT
V
S_REF
DC source reference voltage 1.0 4.4 V
V
D_REF
DC drain reference voltage V
S_REF
+ 0.6 5 V
V
G_REF
DC gate reference voltage V
S_REF
+ 0.6 5 V
V
Sn
DC voltage Port Sn (OFF-state) V
S_REF
5 V
V
Sn
DC voltage Port Sn (ON-state) 0 0.2 V
V
Dn
DC voltage Port Dn (OFF-state) V
S_REF
5 V
V
Dn
DC voltage Port Dn (ON-state) 0 0.4 V
I
S
Switch input leakage current
(OFF-state) for Sn and Dn I/O
VS , VD = 5V 15 µA
I
I
G
REF
input leakage current VG = 5V 2.5 µA
T
amb
Operating ambient temperature range In free air 0 +85 °C
DC CHARACTERISTICS for V
DD1
= 3.0 to 3.6V; V
DD2
= 2.36 to 2.64V; V
REF
= 1.365 to 1.635V range
Over recommended operating conditions. V oltage are referenced to GND (ground = 0V). Refer to the Test Circuit diagram.
LIMITS
SYMBOL PARAMETER TEST CONDITIONS T
amb
= 0°C to +85°C UNIT
Min Typ
1
Max
V
OL
LOW level output voltage VS = 0.175V; I
CLAMP
= 15.2mA 260 350 mV
NOTE:
1. All typical values are measured at V
DD1
= 3.3V, V
DD2
= 2.5V, V
REF
= 1.5V and T
amb
= 25 C
AC CHARACTERISTICS for V
DD1
= 3.0 to 3.6V; V
DD2
= 2.36 to 2.64V; V
REF
= 1.365 to 1.635V range
GND = 0V; tr = tf ≤ 3.0ns Refer to the Test Circuit diagram.
LIMITS
SYMBOL PARAMETER WAVEFORM T
amb
= 0 to +85°C UNIT
MIN TYP
1
MAX
t
PLH
2
Propagation delay
Sn to Dn; Dn to Sn
0.5 1.5 5.5 ns
NOTE:
1. All typical values are measured at V
DD1
= 3.3V, V
DD2
= 2.5V, V
REF
= 1.5V and T
amb
= 25 C
2. Propagation delay guaranteed by characterization
3. C
ON,MAX
of 30pF and a C
OFF ,MAX
of 15pF is guaranteed by design
Philips Semiconductors Product specification
GTL2000
22-bit GTL Processor Voltage Clamp
1999 Apr 05
5
AC WAVEFORMS
INPUT
t
PHL
t
PLH
V
M
V
M
V
M
V
M
OUTPUT
HIGH-to-LOW
LOW-to-HIGH
V
M
V
M
OUTPUT
HIGH-to-LOW
LOW-to-HIGH
V
I
GND
V
DD2
V
OL
V
DD2
V
OL
00
t
PHL
1
t
PLH
1
t
PHL
t
PLH
SA00524
Waveform 1. The Input (Sn) to Output (Dn) Propagation Delays
TEST CIRCUIT
V
REF
S
1
S
22
D
REF
D
1
D
22
G
REF
SA00523
PULSE
GENERATOR
DUT
S
REF
V
DD1
V
DD2
V
DD2
V
DD2
200K
Ω 150Ω 150Ω 150Ω
Waveform 2. Load circuit
Philips Semiconductors Product specification
GTL200022-bit GTL Processor Voltage Clamp
1999 Apr 05
6
SSOP48: plastic shrink small outline package; 48 leads; body width 7.5 mm SOT370-1
Philips Semiconductors Product specification
GTL200022-bit GTL Processor Voltage Clamp
1999 Apr 05
7
NOTES
Philips Semiconductors Product specification
GTL200022-bit GTL Processor Voltage Clamp
yyyy mmm dd
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 134). 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.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print code Date of release: 10-98
Document order number: 9397–750-05521
Data sheet
status
Objective
specification
Preliminary
specification
Product
specification
Product
status
Development
Qualification
Production
Definition
[1]
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
This data sheet contains preliminary data, and supplementary data will be published at a later date.
Philips Semiconductors reserves the right to make chages at any time without notice in order to
improve design and supply the best possible product.
This data sheet contains final specifications. Philips Semiconductors reserves the right to make
changes at any time without notice in order to improve design and supply the best possible product.
Data sheet status
[1] Please consult the most recently issued datasheet before initiating or completing a design.
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