Philips Switch CBT6800 User Manual

INTEGRATED CIRCUITS  
CBT6800  
10-bit bus switch with precharged outputs  
for live insertion  
Product data  
2003 Sep 12  
Supersedes data of 1999 Oct 28  
Philips  
Semiconductors  
 
Philips Semiconductors  
Product data  
10-bit bus switch with precharged outputs  
for live insertion  
CBT6800  
FEATURES  
DESCRIPTION  
5 switch connection between two ports  
TTL compatible input and output levels  
The CBT6800 provides ten bits of high-speed TTL-compatible bus  
switching. The low on-state resistance of the switch allows  
bi-directional connections to be made while adding near-zero  
propagation delay. The device also precharges the B port to a  
user-selectable bias voltage (BIASV) to minimize live-insertion noise.  
Outputs are precharged by bias voltage to minimize signal  
distortion during live insertion  
Latch-up protection exceeds 100 mA per JESD78  
The CBT6800 is organized as one 10-bit switch with a single enable  
(ON) input. When ON is low, the switch is on and port A is  
connected to port B. When ON is high, the switch between port A  
and port B is open and the B port is precharged to BIASV through  
the equivalent of a 10 kresistor.  
ESD protection exceeds 2000 V HBM per JESD22-A114,  
200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101  
The CBT6800 is characterized for operation from -40 to 85 °C.  
QUICK REFERENCE DATA  
CONDITIONS  
= 25 °C; GND = 0 V  
SYMBOL  
PARAMETER  
TYPICAL  
UNIT  
T
amb  
t
t
Propagation delay  
An to Bn or Bn to An  
PLH  
PHL  
C = 50 pF; V = 5 V  
250  
ps  
L
CC  
C
Input capacitance - control pin  
Output capacitance - I/O pins  
Total supply current  
V = 0 V or V  
CC  
3.5  
8.2  
1
pF  
pF  
µA  
IN  
I
C
I
Outputs disabled; V = 0 V or V  
OUT  
O
CC  
Outputs disabled; V =5.5 V  
CCZ  
CC  
ORDERING INFORMATION  
PACKAGES  
TEMPERATURE RANGE  
ORDER CODE  
DWG NUMBER  
24-Pin Plastic TSSOP  
-40 to +85 °C  
CBT6800PW  
SOT355-1  
PIN CONFIGURATION  
PIN DESCRIPTION  
PIN NUMBER  
SYMBOL  
OE  
NAME AND FUNCTION  
1
Output enable  
13  
BIASV  
Precharge bias voltage input  
A-port I/O pins  
OE  
A1  
1
2
24  
23  
Vcc  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
B8  
B9  
B10  
2, 3, 4, 5, 6,  
7, 8, 9, 10, 11  
A1-A10  
23, 22, 21, 20, 19,  
18, 17, 16, 15, 14  
3
A2  
A3  
22  
21  
20  
19  
B1-B10  
GND  
B-port I/O pins - with active pullup  
4
12  
24  
Ground (V)  
5
A4  
V
CC  
Positive supply voltage  
6
A5  
7
18  
17  
16  
15  
14  
A6  
8
A7  
9
A8  
10  
11  
12  
A9  
A10  
GND  
13 BIASV  
SA00505  
2
2003 Sep 12  
 
Philips Semiconductors  
Product data  
10-bit bus switch with precharged outputs  
for live insertion  
CBT6800  
LOGIC SYMBOL  
FUNCTION TABLE  
OE  
L
B1 - B10  
A1 - A10  
BIASV  
FUNCTION  
13  
BIASV  
Connect  
H
Precharge  
H
L
Z
= HIGH voltage level  
B1  
A1  
=
=
LOW voltage level  
HIGH impedance “off” state  
B10  
A10  
OE  
SA00536  
1, 2  
ABSOLUTE MAXIMUM RATINGS  
SYMBOL  
PARAMETER  
DC supply voltage  
CONDITIONS  
RATING  
-0.5 to +7.0  
-50  
UNIT  
V
V
CC  
I
IK  
DC input diode current  
mA  
V
3
V
I
DC input voltage  
-1.2 to +7.0  
-50  
I
DC clamp diode current  
Storage temperature range  
DC voltage range  
V
O
< 0  
mA  
°C  
V
SW  
T
stg  
-65 to 150  
-0.5 to 6.0  
BiasV  
NOTES:  
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 voltage ratings may be exceeded if the input and output current ratings are observed.  
RECOMMENDED OPERATING CONDITIONS  
LIMITS  
SYMBOL  
PARAMETER  
UNIT  
Min  
4.5  
1.3  
2.0  
Max  
V
CC  
DC supply voltage  
5.5  
V
V
BIASV  
DC supply voltage  
V
CC  
V
IH  
HIGH-level input voltage  
LOW-level Input voltage  
V
V
IL  
0.8  
+85  
V
T
amb  
Operating free-air temperature range  
-40  
°C  
3
2003 Sep 12  
 
Philips Semiconductors  
Product data  
10-bit bus switch with precharged outputs  
for live insertion  
CBT6800  
DC ELECTRICAL CHARACTERISTICS  
LIMITS  
T
amb  
= -40 to +85 °C  
SYMBOL  
PARAMETER  
TEST CONDITIONS  
UNIT  
1
Min  
Typ  
3.5  
8.2  
5
Max  
-1.2  
5
V
Input clamp voltage  
V
V
V
V
V
= 4.5 V; I = -18 mA  
V
IK  
CC  
CC  
CC  
CC  
CC  
I
I
Input leakage current - OE  
Output bias current  
= 5.5 V; V = GND or 5.5 V  
µA  
mA  
µA  
mA  
pF  
pF  
I
I
I
O
= 4.5 V; BiasV = 2.4 V; V = 0  
0.25  
O
I
Quiescent supply current  
= 5.5 V; I = 0, V = V or GND  
50  
2.5  
CC  
O
I
CC  
2
I  
CC  
Control pins  
= 5.5 V, one input at 3.4 V, other inputs at V or GND  
CC  
C
Control pins  
V = 3 V or 0  
I
I
C
Off-state capacitance - I/O pins  
V
V
V
V
V
= 3 V or 0; switch off  
O(OFF)  
O
= 4.5 V; V = 0 V; I = 64 mA  
7
CC  
CC  
CC  
I
I
3
r
= 4.5 V; V = 0 V; I = 30 mA  
5
7
On-resistance  
I
I
on  
= 4.5 V; V = 2.4 V; I = 15 mA  
10  
3.6  
15  
3.9  
I
I
VP  
Pass gate voltage  
= V = 5.0 V, I = -100 µA  
OUT  
3.4  
V
IN  
CC  
NOTES:  
1. All typical values are at V = 5 V, T  
2. This is the increase in supply current for each input that is at the specified TTL voltage level rather than V or GND  
= 25 °C  
amb  
CC  
CC  
3. Measured by the voltage drop between the A and the B terminals at the indicated current through the switch. On-state resistance is  
determined by the lowest voltage of the two (A or B) terminals.  
4
2003 Sep 12  
 
Philips Semiconductors  
Product data  
10-bit bus switch with precharged outputs  
for live insertion  
CBT6800  
AC CHARACTERISTICS  
GND = 0 V; C = 50 pF; t = t 2.5 ns  
L
r
f
LIMITS  
= +5.0 V 0.5 V  
FROM  
(INPUT)  
TO  
(OUTPUT)  
V
CC  
SYMBOL  
PARAMETER  
UNIT  
Min  
Max  
1
t
Propagation delay  
A or B  
ON  
B or A  
A or B  
.25  
ns  
ns  
pd  
t
BIASV = GND  
BIASV = 3 V  
2.4  
3.0  
7.7  
8.3  
PZH  
T
PZL  
t
T
BIASV = GND  
BIASV = 3 V  
1.0  
3.1  
5.3  
7.8  
PHZ  
PLZ  
ON  
A or B  
ns  
NOTE:  
1. This parameter is warranted but not production tested. The propagation delay is based on the RC time constant of the typical on-state  
resistance of the switch and a load capacitance of 50 pF, when driven by an ideal voltage source (zero output impedance).  
AC WAVEFORMS  
TEST CIRCUIT AND WAVEFORMS  
V
= 1.5 V, V = GND to 3.0 V  
M
IN  
7 V  
3 V  
0 V  
500  
S1  
From Output  
Under Test  
Open  
GND  
1.5V  
1.5V  
INPUT  
500 Ω  
C
= 50 pF  
L
t
t
PHL  
PLH  
Load Circuit  
V
V
OH  
1.5V  
1.5V  
TEST  
S1  
OUTPUT  
t
pd  
open  
7 V  
OL  
t
/t  
PLZ PZL  
SA00028  
t
/t  
open  
PHZ PZH  
Waveform 1. Waveforms Showing the Input (An) to Output (Yn)  
Propagation Delays  
DEFINITIONS  
C
=
Load capacitance includes jig and probe capacitance;  
see AC CHARACTERISTICS for value.  
L
3V  
Output Control  
SA00012  
(Low-level  
enabling  
1.5 V  
1.5 V  
NOTES:  
1. All input pulses are supplied by generators having the following  
0V  
t
t
PLZ  
PZL  
characteristics: PRR 10 MHz, Z = 50 , t 2.5 ns, t 2.5 ns.  
O
r
f
3.5V  
2. The outputs are measured one at a time with one transition per  
Output  
Waveform 1  
S1 at 7 V  
measurement.  
1.5 V  
1.5 V  
V
V
+ 0.3V  
- 0.3V  
OL  
(see Note)  
V
V
OL  
t
t
PHZ  
PZH  
OH  
Output  
Waveform 2  
S1 at Open  
(see Note)  
OH  
0V  
Note:  
Waveform 1 is for an output with internal conditions such that  
the output is low except when disabled by the output control.  
Waveform 2 is for an output with internal conditions such that  
the output is high except when disabled by the output control.  
SA00029  
Waveform 2. Waveforms Showing the 3-State Output Enable  
and Disable Times  
5
2003 Sep 12  
 
Philips Semiconductors  
Product data  
10-bit bus switch with precharged outputs  
for live insertion  
CBT6800  
TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm  
SOT355-1  
6
2003 Sep 12  
 
Philips Semiconductors  
Product data  
10-bit bus switch with precharged outputs  
for live insertion  
CBT6800  
REVISION HISTORY  
Rev  
Date  
Description  
_2  
20030912  
Product data (9397 750 12059); ECN 853-2182 30126 dated 18 July 2003.  
Supersedes data of 28 October 1999 (9397 750 06552).  
Modifications:  
Corrections to block diagram drawing  
_1  
19991028  
Product data (9397 750 06552); ECN: 853-2182 22598 of 28 October 1999  
7
2003 Sep 12  
 
Philips Semiconductors  
Product data  
10-bit bus switch with precharged outputs  
for live insertion  
CBT6800  
Data sheet status  
Product  
status  
Definitions  
[1]  
Level  
Data sheet status  
[2] [3]  
I
Objective data  
Development  
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.  
II  
Preliminary data  
Product data  
Qualification  
Production  
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.  
III  
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. Relevant  
changes will be communicated via a Customer Product/Process Change Notification (CPCN).  
[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  
[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.  
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 in the productsincluding circuits, standard cells, and/or softwaredescribed  
or contained herein in order to improve design and/or performance. When the product is in full production (status Production), relevant changes will be communicated  
via a Customer Product/Process Change Notification (CPCN). 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.  
Koninklijke Philips Electronics N.V. 2003  
Contact information  
All rights reserved. Printed in U.S.A.  
For additional information please visit  
Fax: +31 40 27 24825  
Date of release: 09-03  
For sales offices addresses send e-mail to:  
Document order number:  
9397 750 12059  
Philips  
Semiconductors  
 

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