INTEGRATED CIRCUITS CBT6800 10-bit bus switch with precharged outputs for live insertion Product specification Supersedes data of 1999 Mar 18 1999 Oct 28 Philips Semiconductors Product specification 10-bit bus switch with precharged outputs for live insertion FEATURES CBT6800 DESCRIPTION • 5 Ω switch connection between two ports • TTL compatible input and output levels • Outputs are precharged by bias voltage to minimize signal 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. distortion during live insertion • Latch-up protection exceeds 100 mA per JESD78 • ESD protection exceeds 2000 V HBM per JESD22-A114, 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 kΩ resistor. 200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101 The CBT6800 is characterized for operation from –40°C to 85°C. QUICK REFERENCE DATA SYMBOL CONDITIONS Tamb = 25°C; GND = 0 V PARAMETER TYPICAL UNIT tPLH tPHL Propagation delay An to Bn or Bn to An CL = 50 pF; VCC = 5 V 250 ps CIN Input capacitance – control pin VI = 0 V or VCC 3.5 pF COUT Output capacitance – I/O pins Outputs disabled; VO = 0 V or VCC 8.2 pF ICCZ Total supply current Outputs disabled; VCC =5.5 V 1 µA ORDERING INFORMATION PACKAGES TEMPERATURE RANGE ORDER CODE DWG NUMBER –40°C to +85°C CBT6800 PW DH SOT355–1 24-Pin Plastic TSSOP Type I PIN CONFIGURATION OE PIN DESCRIPTION 1 24 Vcc A1 2 23 B1 A2 3 22 B2 A3 4 21 B3 A4 5 20 B4 A5 6 19 B5 A6 7 18 B6 A7 8 17 B7 A8 9 16 B8 A9 10 15 B9 A10 11 14 B10 GND 12 13 BIASV PIN NUMBER SYMBOL 1 OE NAME AND FUNCTION 13 BIASV 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 A1–A10 A-port I/O pins 23, 22, 21, 20, 19, 18, 17, 16, 15, 14 B1–B10 B-port I/O pins – with active pullup 12 GND Ground (V) 24 VCC Positive supply voltage Output enable Precharge bias voltage input SA00505 1999 Oct 28 2 853–2182 22598 Philips Semiconductors Product specification 10-bit bus switch with precharged outputs for live insertion LOGIC SYMBOL CBT6800 FUNCTION TABLE 13 OE B1 – B10 L A1 – A10 Connect H BIASV Precharge BIASV H = High voltage level L = Low voltage level Z = High impedance “off ” state B1 A1 FUNCTION B10 A10 OE SA00536 ABSOLUTE MAXIMUM RATINGS1, 2 SYMBOL VCC PARAMETER IIK DC input diode current VI DC input voltage3 RATING UNIT –0.5 to +7.0 V –50 mA –1.2 to +7.0 V –50 mA Storage temperature range –65 to 150 °C DC voltage range –0.5 to 6.0 V ISW DC clamp diode current Tstg BiasV CONDITIONS DC supply voltage VO < 0 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 SYMBOL LIMITS PARAMETER Min Max UNIT VCC DC supply voltage 4.5 5.5 V BIASV DC supply voltage 1.3 VCC V VIH High-level input voltage 2.0 VIL Low-level Input voltage Tamb 1999 Oct 28 Operating free-air temperature range –40 3 V 0.8 V +85 °C Philips Semiconductors Product specification 10-bit bus switch with precharged outputs for live insertion CBT6800 DC ELECTRICAL CHARACTERISTICS LIMITS SYMBOL PARAMETER TEST CONDITIONS Tamb = –40°C to +85°C Min VIK Input clamp voltage VCC = 4.5 V; II = –18 mA II Input leakage current – OE VCC = 5.5 V; VI = GND or 5.5 V IO Output bias current VCC = 4.5 V; BiasV = 2.4 V; VO = 0 ICC Typ1 UNIT Max –1.2 ±5 0.25 V µA mA Quiescent supply current VCC = 5.5 V; IO = 0, VI = VCC or GND 50 µA ∆ICC Control pins2 VCC = 5.5 V, one input at 3.4 V, other inputs at VCC or GND 2.5 mA CI Control pins VI= 3 V or 0 3.5 Off-state capacitance – I/O pins VO = 3 V or 0; switch off 8.2 CO(OFF) ron3 VP On-resistance Pass gate voltage pF pF VCC = 4.5 V; VI = 0 V; II = 64 mA 5 7 VCC = 4.5 V; VI = 0 V; II = 30 mA 5 7 VCC = 4.5 V; VI = 2.4 V; II = 15 mA 10 15 3.6 3.9 VIN = VCC = 5.0 V, IOUT = –100 µA 3.4 NOTES: 1. All typical values are at VCC = 5 V, Tamb = 25°C 2. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND 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. 1999 Oct 28 4 Ω V Philips Semiconductors Product specification 10-bit bus switch with precharged outputs for live insertion CBT6800 AC CHARACTERISTICS GND = 0 V; CL = 50 pF; tr = tf ≤ 2.5 ns LIMITS SYMBOL FROM (INPUT) PARAMETER TO (OUTPUT) VCC = +5.0 V ±0.5 V Min Propagation delay1 tpd A or B tPZH TPZL BIASV = GND BIASV = 3 V ON tPHZ TPLZ BIASV = GND BIASV = 3 V ON UNIT Max B or A .25 ns A or B 2.4 3.0 7.7 8.3 ns A or B 1.0 3.1 5.3 7.8 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 VM = 1.5 V, VIN = GND to 3.0 V 7V 3V 1.5V 1.5V S1 Open GND INPUT 500 Ω CL = 50 pF 0V tPLH 500 Ω From Output Under Test tPHL Load Circuit VOH 1.5V 1.5V OUTPUT VOL SA00028 Waveform 1. Waveforms Showing the Input (An) to Output (Yn) Propagation Delays TEST S1 tpd open tPLZ/tPZL 7V tPHZ/tPZH open DEFINITIONS Load capacitance includes jig and probe capacitance; CL = see AC CHARACTERISTICS for value. 3V Output Control (Low-level enabling SA00012 1.5 V 1.5 V 0V tPLZ tPZL NOTES: 1. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns. 2. The outputs are measured one at a time with one transition per measurement. 3.5V Output Waveform 1 S1 at 7 V (see Note) 1.5 V VOL tPHZ tPZH Output Waveform 2 S1 at Open (see Note) VOL + 0.3V VOH VOH – 0.3V 1.5 V 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 1999 Oct 28 5 Philips Semiconductors Product specification 10-bit bus switch with precharged outputs for live insertion TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm 1999 Oct 28 6 CBT6800 SOT355-1 Philips Semiconductors Product specification 10-bit bus switch with precharged outputs for live insertion NOTES 1999 Oct 28 7 CBT6800 Philips Semiconductors Product specification 10-bit bus switch with precharged outputs for live insertion CBT6800 Data sheet status Data sheet status Product status Definition [1] Objective specification Development This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. Preliminary specification Qualification This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. Product specification Production 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. [1] Please consult the most recently issued datasheet before initiating or completing a design. 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. Copyright Philips Electronics North America Corporation 1999 All rights reserved. Printed in U.S.A. Philips Semiconductors 811 East Arques Avenue P.O. Box 3409 Sunnyvale, California 94088–3409 Telephone 800-234-7381 Date of release: 10-99 Document order number: 1999 Oct 28 8 9397 750 06552