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CBT6800

10-bit bus switch with precharged outputs for live insertion

Philips Electronics 

Philips Semiconductors

10-bit bus switch with precharged outputs

for live insertion

Product specification

CBT6800

FEATURES

• 5 Ω switch connection between two ports

• TTL compatible input and output levels

• Outputs are precharged by bias voltage to minimize signal

distortion during live insertion

• Latch-up protection exceeds 100 mA per JESD78

• ESD protection exceeds 2000 V HBM per JESD22-A114,

200 V MM per JESD22-A115 and 1000 V CDM per JESD22-C101

DESCRIPTION

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.

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.

The CBT6800 is characterized for operation from –40°C to 85°C.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

tPLH

tPHL

CIN

COUT

ICCZ

Propagation delay

An to Bn or Bn to An

Input capacitance – control pin

Output capacitance – I/O pins

Total supply current

CONDITIONS

Tamb = 25°C; GND = 0 V

CL = 50 pF; VCC = 5 V

VI = 0 V or VCC

Outputs disabled; VO = 0 V or VCC

Outputs disabled; VCC =5.5 V

TYPICAL

250

3.5

8.2

1

UNIT

ps

pF

pF

µA

ORDERING INFORMATION

PACKAGES

24-Pin Plastic TSSOP Type I

PIN CONFIGURATION

OE 1

A1 2

A2 3

A3 4

A4 5

A5 6

A6 7

A7 8

A8 9

A9 10

A10 11

GND 12

TEMPERATURE RANGE

–40°C to +85°C

ORDER CODE

CBT6800 PW DH

DWG NUMBER

SOT355–1

24 Vcc

23 B1

22 B2

21 B3

20 B4

19 B5

18 B6

17 B7

16 B8

15 B9

14 B10

13 BIASV

PIN DESCRIPTION

PIN NUMBER SYMBOL

NAME AND FUNCTION

1

OE Output enable

13

BIASV Precharge bias voltage input

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

SA00505

1999 Oct 28

2

853–2182 22598

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