Philips CBT6800 manual Features, Description, Quick Reference Data, Ordering Information

Philips Semiconductors	Product data
10-bit bus switch with precharged outputs	CBT6800
for live insertion

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

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.

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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

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 to 85 °C.

QUICK REFERENCE DATA

SYMBOL	PARAMETER	CONDITIONS	TYPICAL	UNIT
		Tamb = 25 °C; GND = 0 V
tPLH	Propagation delay	CL = 50 pF; VCC = 5 V	250	ps
tPHL	An to Bn or Bn to An
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	∝A

ORDERING INFORMATION

PACKAGES	TEMPERATURE RANGE	ORDER CODE	DWG NUMBER
24-Pin Plastic TSSOP	-40 to +85 °C	CBT6800PW	SOT355-1

PIN CONFIGURATION

OE	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 DESCRIPTION

PIN NUMBER	SYMBOL		NAME AND FUNCTION
1			Output enable
		OE
13	BIASV		Precharge bias voltage input
2, 3, 4, 5, 6,	A1-A10		A-port I/O pins
7, 8, 9, 10, 11
23, 22, 21, 20, 19,	B1-B10		B-port I/O pins - with active pullup
18, 17, 16, 15, 14
12	GND		Ground (V)
24	VCC		Positive supply voltage

SA00505

2003 Sep 12 2