Philips CBT6800 manual AC Characteristics, AC Waveforms, Test Circuit and Waveforms, Input Output

Philips SemiconductorsProduct data

10-bit bus switch with precharged outputs						CBT6800
for live insertion
AC CHARACTERISTICS
GND = 0 V; CL = 50 pF; tr = tf ≤ 2.5 ns
					LIMITS
		FROM		TO
SYMBOL	PARAMETER				VCC = +5.0 V	±0.5 V	UNIT
		(INPUT)		(OUTPUT)
					Min	Max
t	Propagation delay1	A or B		B or A	—	.25	ns
pd
tPZH	BIASV = GND			A or B	2.4	7.7	ns
			ON
TPZL	BIASV = 3 V				3.0	8.3
tPHZ	BIASV = GND			A or B	1.0	5.3	ns
			ON
TPLZ	BIASV = 3 V				3.1	7.8

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

VM = 1.5 V, VIN = GND to 3.0 V
	3 V
1.5V	1.5V
INPUT
	0 V
tPLH	tPHL
	VOH
1.5V	1.5V
OUTPUT	VOL
	SA00028

Waveform 1. Waveforms Showing the Input (An) to Output (Yn)

Propagation Delays

TEST CIRCUIT AND WAVEFORMS

		7 V
From Output	500 Ω	S1
		Open
Under Test
		GND
CL = 50 pF	500 Ω
	Load Circuit
	TEST	S1
	tpd	open
	tPLZ/tPZL	7 V
	tPHZ/tPZH	open

DEFINITIONS

CL = Load capacitance includes jig and probe capacitance; see AC CHARACTERISTICS for value.

Output Control (Low-level enabling

tPZL

Output

Waveform 1

S1 at 7 V

(see Note)

tPZH

Output

Waveform 2

S1 at Open

(see Note)

1.5 V

tPLZ

1.5 V

tPHZ

1.5 V

3V

1.5 V

0V

3.5V

VOL + 0.3V

VOL

VOH

VOH - 0.3V

0V

SA00012

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.

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

2003 Sep 12 5