SN74CBTS3306

DUAL FET BUS SWITCH

WITH SCHOTTKY DIODE CLAMPING

SCDS029I − JANUARY 1996 − REVISED JANUARY 2004

3

POST OFFICE BOX 655303

(unless otherwise noted) (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4 V

VCC = 5 V

± 0.5 V

UNIT

PARAMETER

(INPUT)

(OUTPUT)

MIN

MAX

MIN

MAX

UNIT

tpd†

A or B

B or A

0.35

0.25

ns

ten

OE

A or B

5.6

1.8

5

ns

tdis

OE

A or B

4.6

1

4.3

ns

† The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance, when

driven by an ideal voltage source (zero output impedance).

PARAMETER MEASUREMENT INFORMATION

From Output

Under Test

CL = 50 pF

(see Note A)

LOAD CIRCUIT

S1

7 V

Open

GND

500

Ω

500

Ω

TEST

tpd

tPLZ/tPZL

tPHZ/tPZH

S1

Open

7 V

0pen

tPLH

tPHL

Output

Waveform 1

S1 at 7 V

(see Note B)

Output

Waveform 2

S1 at Open

(see Note B)

VOL

VOH

tPZL

tPZH

tPLZ

tPHZ

1.5 V

1.5 V

3 V

0 V

1.5 V

1.5 V

VOH

VOL

1.5 V

VOL + 0.3 V

1.5 V

VOH − 0.3 V

0 V

Input

3.5 V

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES

Output

NOTES: A. CL includes probe and jig capacitance.

B. 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.

C. 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.

D. The outputs are measured one at a time with one transition per measurement.

E. tPLZ and tPHZ are the same as tdis.

F. tPZL and tPZH are the same as ten.

G. tPHL and tPLH are the same as tpd.

3 V

Output

Control

0 V

1.5 V

1.5 V

Figure 1. Load Circuit and Voltage Waveforms