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CBT6820

20-bit bus switch with precharged outputs and Schottky undershoot protection for live insertion

Philips Electronics 

Philips Semiconductors

20-bit bus switch with precharged outputs and

Schottky undershoot protection for live insertion

Product specification

CBT6820

DC ELECTRICAL CHARACTERISTICS

LIMITS

SYMBOL

PARAMETER

TEST CONDITIONS

Tamb = –40°C to +85°C

Min

Typ1

Max

UNIT

VIK

Input clamp voltage

VCC = 4.5V; II = –18mA

–1.2

V

II

Input leakage current (control pin) VCC = 5.5V; VI = GND or 5.5V

IO

Output bias current (B pins)

VCC = 4.5V; BiasV = 2.4V; VO = 0, OE = VCC

±5

µA

–0.25

mA

ICC

Quiescent supply current

VCC = 5.5V; IO = 0, VI = VCC or GND

2.5

mA

∆ICC

Control pins2

VCC = 5.5V, one input at 3.4V,

other inputs at VCC or GND

2.5

mA

CI

Input capacitance per OE pin

VI= 3V or 0

4.5

pF

CO(OFF) Capacitance per port (OFF-state) VO = 3V or 0; switch off

9.5

pF

VCC = 4.5V; VI = 0V; II = 64mA

5

7

ron3

On-resistance

VCC = 4.5V; VI = 0V; II = 30mA

5

7

Ω

VCC = 4.5V; VI = 2.4V; II = –15mA

10

15

VP

Pass voltage

VIN = VCC = 4.5V; Iout = –100µA

3.4

3.6

3.9

V

IUSP

Undershoot static current

protection4

VCC = 5.0V, VBias = VCC

IB = –5µA, VB ≥ 3.0V

–10

mA

NOTES:

1. All typical values are at VCC = 5V, TA = 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.

4. Force IUSP, measure VB ≥ 3V

1999 Apr 05

4

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