MT8920B-1 查看數據表（PDF） - Mitel Networks

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MT8920B-1

ISO-CMOS ST-BUS™ FAMILY ST-BUS Parallel Access Circuit

Mitel Networks 

MT8920B CMOS

Absolute Maximum Ratings* - Voltages are with respect to ground (VSS) unless otherwise stated.

Parameter

Symbol

Min

Max

1 Supply Voltage

VDD

-0.3

7.0

2 Voltage on any I/O pin

-0.3

VDD + 0.3

3 Current on any I/O pin

II/O

±25

4 Storage Temperature

TST

-55

125

5 Package Power Dissipation

Plastic

PD

600

* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.

Units

V

V

mA

°C

mW

Recommended Operating Conditions - Voltages are with respect to ground (VSS) unless otherwise stated.

Characteristics

Sym Min Typ‡ Max Units

Test Conditions

1 Supply Voltage

VDD 4.75 5.0 5.25 V

2 Input High Voltage

VIH 2.4

VDD V for 400mV noise margin

3 Input Low Voltage

VIL

0

0.4

V for 400mV noise margin

4 Operating Temperature

TA -40 25

85

°C

5 Operating Clock Frequency

fCK

4.096

MHz

‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.

DC Electrical Characteristics - Voltages are with respect to ground (VSS) unless otherwise stated.

Characteristics

Sym Min Typ‡ Max Units

Test Conditions

1 Supply Current

Static

Dynamic

ICCS

ICCD

10

µA outputs unloaded

5

10 mA @fCK = 4.096 MHz

2 Input High Voltage

VIH 2.0

V

3 Input Low Voltage

VIL

0.8

V

4 Input Leakage Current

IZ

±10 µA VDD=5.25V,

VIN=VSS to VDD

5 Input capacitance

CIN

10 pF

6 Schmitt trigger input high (MMS)

VT+ 3.8 3.0

V

7 Schmitt trigger input low (MMS)

VT-

2.0 1.0

V

8 Schmitt trigger hysteresis (MMS)

VH 0.8 1.0

V

9 Output high current (except IRQ)

IOH

10

15

mA VOH = 2.4V, VDD = 4.75V

10 Output low current (except IRQ)

IOL

5

10

mA VOL = 0.4V, VDD = 4.75V

11 IRQ, DTACK, BUSY Sink Current IOL

10

15

mA VOL = 0.4V, VDD = 4.75V

12 Tristate Leakage A4-A0, OE, WE

IOZ

(mode 3)

±1 ±10 µA VDD = 5.25V

VOUT = VSS to VDD

13 Open drain off-state current

IOFF

IRQ, DTACK, BUSY

±1 ±20 µA VDD = 5.25V

VOUT = VDD

14 Output capacitance

CO

15 pF

‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.

3-18

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