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IA8044

SDLC Communications Controller

InnovASIC, Inc 

IA8044/IA8344

SDLC Communications Controller

Data Sheet

March 30, 2010

3. Maximum Ratings and DC Characteristics

The IA8044/IA8344 absolute maximum ratings and DC characteristics are provided in Tables 3

and 4, respectively.

Table 3. IA8044 and IA8344 Absolute Maximum Ratings

Parameter

Ambient temperature under bias

Storage temperature

Power supply (VDD)

Voltage on any pin to VSS

Power dissipation

Rating

−40°C to +85°C

−40°C to +150°C

−0.3 to +6VDC

−0.3 to (VDD +0.3)a

2W

aThis device does not contain EPROM or its related programming circuitry. Therefore, this limit must be

adhered to especially for input pin EA, which is used as the programming voltage pin in the Intel device.

Exceeding the listed maximum voltage will cause damage to the device.

Table 4. IA8044 and IA8344 DC Characteristics

Symbol

Parameter

Min Typ Max Unit

VIL Input Low Voltage

– – 0.8 V

VIH Input High Voltage

2.0 – – V

VOL Output Low Voltage (IOL= 4mA) – – 0.4 V

VOH Output High Voltage (IOH= 4mA) 3.5 – – V

RPU Pull-Up Resistance (Ports 1, 2, 3) – 50 – KW

RPD Pull-Down Resistance (RST)

– 50 – KW

IIL

Input Low Current (Ports 1, 2, 3) −200 – 1 µA

IIL1 Input Low Current (PO, EA)

−1 – 1 µA

IIH Input High Current (RST)

−1 – 200 µA

IIH1 Input High Current (PO, EA)

−1 – 1 µA

IOZ Tri-state Leakage Current (Port 0) −10 – 10 µA

ICC Power Supply Current (@ 12 MHz) – – 50 mA

CIO Pin Capacitance

– 4 – pF

4. Functional Description

4.1 Functional Block Diagram

A functional block diagram of the IA8044 and IA8344 is shown in Figure 5. Descriptions of the

functional modules are provided in the following subsections.

®

IA211010112-04

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