RCV56HCF PCI/CardBus Modem Designer’s Guide

3.2.3 MDP

The MDP digital electrical characteristics for the hardware interface signals are listed in Table 3-9. The MDP analog electrical characteristics for the hardware interface signals are listed in Table 3-10.

Table 3-9. MDP Digital Electrical Characteristics

Parameter

 

Symbol

Min.

Typ.

Max.

 

Units

Test Conditions1

Input High Voltage

 

VIH

 

 

 

 

VDC

 

Type IA

 

 

2.0

VCC + 0.3

 

 

 

Type IE

 

 

4.0

 

 

Note 2.

Input High Current

 

IIH

 

 

 

 

µA

VIN= 3.6 V, VCC = 3.6 V

Type IB

 

 

40

 

 

 

Input Low Voltage

 

VIL

 

 

 

 

VDC

 

Type IA

 

 

–0.3

0.8

 

 

 

Type IE

 

 

1.0

 

 

Note 2.

Input Low Current

 

IIL

-40

 

µA

 

Input Leakage Current

 

IIN

 

 

±2.5

 

µADC

VIN = 0 to 3.3V, VCC = 3.6 V

Output High Voltage

 

VOH

 

 

 

 

VDC

 

Type OA

 

 

2.4

 

 

ILOAD = – 100 µA

Type OB

 

 

2.4

 

 

ILOAD = 0 mA

Output Low Voltage

 

VOL

 

 

 

 

VDC

 

Type OA

 

 

0.4

 

 

ILOAD = 1.6 mA

Type OB

 

 

0.4

 

 

ILOAD = 0.8 mA

Three-State (Off) Current

ITSI

 

 

±10

 

µADC

VIN = 0 V to VCC

Capacitive Load

 

CL

 

 

 

 

pF

 

Types IA and ID

 

 

 

10

 

 

 

Type IB

 

 

 

20

 

 

 

Capacitive Drive

 

CD

 

 

 

 

pF

 

Types OA and OB

 

 

 

10

 

 

 

Circuit Type

 

 

 

 

 

 

 

 

Type IA

 

 

 

 

 

 

 

TTL

Type IB

 

 

 

 

 

 

 

TTL with pull-up

Type ID

 

 

 

 

 

 

 

~RES

Types OA and OB

 

 

 

 

 

 

 

TTL with 3-state

Notes:

 

 

 

 

 

 

 

 

1. Test Conditions:

VCC = 3.3V ±0.3V, TA = 0°C to 70°C, (unless otherwise stated).

 

 

 

Output loads: Data bus (D0-D7), address bus (A0-A15), chip selects,

 

 

 

 

DRD#, and DWR# loads = 70 pF + one TTL load.

 

 

 

 

Other = 50 pF + one TTL load.

 

 

 

 

2. Type IE inputs are centered approximately 2.5 V and swing 1.5 VPEAK in each direction.

3. Type OE outputs provide oscillator feedback when operating with an external crystal.

3-20

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Hayes Microcomputer Products RCV56HCF manual 3 MDP, MDP Digital Electrical Characteristics