3-40

TELCOM SEMICONDUCTOR, INC.

TC520A

SERIAL INTERFACE ADAPTER FOR

TC500 A/D CONVERTER FAMILY

Symbol

Parameter

Min

Typ

Max

Unit

Supply

Operating Voltage Range

4.5

5

5.5

V

Supply Current

—

0.8

1.5

mA

Input Characteristics

Low Input Voltage

—

—

0.8

V

High Input Voltage

2.0

—

—

V

Input Leakage Current

—

—

10

µA

Pull-down Current (CE)

—

5

—

µA

Pull-up Current (READ, LOAD)

—

5

—

µA

Low Output Voltage

—

0.2

0.3

V

High Output Voltage

3.5

4.3

—

V

—

—

250

nsec

Crystal Frequency

—

1.0

4.0

MHz

—

—

6.0

MHz

Timing Characteristics

READ Delay Time

250

—

—

nsec

Data Read Setup Time

1

—

—

µsec

450

—

—

nsec

LOAD Setup Time

1

—

—

µsec

Data Load Setup Time

50

—

—

nsec

150

—

—

nsec

150

—

—

nsec

Load Default Low Time

250

—

—

nsec

Load Default Setup Time

250

—

—

nsec

Parameter

Integrator ZERO Time

—

0.5

—

msec

Autozero (RESET) Time at Power-Up

—

100

—

msec

ABSOLUTE MAXIMUM RATINGS*

* Static-sensitive device. Unused devices must be stored in conductive

material. Protect devices from static discharge and static fields. Stresses

above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. These are stress ratings only and functional

operation of the device at these or any other conditions above those

indicated in the Operational Specifications is not implied. Any exposure to

Absolute Maximum Rating Conditions may affect device reliability.