6-9

TELCOM SEMICONDUCTOR, INC.

7

6

5

4

3

1

2

8

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

Operating Voltage Range

3

5

6

V

Operating Current

Display Blank

—

10

50

µA

Oscillator Input Current

Pin 36

—

±2

±10

µA

Segment Rise/Fall Time

—

0.5

—

µsec

Backplane Rise/Fall Time

—

1.5

—

µsec

Oscillator Frequency

Pin 36 Floating

—

16

—

kHz

Backplane Frequency

Pin 36 Floating

—

125

—

Hz

Input Characteristics

Logic “1” High Input Voltage

3

—

—

V

Logic “0” Low Input Voltage

—

—

1

V

Input Leakage Current

Pins 27–34

—

±0.01

±1

µA

Input Capacitance

Pins 27–34

—

5

—

pF

BP Input Current

Measured at Pin 5 With

—

±0.01

±1

µA

Leakage

Pin 36 at GND

BP Input Capacitance

All Devices

—

200

—

pF

AC Characteristics

Symbol

Parameter

Test Conditions

Chip Select Active Pulse Width

(Note 1)

200

—

—

nsec

Data Setup Time

100

—

—

nsec

Data Hold Time

10

0

—

nsec

Inter-Chip Select Time

2

—

—

µsec

NOTE: 1. Other chip select (CS) is either held at logic zero or both CS1 and CS2 driven together.

*Stresses above those listed under "Absolute Maximum Ratings" may

cause permanent 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 sections of the specifications is not

implied. Exposure to absolute maximum rating conditions for extended

periods may affect device reliability.

NOTES: 1. This limit refers to that of the package and will not be realized

during normal operation.

2. Due to the SCR structure inherent in the CMOS process,

than GND may cause destructive latch-up. For this reason, it

is recommended that inputs from external sources not oper-

ating on the same power supply not be applied to the device

before its supply is established, and, in multiple supply

systems, the supply to the TC7211AM be turned on first.

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage ........................................................ +6.5V

Input Voltage, Any Terminal

Operating Temperature Range ................ –20

°C to +85°C

Storage Temperature Range ................. –65

°C to +150°C

Lead Temperature (Soldering, 10 sec) ................. +300

°C

BUS COMPATIBLE, 4-DIGIT

CMOS DECODER/DRIVER

TC7211AM