TIL308, TIL309 NUMERIC DISPLAYS WITH LOGIC

SLBS002- MARCH 1972-REVISED SEPTEMBER 1992

features

SOLID-STATE DISPLAYS WITH INTEGRAL TTL MSI CIRCUIT CHIP FOR USE IN ALL SYSTEMS REQUIRING A DISPLAY OF BCD DATA

6,9-mm (0.270-Inch) Character Height
TIL308 Has Left Decimal
TIL309 Has Right Decimal
Easy System Interface
Wide Viewing Angle
Internal TTL MSI Chip With Latch, Decoder, and Driver
Constant-Current Drive for Light-Emitting Diodes

description

These internally-driven seven-segment light-emitting-diode (LED) displays contain a five-bit latch and a decoder/LED driver in a single 16-pin package. A description of the functions of the inputs and outputs of these devices are in the terminal function table.

The TTL MSI circuits contain the equivalent of 78 gates on a single chip. Logic inputs and outputs are completely TTL/DTL compatible. The buffered inputs are implemented with relatively large resistors in series with the bases of the input transistors to lower drive-current requirements to one-half of that required for a standard Series 54/74 TTL input.

Some of the additional features of these displays are as follows:

Latched BCD and decimal point logic outputs provided to drive logic processors simultaneously with the displayed data
Minimum number of inputs required . . . 4-line BCD plus decimal point
Overriding blanking for suppressing entire display or pulse-modulation of LED brightness
LED test input to simultaneously turn on all display segments and decimal point
Can be operated in a real-time mode or latched-update-only mode by use of the latch strobe input
Displays numbers 0 through 9 as well as A, C, E, F, or minus sign
Can be blanked by entry of BCD 13 or by use of the blanking input
Decimal point controlled independently with decimal-point latch
Constant-current-source TTL-LED interface for optimum performance.

The latch outputs except Q_DP are active pullup, and each one, except Q_DP, is capable of driving three standard Series 54/74 loads. The LED driver outputs are designed specifically to maintain a relatively constant on-level current of approximately 7 mA through each LED segment and decimal point. All inputs are diode-clamped to minimize transmission-line effects, thereby simplifying system design. Power dissipation is typically 575 mW with all segments on.

Title: NUMERIC DISPLAYS WITH LOGIC
Product Family: INTELLIGENT HYBRID DISPLAYS
Device Functionality: RED 7-SEGMENT LED NUMERIC DISPLAY WITH LOGIC , DISPLAYS BCD DATA, 0.27 INCH CHARACTER HEIGHT, RIGHT DECIMAL, EASY TTL SYSTEM INTERFACE, CONSTANT CURRENT DRIVE FOR LEDS, HIGH LUMINOUS INTENSITY, LOW POWER REQUIREMENTS, 16-PIN DIP
Orderable Devices: TIL308, TIL309

View the complete PDF datasheet: slbs002.pdf (112 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:TIL308, TIL309

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