TIL306, TIL307 NUMERIC DISPLAYS WITH LOGIC

SLBS001 - JUNE 1982 - REVISED SEPTEMBER 1992

features

SOLID-STATE DISPLAYS WITH INTEGRAL TTL MSI CIRCUIT CHIP FOR USE IN ALL SYSTEMS WHERE THE DATA TO BE DISPLAYED IS THE PULSE COUNT

6,9-mm (0.270-Inch) Character Height
High Luminous Intensity
TIL306 Has Left Decimal
TIL307 Has Right Decimal
Easy System Interface
Wide Viewing Angle
Internal TTL MSI Chip and Counter, Latch, Decoder, and Driver
Constant-Current Drive for Light-Emitting Diodes

description

These internally-driven seven-segment light-emitting-diode (LED) displays contain a BCD counter, a four-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 86 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. The serial-carry input, actually two internal loads, is rated as one standard series 54/74 load.

The logic outputs, except RBO, are active pullup, and the latch outputs Q_A, Q_B, Q_C, and Q_D are each capable of driving three standard Series 54/74 loads at a low logic level or six loads at a high logic level while the maximum-count output is capable of driving five Series 54/74 loads at a low logic level or ten loads at a high logic level. The RBO node with passive pull-up serves as a ripple-blanking output with the capability to drive three 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. Maximum clock frequency is typically 18 MHz and power dissipation is typically 600 mW with all segments on.

The display format is as follows:

The displays may be interconnected to produce an n-digit display with the following features:

Ripple-blanking input and output for blanking leading or trailing zeroes
Floating-decimal-point logic capability
Overriding blanking for suppressing entire display or pulse modulation of LED brightness
Dual count-enable inputs for parallel lookahead and serial ripple logic to build high-speed fully synchronous, multidigit counter systems with no external logic, minimizing total propagation delay from the clock to the last latch output
Provision for ripple-count cascading between packages
Positive-edge-triggered synchronous BCD counter
Parallel BCD data outputs available to drive logic processors or remote slaved displays simultaneously with data being displayed
Latch strobe input allows counter to operate while a previous data point is displayed
Reset-to-zero capability with clear input.

Title: NUMERIC DISPLAYS WITH LOGIC
Product Family: INTELLIGENT HYBRID DISPLAYS
Device Functionality: RED 7-SEGMENT LED NUMERIC DISPLAY WITH LOGIC , DISPLAYS PULSE COUNT W/CARRY, 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: TIL306, TIL307

View the complete PDF datasheet: slbs001.pdf (125 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:TIL306, TIL307

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