TIL311 HEXADECIMAL DISPLAY WITH LOGIC SODS001D – MARCH 1972 – REVISED DECEMBER 1997 SOLID-STATE HEXADECIMAL DISPLAY WITH INTEGRAL TTL CIRCUIT TO ACCEPT, STORE, AND DISPLAY 4-BIT BINARY DATA D D D D D D 0.300-Inch (7,62-mm) Character Height High Brightness Left-and-Right-Hand Decimals Separate LED and Logic Power Supplies May Be Used Wide Viewing Angle D D D Internal TTL MSI Chip With Latch, Decoder, and Driver Operates from 5-V Supply Constant-Current Drive for Hexadecimal Characters Easy System Interface mechanical data These assemblies consist of display chips and a TTL MSI chip mounted on a header with a red molded plastic body. Multiple displays may be mounted on 0.450-inch (11,43-mm) centers. CL OF PIN 1 0.420 (10,67) 0.010 (0,26) 0.150 (3,80) 0.010 (0,25) NOM 4 Sides 0.070 (1,78) CL OF PIN 1 0.300 (7,62) 0.075 (1,91) MAX 0.380 (9,65) 0.075 (1,91) MAX 5° 0.086 (2,16) MAX 0.760 (19,31) 0.270 (6,90) 0.720 (18,29) 14 1 13 2 12 3 0.015 (0,38) 4 0.170 (4,30) 10 0.160 (4,10) 0.022 (0,56) 0.018 (0,46) DIA All Pins 5 0.100 (2,54) TP 12 Places (See Note B) 0.160 (4,10) Logic Chip 8 7 0.085 (2,16) MAX Seating Plane 0.140 (3,60) 0.110 (2,80) 0.170 (4,32) MIN 0.022 (0,56) 0.018 (0,46) DIA All Pins PIN 1 PIN 2 PIN 3 PIN 4 PIN 5 PIN 6 PIN 7 PIN 8 PIN 9 PIN 10 PIN 11 PIN 12 PIN 13 PIN 14 LED SUPPLY VOLTAGE LATCH DATA INPUT B LATCH DATA INPUT A LEFT DECIMAL POINT CATHODE LATCH STROBE INPUT OMITTED COMMON GROUND BLANKING INPUT OMITTED RIGHT DECIMAL POINT CATHODE OMITTED LATCH DATA INPUT D LATCH DATA INPUT C LOGIC SUPPLY VOLTAGE, VCC NOTES: A. All linear dimensions are in inches and (parenthetically) in millimeters. B. The true-position pin spacing is 0.100 (2,54) between centerlines. Each centerline is located within 0.010 ( 0,26) of its true longitudinal position relative to pins 1 and 14. C. Associated centerlines of character segments and decimal point dimensions are nominal. Copyright 1997, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443 • 1 TIL311 HEXADECIMAL DISPLAY WITH LOGIC SODS001D – MARCH 1972 – REVISED DECEMBER 1997 description This hexadecimal display contains a four-bit latch, decoder, driver, and 4 × 7 light-emitting-diode (LED) character with two externally driven decimal points in a 14-pin package. A description of the input functions of this device follows. PIN NO. DESCRIPTION LATCH STROBE INPUT FUNCTION 5 When low, the data in the latches follow the data on the latch data inputs. When high, the data in the latches will not change. If the display is blanked and then restored while the enable input is high, the previous character will again be displayed. BLANKING INPUT 8 When high, the display is blanked regardless of the levels of the other inputs. When low, a character is displayed as determined by the data in the latches. The blanking input may be pulsed for intensity modulation. 3, 2, 13, 12 Data on these inputs are entered into the latches when the enable input is low. The binary weights of these inputs are A = 1, B = 2, C = 4, D = 8. 4, 10 These LEDs are not connected to the logic chip. If a decimal point is used, an external resistor or other current-limiting mechanism must be connected in series with it. LED SUPPLY 1 This connection permits the user to save on regulated VCC current by using a separate LED supply, or it may be externally connected to the logic supply (VCC). LOGIC SUPPLY VOLTAGE (VCC) 14 Separate VCC connection for the logic chip COMMON GROUND 7 This is the negative terminal for all logic and LED currents except for the decimal points. LATCH DATA INPUTS (A, B, C, D) DECIMAL POINT CATHODES The LED driver outputs are designed to maintain a relatively constant on-level current of approximately 5 mA through each LED that forms the hexadecimal character. This current is virtually independent of the LED supply voltage within the recommended operating conditions. Drive current varies slightly with changes in logic supply voltage resulting in a change in luminous intensity as shown in Figure 2. This change will not be noticeable to the eye. The decimal point anodes are connected to the LED supply; the cathodes are connected to external pins. Since there is no current limiting built into the decimal point circuits, limiting must be provided externally if the decimal points are used. The resultant displays for the values of the binary data in the latches are as shown below. 0 2 1 2 3 4 5 6 7 8 • 9 10 POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443 • 11 12 13 14 15 TIL311 HEXADECIMAL DISPLAY WITH LOGIC SODS001D – MARCH 1972 – REVISED DECEMBER 1997 functional block diagram LED Supply Logic Supply A Latch Data Inputs B 4-Bit Latch Decoder C Constant Current Driver D Latch Strobe Input Blanking Input Left Decimal Point Cathode Right Decimal Point Cathode absolute maximum ratings over operating case temperature range (unless otherwise noted) Supply voltage, VCC, logic (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Supply voltage, LED (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage (pins 2, 3, 5, 8, 12, 13) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V Decimal point current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Operating case temperature range (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 85°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 25°C to 85°C NOTES: 1. Voltage values are with respect to common ground terminal. 2. Case temperature is the surface temperature of the plastic measured directly over the integrated circuit. Forced-air cooling may be required to maintain this temperature. recommended operating conditions Supply voltage, VCC, logic Supply voltage, VLED, LED MIN NOM MAX 4.5 5 5.5 4 5 5.5 Decimal point current, IF(DP) 5 UNIT V V mA Pulse duration, tw, latch strobe 40 ns Setup time, tsu 50 ns Hold time, th 40 ns • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443 • 3 TIL311 HEXADECIMAL DISPLAY WITH LOGIC SODS001D – MARCH 1972 – REVISED DECEMBER 1997 operating characteristics at TA = 25°C PARAMETER Iv TEST CONDITIONS Luminous intensityy (see ( Note 3)) λp ∆λ Wavelength at peak emission VIH VIL High-level ilnput voltage VIK II Input clamp voltage IIH IIL High-level input current ICC ILED Supply current, logic Average per character LED VCC = 5 V, See Note 4 VLED = 5 V, Each decimal IF(DP) = 5 mA VCC = 5 V,, IF(DP) = 5 mA, Spectral bandwidth MIN TYP 35 100 µcd 35 100 µcd 660 nm 20 nm VLED = 5 V,, See Note 5 MAX 2 V Low-level input voltage Input current Low-level input current Supply current, LED VCC = 4.75 V, VCC = 5.5 V , II = – 12 mA VI = 5.5 V VCC = 5.5 V , VCC = 5.5 V , VI = 2.4 V VI = 0.4 V VCC = 5.5 V , IF(DP) = 5 mA, VLED = 5.5 V, All inputs at 0 V UNIT 0.8 V – 1.5 V 1 mA 40 µA – 1.6 mA 60 90 mA 45 90 mA NOTES: 3. Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (International Commission on Illumination) eye-response curve. 4. This parameter is measured with displayed, then again with 5. These parameters are measured with displayed. displayed. TYPICAL CHARACTERISTICS RELATIVE SPECTRAL CHARACTERISTIC 1 Relative Luminous Intensity 0.9 VCC = 5 V TC = 25°C 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 600 610 620 630 640 650 660 670 680 690 700 λ – Wavelength – nm Figure 1 4 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443 • TIL311 HEXADECIMAL DISPLAY WITH LOGIC SODS001D – MARCH 1972 – REVISED DECEMBER 1997 TYPICAL CHARACTERISTICS RELATIVE LUMINOUS INTENSITY vs LOGIC SUPPLY VOLTAGE RELATIVE LUMINOUS INTENSITY vs CASE TEMPERATURE 1.4 4 VLED = 5 V TC = 25°C I V – Luminous Intensity Relative to TC = 25°C I V – Luminous Intensity Relative to VCC = 5 V 1.6 1.2 1 0.8 0.6 0.4 0.2 0 4.5 4.6 4.7 4.8 4.9 5 VCC = 5 V 2 1 0.7 0.4 0.2 0.1 5.1 5.2 5.3 5.4 5.5 0 10 20 30 40 50 60 70 TC – Case Temperature – °C VCC – Logic Supply Voltage – V Figure 3 Figure 2 • POST OFFICE BOX 655303 DALLAS, TEXAS 75265 POST OFFICE BOX 1443 HOUSTON, TEXAS 77251–1443 • 5