SN54/74LS247 SN54/74LS248 SN54/74LS249 BCD-TO-SEVEN-SEGMENT DECODERS/DRIVERS The SN54/74LS247 thru SN54/74LS249 are BCD-to-Seven-Segment Decoder/Drivers. The LS247 and LS248 are functionally and electrically identical to the LS47 and LS48 with the same pinout configuration. The LS249 is a 16-pin version of the 14-pin LS49 and includes full functional capability for lamp test and ripple blanking which was not available in the LS49. The composition of all characters, except the 6 and 9 are identical between the LS247, 248, 249 and the LS47, 48 and 49. The LS47 thru 49 compose the and without tails, the LS247 thru 249 compose the and with the tails. The LS247 has active-low outputs for direct drive of indicators. The LS248 and 249 have active-high outputs for driving lamp buffers. All types feature a lamp test input and have full ripple-blanking input/output controls. On all types an automatic leading and/or trailing-edge zero-blanking control (RBI and RBO) is incorporated and an overriding blanking input (BI) is contained which may be used to control the lamp intensity by pulsing or to inhibit the output’s lamp test may be performed at any time when the BI/RBO node is at high level. Segment identification and resultant displays are shown below. Display pattern for BCD input counts above 9 are unique symbols to authenticate input conditions. BCD-TO-SEVEN-SEGMENT DECODERS/ DRIVERS LOW POWER SCHOTTKY J SUFFIX CERAMIC CASE 620-09 16 1 N SUFFIX PLASTIC CASE 648-08 16 1 LS247 • Open-Collector Outputs Drive Indicators Directly • Lamp-Test Provision • Leading / Trailing Zero Suppression 16 1 LS248 • Internal Pull-Ups Eliminate Need for External Resistors • Lamp-Test Provision • Leading / Trailing Zero Suppression ORDERING INFORMATION LS249 • Open-Collector Outputs • Lamp-Test Provision • Leading / Trailing Zero Suppression 0 1 D SUFFIX SOIC CASE 751B-03 SN54LSXXXJ Ceramic SN74LSXXXN Plastic SN74LSXXXDW SOIC 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NUMERICAL DESIGNATIONS AND RESULTANT DISPLAYS a f g e b c d SEGMENT IDENTIFICATION FAST AND LS TTL DATA 5-402 SN54/74LS247 • SN54/74LS248 • SN54/74LS249 SN54 / 74LS248 SN54 / 74LS259 (TOP VIEW) SN54 / 74LS247 (TOP VIEW) & ' ! " # $ % & ' ! " # $ & ' ! " # $ % % & ' ! # $ % " ALL CIRCUIT TYPES FEATURE LAMP INTENSITY MODULATION CAPABILITY DRIVER OUTPUTS ACTIVE LEVEL OUTPUT CONFIGURATION SINK CURRENT MAX VOLTAGE TYPICAL POWER DISSIPATION SN54LS247 SN54LS248 SN54LS249 low high high open-collector 2.0 kΩ pull-up open-collector 12 mA 2.0 mA 4.0 mA 15 V 5.5 V 5.5 V 35 mW 125 mW 40 mW SN74LS247 SN74LS248 SN74LS249 low high high open-collector 2.0 kΩ pull-up open-collector 24 mA 6.0 mA 8.0 mA 15 V 5.5 V 5.5 V 35 mW 125 mW 40 mW TYPE LOGIC DIAGRAM LS247 LS248, LS249 " # # % ( & " % ( $ ( $ ! ! ' ( FAST AND LS TTL DATA 5-403 & ' SN54/74LS247 • SN54/74LS248 • SN54/74LS249 LS247 FUNCTION TABLE DECIMAL OR FUNCTION LT RBI D C B A 0 1 2 3 H H H H H X X X L L L L L L L L L L H H L H L H 4 5 6 7 H H H H X X X X L L L L H H H H L L H H 8 9 10 11 H H H H X X X X H H H H L L L L 12 13 14 15 H H H H X X X X H H H H BI RBI LT X H L X L X X L X INPUTS OUTPUTS BI/RBO NOTE a b c d e f g H H H H ON OFF ON ON ON ON ON ON ON ON OFF ON ON OFF ON ON ON OFF ON OFF ON OFF OFF OFF OFF OFF ON ON L H L H H H H H OFF ON ON ON ON OFF OFF ON ON ON ON ON OFF ON ON OFF OFF OFF ON OFF ON ON ON OFF ON ON ON OFF L L H H L H L H H H H H ON ON OFF OFF ON ON OFF OFF ON ON OFF ON ON ON ON ON ON OFF ON OFF ON ON OFF OFF ON ON ON ON H H H H L L H H L H L H H H H H OFF ON OFF OFF ON OFF OFF OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF ON OFF ON ON ON OFF ON ON ON OFF X L X X L X X L X L L H OFF OFF ON OFF OFF ON OFF OFF ON OFF OFF ON OFF OFF ON OFF OFF ON OFF OFF ON 1 2 3 4 LS248, LS249 FUNCTION TABLE DECIMAL OR FUNCTION LT RBI D C B A 0 1 2 3 H H H H H X X X L L L L L L L L L L H H L H L H 4 5 6 7 H H H H X X X X L L L L H H H H L L H H 8 9 10 11 H H H H X X X X H H H H L L L L 12 13 14 15 H H H H X X X X H H H H BI RBI LT X H L X L X X L X INPUTS OUTPUTS BI/RBO NOTE a b c d e f g H H H H H L H H H H H H H H L H H L H H H L H L H L L L L L H H L H L H H H H H L H H H H L L H H H H H L H H L L L H L H H H L H H H L L L H H L H L H H H H H H H L L H H L L H H L H H H H H H L H L H H L L H H H H H H H H L L H H L H L H H H H H L H L L H L L L L L L L L H H L L L H L H H H L H H H L X L X X L X X L X L L H L L H L L H L L H L L H L L H L L H L L H 1 1 1 2 3 4 H = HIGH Level, L = LOW Level, X = Irrelevant NOTES: 1. The blanking input (BI) must be open or held at a high logic level when output functions 0 through 15 are desired. The ripple-blanking input (RBI) must NOTES: 1. be open or high if blanking of a decimal zero is not desired. 2. When a low logic level is applied directly to the blanking input (BI), all segment outputs are off regardless of the level of any other input. 3. When ripple-blanking input (RBI) and inputs A, B, C, and D are at a low level with the lamp test input high, all segment outputs go off and the NOTES: 1. ripple-blanking output (RBO) goes to a low level (response condition). 4. When the blanking input/ripple blanking output (BI/RBO) is open or held high and a low is applied to the lamp-test input, all segment outputs are on. BI/RBO is wire-AND logic serving as blanking input (BI) and/or ripple-blanking output (RBO). FAST AND LS TTL DATA 5-404 SN54/74LS247 GUARANTEED OPERATING RANGES Min Typ Max Unit VCC Symbol Supply Voltage Parameter 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 – 55 0 25 25 125 70 °C IOH Output Current — High BI / RBO 54, 74 – 50 µA IOL Output Current — Low BI / RBO 54 74 1.6 3.2 mA VO(off) Off-State Output Voltage a – g 54, 74 15 V IO(on) On-State Output Current a – g On-State Output Current a – g 54 74 12 24 mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Min Parameter Typ Unit Test Conditions V Guaranteed Input HIGH Voltage for All Inputs V Guaranteed Input LOW Voltage for All Inputs V VCC = MIN, IIN = – 18 mA 4.2 V 4.2 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table 0.4 V IOL = 1.6 mA 0.5 V IOL = 3.2 mA 250 µA VCC = MAX, VIH = 2.0 V, VO(off) = 15 V, VIL = MAX VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage Output HIGH Voltage BI / RBO 54 2.4 VOH 74 2.4 Output LOW Voltage BI / RBO 54, 74 0.25 VOL 74 0.35 IO(off) Off-State Output Current a–g VO(on) On-State Output Voltage a–g IIH Input HIGH Current 2.0 54 0.7 74 0.8 – 0.65 54, 74 – 1.5 VCC = VCC MIN, VIN = VIL or VIH per Truth Table 54, 74 0.25 0.4 V IO(on) = 12 mA 74 0.35 0.5 V IO(on) = 24 mA 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V – 0.4 mA VCC = MAX, VIN = 0.4 V – 2.0 mA VCC = MAX 13 mA VCC = MAX Input LOW Current Any Input, except BI/ RBO IIL Max BI / RBO VCC = MIN, VIH = 2.0 V, VIL per Truth Table – 1.2 IOS Short Circuit Current BI / RBO (Note 1) ICC Power Supply Current – 0.3 7.0 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C) Limits Max Unit tPLH tPHL Symbol Turn-Off Time from A Input Turn-On Time from A Input Parameter 100 100 ns tPHL tPLH Turn-Off Time from RBI Input Turn-On Time from RBI Input 100 100 ns Min Typ FAST AND LS TTL DATA 5-405 Test Conditions CL = 15 pF, RL = 665 Ω SN54/74LS248 GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 – 55 0 25 25 125 70 °C IOH Output Current — High BI / RBO 54, 74 – 50 µA Output Current — High a – g 54, 74 – 100 Output Current — Low BI / RBO Output Current — Low BI / RBO 54 74 1.6 3.2 Output Current — Low a – g Output Current — Low a – g 54 74 2.0 6.0 IOL mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Min Parameter VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage Typ IOH Output Current a–g Output LOW Voltage a–g VOL BI / RBO V V Guaranteed Input LOW Voltage for All Inputs 0.8 – 0.65 – 1.5 V VCC = MIN, IIN = – 18 mA 54 2.4 4.2 V 74 2.4 4.2 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table 54, 74 – 1.3 – 2.0 mA 54, 74 0.25 0.4 74 0.35 0.5 54, 74 0.25 0.4 V 74 IIL 0.35 VCC = MIN, VO = 0.85 V, Input Conditions as for VOH IOL = 2.0 mA IOL = 6.0 mA V IIH Test Conditions Guaranteed Input HIGH Voltage for All Inputs 0.7 74 Output HIGH Voltage a – g and BI / RBO Unit 2.0 54 VOH Max 0.5 IOL = 1.6 mA VCC = MIN, VIH = 2.0 V, VIL = per Truth Table IOL = 3.2 mA Input HIGH Current Any Input, except BI/ RBO 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V Input LOW Current Any Input, except BI/ RBO – 0.4 mA VCC = MAX, VIN = 0.4 V – 2.0 mA VCC = MAX 38 mA VCC = MAX BI / RBO IOS Short Circuit Current BI / RBO (Note 1) ICC Power Supply Current – 1.2 – 0.3 25 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C) Limits Symbol Parameter Min Typ Max Unit Test Conditions tPLH tPHL Propagation Delay Time, High-to-Low-Level Output from A Input Propagation Delay Time, Low-to-High-Level Output from A Input 100 100 ns CL = 15 pF RL = 4.0 kΩ tPHL tPLH Propagation Delay Time, High-to-Low-Level Output from RBI Input Propagation Delay Time, Low-to-High-Level Output from RBI Input 100 100 ns CL = 15 pF RL = 6.0 kΩ FAST AND LS TTL DATA 5-406 SN54/74LS249 GUARANTEED OPERATING RANGES Symbol Parameter Min Typ Max Unit VCC Supply Voltage 54 74 4.5 4.75 5.0 5.0 5.5 5.25 V TA Operating Ambient Temperature Range 54 74 – 55 0 25 25 125 70 °C IOH Output Current — High BI / RBO 54, 74 – 50 µA IOL Output Current — Low BI / RBO Output Current — Low BI / RBO 54 74 1.6 3.2 mA VOH Output Voltage — High a – g 54, 74 5.5 V IOL Output Current — Low a – g Output Current — Low a – g 54 74 4.0 8.0 mA DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Min Parameter VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage VOH Output HIGH Voltage BI / RBO IOH Output HIGH Current a–g Typ Max Unit 2.0 54 VOL a–g V Guaranteed Input LOW Voltage for All Inputs V VCC = MIN, IIN = – 18 mA VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table 0.8 – 0.65 – 1.5 54 2.4 4.2 V 74 2.4 4.2 V 54, 74 Output LOW Voltage BI / RBO V 0.7 74 250 µA VCC = MIN, VIH = 2.0 V, VOH = 5.5 V, VIL = MAX V IOL = 1.6 mA 54, 74 0.25 0.4 74 0.35 0.5 54, 74 0.25 0.4 IIH IIL 0.35 VCC = MIN, VIH = 2.0 V, VIL = per Truth Table IOL = 3.2 mA V 74 Test Conditions Guaranteed Input HIGH Voltage for All Inputs 0.5 IOL = 4.0 mA IOL = 8.0 mA Input HIGH Current Any Input, except BI/ RBO 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V Input LOW Current Any Input, except BI/ RBO – 0.4 mA VCC = MAX, VIN = 0.4 V – 2.0 mA VCC = MAX 15 mA VCC = MAX BI / RBO IOS Short Circuit Current BI / RBO (Note 1) ICC Power Supply Current – 1.2 – 0.3 8.0 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C) Limits Symbol Parameter Min Typ Max Unit Test Conditions tPHL tPLH Propagation Delay Time, High-to-Low-Level Output from A Input Propagation Delay Time, Low-to-High-Level Output from A Input 100 100 ns CL = 15 pF, RL = 2.0 Ω tPHL tPLH Propagation Delay Time, High-to-Low-Level Output from RBI Input Propagation Delay Time, Low-to-High-Level Output from RBI Input 100 100 ns CL = 15 pF, RL = 6.0 Ω FAST AND LS TTL DATA 5-407 Case 751B-03 D Suffix 16-Pin Plastic SO-16 -A- "! ! " " ! " # 1 %# ) ! !" $ !" 8 C -T- D M K " ! #! J F ! Case 648-08 N Suffix 16-Pin Plastic R X 45° G " ! ) #! P ! " " 9 -B- ! 16 & ! ! ° ° ° ° ( ( ( ( "! ! " " ! ! ' " " ! ' ! " # & -A- 16 9 1 8 ! ! $ ! B # ) " ! " # ) !" $ !" ) F L C S -T- K H G M J D " Case 620-09 J Suffix 16-Pin Ceramic Dual In-Line -A- ! ! ! ! ° ° ° ° "! ! " 16 " ) " L K M N J G D " $ " $ ! " " ! ! FAST AND LS TTL DATA 5-408 & # ) !" $ !" ) -T $ " " C F & 8 E ! ! ! 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Literature Distribution Centers: USA: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. EUROPE: Motorola Ltd.; European Literature Centre; 88 Tanners Drive, Blakelands, Milton Keynes, MK14 5BP, England. JAPAN: Nippon Motorola Ltd.; 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan. ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.; Silicon Harbour Center, No. 2 Dai King Street, Tai Po Industrial Estate, Tai Po, N.T., Hong Kong. ◊ FAST AND LS TTL DATA 5-409