SN54/74LS299 8-BIT SHIFT/STORAGE REGISTER WITH 3-STATE OUTPUTS The SN54 / 74LS299 is an 8-Bit Universal Shift / Storage Register with 3-state outputs. Four modes of operation are possible: hold (store), shift left, shift right and load data. The parallel load inputs and flip-flop outputs are multiplexed to reduce the total number of package pins. Separate outputs are provided for flip-flops Q0 and Q7 to allow easy cascading. A separate active LOW Master Reset is used to reset the register. 8-BIT SHIFT/STORAGE REGISTER WITH 3-STATE OUTPUTS LOW POWER SCHOTTKY • Common I/O for Reduced Pin Count • Four Operation Modes: Shift Left, Shift Right, Load and Store • Separate Shift Right Serial Input and Shift Left Serial Input for Easy Cascading • 3-State Outputs for Bus Oriented Applications • Input Clamp Diodes Limit High-Speed Termination Effects • ESD > 3500 Volts J SUFFIX CERAMIC CASE 732-03 20 1 N SUFFIX PLASTIC CASE 738-03 20 CONNECTION DIAGRAM DIP (TOP VIEW) V CC S 1 D s7 20 19 18 Q 7 17 I/O 7 I/O 5 16 15 I/O 3 14 I/O 1 CP 13 12 1 DS 0 DW SUFFIX SOIC CASE 751D-03 11 20 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 1 S 0 2 OE 1 3 OE 2 4 I/O 6 5 I/O 4 6 I/O 2 7 I/O 0 8 Q 0 9 10 MR GND 1 ORDERING INFORMATION SN54LSXXXJ Ceramic SN74LSXXXN Plastic SN74LSXXXDW SOIC PIN NAMES CP DS0 DS7 I/On OE1, OE2 Q0, Q7 MR S0, S1 LOADING (Note a) Clock Pulse (active positive-going edge) Input Serial Data Input for Right Shift Serial Data Input for Left Shift Parallel Data Input or Parallel Output (3-State) (Note c) 3-State Output Enable (active LOW) Inputs Serial Outputs (Note b) Asynchronous Master Reset (active LOW) Input Mode Select Inputs HIGH LOW 0.5 U.L. 0.5 U.L. 0.5 U.L. 0.5 U.L. 65 (25) U.L. 0.5 U.L. 10 U.L. 0.5 U.L. 1 U.L. 0.25 U.L. 0.25 U.L. 0.25 U.L. 0.25 U.L. 15 (7.5) U.L. 0.25 U.L. 5 (2.5) U.L. 0.25 U.L. 0.5 U.L. NOTES: a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW. b) The Output LOW drive factor is 2.5 U.L for Military (54) and 5 U.L. for Commercial (74) Temperature Ranges. c) The Output LOW drive factor is 7.5 U.L for Military (54) and 15 U.L. for Commercial (74). The Output HIGH drive factor is 25 U.L. for Military (54) and 65 U.L. for Commercial (74) Temperature Ranges. FAST AND LS TTL DATA 5-479 SN54/74LS299 LOGIC DIAGRAM FUNCTION TABLE INPUTS RESPONSE MR S1 S0 OE1 OE2 CP DS0 DS7 L L L X X H X X H H X X X H X X X X X X X X X X Asynchronous Reset; Q0 = Q7 = LOW I/O Voltage Undetermined L L L X X L L L L L X X X X X X Asynchronous Reset; Q0 = Q7 = LOW I/O Voltage LOW H H L L H H X L X L D D X X Shift Right; Dº Q0; Q0º Q1; etc. Shift Right; Dº Q0 & I/O0; Q0º O1 & I/O1; etc. H H H H L L X L X L X X D D Shift Left; Dº Q7; Q7º Q6; etc. Shift Left; Dº Q7 & I/O7; Q7º Q6 & I/O6; etc. H H H X X X X Parallel Load; I/Onº Qn H H L L L L H X X H X X X X X X Hold: I/O Voltage undetermined H L L L L X X X Hold: I/On = Qn H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial 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 Q0, Q7 54, 74 – 0.4 mA IOL Output Current — Low Q0, Q7 Q0, Q7 54 74 4.0 8.0 mA IOH Output Current — High I/O0 – I/O7 I/O0 – I/O7 54 74 – 1.0 – 2.6 mA IOL Output Current — Low I/O0 – I/O7 I/O0 – I/O7 54 74 12 24 mA FAST AND LS TTL DATA 5-480 SN54/74LS299 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Min Parameter Typ Max Unit 2.0 Test Conditions V Guaranteed Input HIGH Voltage for All Inputs V Guaranteed Input LOW Voltage for All Inputs V VCC = MIN, IIN = – 18 mA VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage Output HIGH Voltage I/O0 – I/O7 54 2.4 3.2 V VOH 74 2.4 3.1 V Output HIGH Voltage Q0, Q7 54 2.5 3.4 V VOH 74 2.7 3.4 V Output LOW Voltage I/O0 – I/O7 54, 74 0.25 0.4 V VOL IOL = 12 mA 74 0.35 0.5 V IOL = 24 mA Output LOW Voltage I/O0 – I/O7 54, 74 0.4 V VOL IOL = 4.0 mA 74 0.5 V IOL = 8.0 mA 54 0.7 74 0.8 – 0.65 – 1.5 VCC = MIN, IOH = MAX VCC = MIN, IOH = MAX VCC = VCC MIN, VIN = VIL or VIH per Truth Table VCC = VCC MIN, VIN = VIL or VIH per Truth Table IOZH Output Off Current HIGH I/O0 – I/O7 40 µA VCC = MAX, VOUT = 2.7 V IOZL Output Off Current LOW I/O0 – I/O7 – 400 µA VCC = MAX, VOUT = 0.4 V Others 20 µA S0, S1, I/O0 – I/O7 40 µA Others 0.1 mA S0, S1 0.2 mA I/O0 – I/O7 0.1 mA Others – 0.4 mA S0, S1 – 0.8 mA IIH Input HIGH Current IIL Input LOW Current IOS Short Circuit Current (Note 1) ICC VCC = MAX, VIN = 2.7 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 5.5 V VCC = MAX, VIN = 0.4 V Q0, Q7 – 20 –100 mA VCC = MAX I/O0 – I/O7 – 30 –130 mA VCC = MAX 53 mA VCC = MAX Power Supply Current Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. FAST AND LS TTL DATA 5-481 SN54/74LS299 AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V) Limits Symbol Parameter Min Typ 25 35 Max Unit Test Conditions fMAX Maximum Clock Frequency MHz tPHL tPLH Propagation Delay, Clock to Q0 or Q7 26 22 39 33 ns tPHL Propagation Delay, Clear to Q0 or Q7 27 40 ns tPHL tPLH Propagation Delay, Clock to I/O0 – I/O7 26 17 39 25 ns tPHL Propagation Delay, Clear to I/O0 – I/O7 26 40 ns tPZH tPZL Output Enable Time 13 19 21 30 ns tPHZ tPLZ Output Disable Time 10 10 15 15 ns CL = 5.0 pF Max Unit Test Conditions CL = 15 pF CL = 45 pF, RL = 667 Ω AC SETUP REQUIREMENTS (TA = 25°C, VCC = 5.0 V) Limits Symbol Parameter Min Typ tW Clock Pulse Width HIGH 25 ns tW Clock Pulse Width LOW 13 ns tW Clear Pulse Width LOW 20 ns ts Data Setup Time 20 ns ts Select Setup Time 35 ns th Data Hold Time 0 ns th Select Hold Time 10 ns trec Recovery Time 20 ns FAST AND LS TTL DATA 5-482 VCC = 5.0 V SN54/74LS299 3-STATE WAVEFORMS Figure 1 Figure 2 ≈ ≥ ≈ Figure 3 Figure 4 AC LOAD CIRCUIT SWITCH POSITIONS Ω * Includes Jig and Probe Capacitance. Figure 5 FAST AND LS TTL DATA 5-483 SYMBOL SW1 SW2 tPZH Open Closed tPZL Closed Open tPLZ Closed Closed tPHZ Closed Closed Case 751D-03 DW Suffix 20-Pin Plastic SO-20 (WIDE) "! ! " -A11 1 10 ! " # P C -T- " #! D J F K ! #! * * !" $ !" M * R X 45° " " %# G ! " ! -B- ! " 20 & ! ! ° ° ° ° ) ) ) ! Case 732-03 J Suffix 20-Pin Ceramic Dual In-Line "! ! $" '' " # !" " !" " %# 20 " 11 1 10 B L C F N H G D J M K Case 738-03 N Suffix 20-Pin Plastic ! ! ° ° ° ° ! " " ! ( " " B ! ! $ ! ( ! " # ! C -T- L K G ! & 11 E ! 10 1 #! !#! "! -A20 ! $ A " " " N M F J D " " FAST AND LS TTL DATA 5-484 * !" $ !" * ! ! ! ! ! ° ° ! ° ° Motorola reserves the right to make changes without further notice to any products herein. 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JAPAN: Nippon Motorola Ltd.; 4-32-1, Nishi-Gotanda, Shinagawa-ku, Tokyo 141, Japan. tPZL Closed Open 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 5-485