SN54/74LS173A 4-BIT D-TYPE REGISTER WITH 3-STATE OUTPUTS The SN54 / 74LS173A is a high-speed 4-Bit Register featuring 3-state outputs for use in bus-organized systems. The clock is fully edge-triggered allowing either a load from the D inputs or a hold (retain register contents) depending on the state of the Input Enable Lines (IE1, IE2). A HIGH on either Output Enable line (OE1, OE2) brings the output to a high impedance state without affecting the actual register contents. A HIGH on the Master Reset (MR) input resets the Register regardless of the state of the Clock (CP), the Output Enable (OE1, OE2) or the Input Enable (IE1, IE2) lines. • Fully Edge-Triggered • 3-State Outputs • Gated Input and Output Enables • Input Clamp Diodes Limit High-Speed Termination Effects 4-BIT D-TYPE REGISTER WITH 3-STATE OUTPUTS LOW POWER SCHOTTKY J SUFFIX CERAMIC CASE 620-09 16 1 CONNECTION DIAGRAM DIP (TOP VIEW) N SUFFIX PLASTIC CASE 648-08 16 1 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. D SUFFIX SOIC CASE 751B-03 16 1 ORDERING INFORMATION PIN NAMES LOADING (Note a) MR Q0 – Q3 Data Inputs Input Enable (Active LOW) Output Enable (Active LOW) Inputs Clock Pulse (Active HIGH Going Edge) Input Master Reset Input (Active HIGH) Outputs (Note b) Ceramic Plastic SOIC LOW HIGH D0 – D3 IE1 – IE2 OE1 – OE2 CP SN54LSXXXJ SN74LSXXXN SN74LSXXXD 0.5 U.L. 0.5 U.L. 0.5 U.L. 0.5 U.L. 0.25 U.L. 0.25 U.L. 0.25 U.L. 0.25 U.L. 0.5 U.L. 65 (25) U.L. 0.25 U.L. 15 (7.5) 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) b. Temperature Ranges. LOGIC SYMBOL FAST AND LS TTL DATA 5-316 SN54/74LS173A LOGIC DIAGRAM TRUTH TABLE MR CP IE1 IE2 Dn Qn H L L L L L x L x x H x L L x x x H L L x x x x L H L Qn Qn Qn L H H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial When either OE1, or OE2 are HIGH, the output is in the off state (High Impedance); however this does not affect the contents or sequential operation of the register. 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 54 74 – 1.0 – 2.6 mA IOL Output Current — Low 54 74 12 24 mA FAST AND LS TTL DATA 5-317 SN54/74LS173A 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 VOL Output LOW Voltage IOZH IOZL Typ Max Unit 2.0 54 0.7 74 0.8 – 0.65 – 1.5 Test Conditions V Guaranteed Input HIGH Voltage for All Inputs V Guaranteed Input LOW Voltage for All Inputs V VCC = MIN, IIN = – 18 mA 54 2.4 3.4 V 74 2.4 3.1 V VCC = MIN, IOH = MAX, VIN = VIH or VIL per Truth Table VCC = VCC MIN, VIN = VIL or VIH per Truth Table 54, 74 0.25 0.4 V IOL = 12 mA 74 0.35 0.5 V IOL = 24 mA Output Off Current HIGH 20 µA VCC = MAX, VO = 2.7 V Output Off Current LOW – 20 µA VCC = MAX, VO = 0.4 V 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 – 130 mA VCC = MAX 30 mA VCC = MAX IIH Input HIGH Current IIL Input LOW Current IOS Short Circuit Current (Note 1) ICC Power Supply Current – 30 Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. AC CHARACTERISTICS (TA = 25°C) Limits Symbol Parameter Min Typ 30 50 Max Unit Test Conditions fMAX Maximum Input Clock Frequency MHz tPLH tPHL Propagation Delay, Clock to Output 17 22 25 30 ns tPHL Propagation Delay, MR to Output 26 35 ns tPZH tPZL Output Enable Time 15 18 23 27 ns tPLZ tPHZ Output Disable Time 11 11 17 17 ns CL = 5.0 pF, RL = 667 Ω Max Unit Test Conditions VCC = 5.0 V CL = 45 pF, RL = 667 Ω AC SETUP REQUIREMENTS (TA = 25°C) Limits Symbol Parameter Min Typ tW Clock or MR Pulse Width 20 ns ts Data Enable Setup Time 35 ns ts Data Setup Time 17 ns th Hold Time, Any Input 0 ns trec Recovery Time 10 ns FAST AND LS TTL DATA 5-318 VCC = 5.0 V SN54/74LS173A AC WAVEFORMS #( ' '& $% '! '& ' '! '% ' ' ' Figure 1 Figure 2 ' ' ' ' Figure 3 Figure 4 AC LOAD CIRCUIT SWITCH POSITIONS SYMBOL SW1 SW2 tPZH Open Closed tPZL Closed Open tPLZ Closed Closed tPHZ Closed Closed " Ω * Includes Jig and Probe Capacitance. Figure 5 FAST AND LS TTL DATA 5-319 ≥ ≈ 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 5-320 & # ) !" $ !" ) -T $ " " C F & 8 E ! ! ! " " -B1 & 9 * * ! ! ! ! * * ! ° ° ! ° ° Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. 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 5-321