 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| SN54/74LS322A 8-BIT SHIFT REGISTERS WITH SIGN EXTEND These 8-bit shift registers have multiplexed input/output data ports to accomplish full 8-bit data handling in a single 20-pin package. Serial data may enter the shift-right register through either D0 or D1 inputs as selected by the data select pin. A serial output is also provided. Synchronous parallel loading is achieved by taking the register enable and the S / P inputs low. This places the three-state input / output ports in the data input mode. Data is entered on the low-to-high clock transition. The data extend function repeats the sign in the QA flip-flop during shifting. An overriding clear input clears the internal registers when taken low whether the outputs are enabled or off. The output enable does not affect synchronous operation of the register. 8-BIT SHIFT REGISTERS WITH SIGN EXTEND LOW POWER SCHOTTKY * * * * Multiplexed Inputs/ Outputs Provide Improved Bit Density Sign Extend Function Direct Overriding Clear 3-State Outputs Drive Bus Lines Directly (TOP VIEW) DATA SIGN VCC SELECT EXTEND D1 B/QB D/QD F/QF H/QH Q/H CLOCK 20 1 J SUFFIX CERAMIC CASE 732-03 20 19 DS G S/P 18 SE 17 D1 16 B/QB 15 D/QD 14 F/QF 13 12 11 20 1 N SUFFIX PLASTIC CASE 738-03 H/GH Q/H CK D0 A/QA C/QC E/QE G/QG OE CLR 20 1 DW SUFFIX SOIC CASE 751D-03 1 2 3 D0 4 5 6 7 8 9 10 REGISTER S/P ENABLE A/QA C/QC E/QE G/QG OUTPUT CLEAR GND ENABLE ORDERING INFORMATION SN54LSXXXJ Ceramic SN74LSXXXN Plastic SN74LSXXXDW SOIC GUARANTEED OPERATING RANGES Symbol VCC TA IOH IOL IOH IOL Supply Voltage Operating Ambient Temperature Range Output Current -- High Output Current -- Low Output Current -- High Output Current -- Low Q H Q H Q H QA- QH QA- QH QA- QH QA- QH Parameter 54 74 54 74 54, 74 54 74 54 74 54 74 Min 4.5 4.75 - 55 0 Typ 5.0 5.0 25 25 Max 5.5 5.25 125 70 - 0.4 4.0 8.0 - 1.0 - 2.6 12 24 Unit V C mA mA mA mA FAST AND LS TTL DATA 5-1 SN54/74LS322A BLOCK DIAGRAM REGISTER ENABLE G S/P SIGN EXTEND SE (1) (2) (18) (17) DATA D1 (19) SELECT DS (3) D0 Q CK DQ CLR CLOCK CLEAR OUTPUT ENABLE OE (11) (9) (8) Q CK DQ CLR FOUR IDENTICAL CHANNELS NOT SHOWN Q CK DQ CLR Q CK DQ CLR (12) QH (4) A/QA (16) B/QB (7) G/QG (13) H/QH FUNCTION TABLE INPUTS OPERATION CLEAR Clear Hold Shift Right Sign Extend Load L L H H H H H REGISTER ENABLE H X H L L L L S/P X H X H H H L SIGN EXTEND X X X H H L X DATA SELECT X X X L H X X OUTPUT ENABLE L L L L L L X CLOCK X X X INPUTS/OUTPUTS A/QA L L QA0 D0 D1 QAn a B/QB L L QB0 QAn QAn QAn b C/QC ... H/QH L L QC0 QBn QBn QBn c L L QH0 QGn QGn QGn h OUTPUT Q H L L QH0 QGn QGn QGn h When the output enable is high, the eight input/output terminals are disabled to the high-impedance state; however, sequential operation or clearing of the register is not affected. If both the register enable input and the S/P input are low while the clear input is low, the register is cleared while the eight input/output terminals are disabled to the high-impedance state. H = HIGH Level (steady state) L = LOW Level (steady state) X = Irrelevant (any input, including transitions) = Transition from LOW to HIGH level QA0...QH0 = the level of QA through QH, respectively, before the indicated steady-state conditions were established QAn...QHn = the level of QA through QH, respectively, before the most recent transition of the clock D0, D1 = the level of steady-state inputs at inputs D0 and D1 respectively a...h = the level of steady-state inputs at inputs A through H respectively FAST AND LS TTL DATA 5-2 SN54/74LS322A DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol VIH VIL VIK VOH Parameter Input HIGH Voltage 54 Input LOW Voltage 74 Input Clamp Diode Voltage Output HIGH Voltage QA- QH Output HIGH Voltage Q H Output LOW Voltage QA- QH Output LOW Voltage Q H Output Off Current HIGH QA- QH Output Off Current LOW QA- QH Other A - H, Data Select Sign Extend IIH Input HIGH Current Other Data Select Sign Extend A-H Other IIL Input LOW Current Data Select Sign Extend IOS ICC Short Circuit Current (Note 1) Power Supply Current Q H QA- QH - 20 - 30 54 74 54 74 54, 74 74 54, 74 74 2.4 2.4 2.5 2.7 - 0.65 3.2 3.2 3.4 3.4 0.25 0.35 0.4 0.5 0.4 0.5 40 - 400 20 40 60 0.1 0.2 0.3 0.1 - 0.4 - 0.8 - 1.2 -100 -130 60 0.8 - 1.5 V V V V V V V V V A A A A A mA mA mA mA mA mA mA mA mA mA VCC = MAX VCC = MAX VCC = MAX VCC = MAX, VIN = 0.4 V VCC = MAX, VIN = 5.5 V VCC = MAX, VIN = 7.0 V VCC = MAX, VIN = 2.7 V VCC = MIN, IOH = MAX IOL = 12 mA IOL = 24 mA IOL = 4.0 mA IOL = 8.0 mA VCC = VCC MIN, VIN = VIL or VIH per Truth Table VCC = VCC MIN, VIN = VIL or VIH per Truth Table VCC = MIN, IOH = MAX Min 2.0 0.7 V Typ Max Unit V Test Conditions Guaranteed Input HIGH Voltage for All Inputs Guaranteed Input LOW Voltage for All Inputs VCC = MIN, IIN = - 18 mA VOH VOL VOL IOZH IOZL VCC = MAX, VOUT = 2.7 V VCC = MAX, VOUT = 0.4 V Note 1: Not more than one output should be shorted at a time, nor for more than 1 second. FAST AND LS TTL DATA 5-3 SN54/74LS322A AC CHARACTERISTICS (TA = 25C, VCC = 5.0 V) Limits Symbol fMAX tPHL tPLH tPHL tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ Parameter Maximum Clock Frequency Propagation Delay, Clock to QH Propagation Delay, Clear to QH Propagation Delay, Clock to QA- QH Propagation Delay, Clear to QA- QH Output Enable Time Output Disable Time Min 25 Typ 35 26 22 27 22 16 22 15 15 15 15 35 33 35 33 25 35 35 35 25 25 Max Unit MHz ns ns ns ns ns ns CL = 5.0 pF CL = 45 pF, RL = 667 CL = 15 pF Test Conditions AC SETUP REQUIREMENTS (TA = 25C, VCC = 5.0 V) Limits Symbol tW tW tW ts ts th th trec Parameter Clock Pulse Width HIGH Clock Pulse Width LOW Clear Pulse Width LOW Data Setup Time Select Setup Time Data Hold Time Select Hold Time Recovery Time Min 25 15 20 20 15 0 10 20 Typ Max Unit ns ns ns ns ns ns ns ns VCC = 5.0 V Test Conditions DEFINITIONS OF TERMS SETUP TIME (ts) -- is defined as the minimum time required for the correct logic level to be present at the logic input prior to the clock transition from LOW-to-HIGH in order to be recognized and transferred to the outputs. HOLD TIME (th) -- is defined as the minimum time following the clock transition from LOW-to-HIGH that the logic level must be maintained at the input in order to ensure continued recognition. A negative HOLD TIME indicates that the correct logic level may be released prior to the clock transition from LOW-to-HIGH and still be recognized. RECOVERY TIME (trec) -- is defined as the minimum time required between the end of the reset pulse and the clock transition from LOW-to-HIGH in order to recognize and transfer HIGH Data to the Q outputs. FAST AND LS TTL DATA 5-4 |
Price & Availability of SN74LS322DW
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |