SN74HC374DB

SN54HC374, SN74HC374 OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS SCLS141C – DECEMBER 1982 – REVISED JULY 1998 D D D D SN54HC374 . . . J OR W PACKAGE SN74HC374 . . . DB, DW, N, OR PW PACKAGE (TOP VIEW) Eight D-Type Flip-Flops in a Single Package High-Current 3-State True Outputs Can Drive up to 15 LSTTL Loads Full Parallel Access for Loading Package Options Include Plastic Shrink Small-Outline (DB), Small-Outline (DW), Thin Shrink Small-Outline (PW), and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) DIPs OE 1Q 1D 2D 2Q 3Q 3D 4D 4Q GND description These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC 8Q 8D 7D 7Q 6Q 6D 5D 5Q CLK 1D 1Q OE VCC 8Q SN54HC374 . . . FK PACKAGE (TOP VIEW) The eight flip-flops of the ’HC374 devices are edge-triggered D-type flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels that were set up at the data (D) inputs. 2D 2Q 3Q 3D 4D 4 3 2 1 20 19 18 5 17 6 16 7 15 8 14 9 10 11 12 13 8D 7D 7Q 6Q 6D 4Q GND CLK 5Q 5D An output-enable (OE) input places the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components. OE does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The SN54HC374 is characterized for operation over the full military temperature range of –55°C to 125°C. The SN74HC374 is characterized for operation from –40°C to 85°C. FUNCTION TABLE (each flip-flop) INPUTS OE CLK D OUTPUT Q L ↑ H H L ↑ L L L H or L X Q0 H X X Z Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright  1998, 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. On products compliant to MIL-PRF-38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1 SN54HC374, SN74HC374 OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS SCLS141C – DECEMBER 1982 – REVISED JULY 1998 logic symbol† 1 OE CLK 1D 2D 3D 4D 5D 6D 7D 8D 11 3 EN C1 2 1D 4 5 7 6 8 9 13 12 14 15 17 16 18 19 1Q 2Q 3Q 4Q 5Q 6Q 7Q 8Q † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. logic diagram (positive logic) OE CLK 1 11 C1 1D 3 1D 2 1Q To Seven Other Channels absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Input clamp current, IIK (VI < 0 or VI > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO < 0 or VO > VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±35 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±70 mA Package thermal impedance, θJA (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115°C/W DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C ‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace length of zero. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 SN54HC374, SN74HC374 OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS SCLS141C – DECEMBER 1982 – REVISED JULY 1998 recommended operating conditions (see Note 3) SN54HC374 VCC VIH Supply voltage VCC = 2 V VCC = 4.5 V High-level input voltage VCC = 6 V VCC = 2 V VIL VI VO tt Low-level input voltage NOM MAX 2 5 6 Input voltage Output voltage VCC = 2 V VCC = 4.5 V MIN NOM MAX 2 5 6 1.5 1.5 3.15 3.15 4.2 VCC = 4.5 V VCC = 6 V Input transition (rise and fall) time SN74HC374 MIN UNIT V V 4.2 0 0.5 0 0.5 0 1.35 0 1.35 0 1.8 0 1.8 0 0 0 VCC VCC 0 VCC VCC 0 1000 0 1000 0 500 0 500 V V V ns VCC = 6 V 0 400 0 400 TA Operating free-air temperature –55 125 –40 85 °C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report Implications of Slow or Floating CMOS Inputs, literature number SCBA004. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VOL VI = VCC or 0, MIN MAX SN74HC374 MIN MAX UNIT 1.998 1.9 1.9 4.4 4.499 4.4 4.4 6V 5.9 5.999 5.9 5.9 IOH = –6 mA IOH = –7.8 mA 4.5 V 3.98 4.3 3.7 3.84 6V 5.48 5.8 5.2 5.34 2V 0.002 0.1 0.1 0.1 IOL = 20 µA 4.5 V 0.001 0.1 0.1 0.1 6V 0.001 0.1 0.1 0.1 4.5 V 0.17 0.26 0.4 0.33 6V 0.15 0.26 0.4 0.33 6V ±0.1 ±100 ±1000 ±1000 nA 6V ±0.01 ±0.5 ±10 ±5 µA 8 160 80 µA 10 10 10 pF IOL = 6 mA IOL = 7.8 mA ICC Ci SN54HC374 1.9 VI = VIH or VIL VI = VCC or 0 VO = VCC or 0 TA = 25°C TYP MAX 2V VI = VIH or VIL II IOZ MIN 4.5 V IOH = –20 µA VOH VCC IO = 0 6V 2 V to 6 V POST OFFICE BOX 655303 3 • DALLAS, TEXAS 75265 V V 3 SN54HC374, SN74HC374 OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS SCLS141C – DECEMBER 1982 – REVISED JULY 1998 timing requirements over recommended operating free-air temperature range (unless otherwise noted) VCC fclock Clock frequency tw Pulse duration, CLK high or low Setup time, data before CLK↑ ↑ tsu Hold time, data after CLK↑ ↑ th TA = 25°C MIN MAX SN54HC374 MIN MAX SN74HC374 MIN MAX 2V 6 4 5 4.5 V 30 20 24 6V 35 24 28 2V 80 120 100 4.5 V 16 24 20 6V 14 20 17 2V 100 150 125 4.5 V 20 30 25 6V 17 25 21 2V 10 13 12 4.5 V 5 5 5 6V 5 5 5 UNIT MHz ns ns ns switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) fmax tpd ten tdis tt 4 CLK OE OE Any Q Any Q Any Q Any Q VCC TA = 25°C MIN TYP MAX SN54HC374 MIN MAX SN74HC374 MIN 2V 6 12 4 5 4.5 V 30 60 20 24 6V 35 70 24 MAX MHz 28 2V 63 180 270 225 4.5 V 17 36 54 45 6V 15 31 46 38 2V 60 150 225 190 4.5 V 16 30 45 38 6V 14 26 38 32 2V 36 150 225 190 4.5 V 17 30 45 38 6V 16 26 38 32 2V 28 60 90 75 4.5 V 8 12 18 15 6V 6 10 15 13 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 UNIT ns ns ns ns SN54HC374, SN74HC374 OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS SCLS141C – DECEMBER 1982 – REVISED JULY 1998 switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) fmax tpd ten tt CLK OE Any Q Any Q Any Q VCC MIN TA = 25°C TYP MAX SN54HC374 MIN MAX SN74HC374 MIN 2V 6 12 5 4.5 V 30 60 24 6V 35 70 28 MAX UNIT MHz 2V 80 230 345 290 4.5 V 22 46 69 58 6V 19 39 58 49 2V 70 200 300 250 4.5 V 25 40 60 50 6V 22 34 51 43 2V 45 210 315 265 4.5 V 17 42 63 53 6V 13 36 53 45 ns ns ns operating characteristics, TA = 25°C PARAMETER Cpd Power dissipation capacitance per flip-flop POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 TEST CONDITIONS TYP UNIT No load 100 pF 5 SN54HC374, SN74HC374 OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH 3-STATE OUTPUTS SCLS141C – DECEMBER 1982 – REVISED JULY 1998 PARAMETER MEASUREMENT INFORMATION VCC From Output Under Test CL (see Note A) PARAMETER S1 Test Point tPZH ten RL 1 kΩ tPZL tPHZ tdis S2 RL Data Input VCC 50% 10% 50% 50% 0V In-Phase Output 50% 10% tPHL 90% 90% tr tPHL Out-ofPhase Output 90% tf Closed Open Open Open VCC th 90% 90% VCC 50% 10% 0 V tf 50% 10% Output Control (Low-Level Enabling) VCC 50% 50% 0V tPZL VOH 50% 10% V OL tf Output Waveform 1 (See Note B) tPLZ ≈ VCC 50% ≈ VCC 10% VOL tPZH tPLH 50% 10% Closed VOLTAGE WAVEFORMS SETUP AND HOLD AND INPUT RISE AND FALL TIMES VCC tPLH Open tr VOLTAGE WAVEFORMS PULSE DURATIONS 50% Open 0V 0V Input Closed tsu 0V 50% Closed 50% 50% tw Low-Level Pulse Open 50 pF or 150 pF –– Reference Input VCC S2 50 pF 1 kΩ LOAD CIRCUIT 50% S1 tPLZ tpd or tt High-Level Pulse CL 50 pF or 150 pF 90% VOH VOL Output Waveform 2 (See Note B) tr VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES 50% 90% VOH ≈0V tPHZ VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES FOR 3-STATE OUTPUTS NOTES: A. CL includes probe and test-fixture capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns. D. For clock inputs, fmax is measured when the input duty cycle is 50%. E. The outputs are measured one at a time with one input transition per measurement. F. tPLZ and tPHZ are the same as tdis. G. tPZL and tPZH are the same as ten. H. tPLH and tPHL are the same as tpd. Figure 1. Load Circuit and Voltage Waveforms 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. 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