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SN74AVC16722 22-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
SCES166H - DECEMBER 1998 - REVISED JUNE 2000
D D D D
Member of the Texas Instruments Widebus TM Family EPICTM (Enhanced-Performance Implanted CMOS) Submicron Process DOCTM (Dynamic Output Control) Circuit Dynamically Changes Output Impedance, Resulting in Noise Reduction Without Speed Degradation Dynamic Drive Capability Is Equivalent to Standard Outputs With IOH and IOL of 24 mA at 2.5-V VCC
D D D D
Overvoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode Data Communications Ioff Supports Partial-Power-Down Mode Operation Latch-Up Performance Exceeds 100 mA Per JESD 78, Class I Packaged in Thin Shrink Small-Outline Package
description
A Dynamic Output Control (DOC) circuit is implemented, which, during the transition, initially lowers the output impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1 shows typical VOL vs IOL and VOH vs IOH curves to illustrate the output impedance and drive capability of the circuit. At the beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is equivalent to a high-drive standard-output device. For more information, refer to the TI application reports, AVC Logic Family Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOCTM) Circuitry Technology and Applications, literature number SCEA009.
3.2 2.8 VOL - Output Voltage - V 2.4 2.0 1.6 VCC = 2.5 V 1.2 VCC = 1.8 V 0.8 0.4 0 17 34 51 68 85 102 119 IOL - Output Current - mA 136 153 170 VCC = 3.3 V TA = 25C Process = Nominal - Output Voltage - V TA = 25C Process = Nominal
2.8 2.4 2.0 1.6 1.2 0.8
V
OH
VCC = 3.3 V 0.4
VCC = 2.5 V VCC = 1.8 V -32 -16 0
-160 -144 -128 -112 -96 -80 -64 -48 IOH - Output Current - mA
Figure 1. Output Voltage vs Output Current This 22-bit flip-flop is operational at 1.2-V to 3.6-V VCC, but is designed specifically for 1.65-V to 3.6-V VCC operation. The 22 flip-flops of the SN74AVC16722 are edge-triggered D-type flip-flops with clock-enable (CLKEN) input. On the positive transition of the clock (CLK) input, the device stores data into the flip-flops if CLKEN is low. If CLKEN is high, no data is stored. A buffered output-enable (OE) input places the 22 outputs in either a normal logic state (high or low) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. OE does not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.
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. DOC, EPIC, and Widebus are trademarks of Texas Instruments.
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.
Copyright (c) 2000, Texas Instruments Incorporated
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SN74AVC16722 22-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
SCES166H - DECEMBER 1998 - REVISED JUNE 2000
description (continued)
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. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. The SN74AVC16722 is characterized for operation from -40C to 85C.
terminal assignments
DGG PACKAGE (TOP VIEW)
OE Q1 Q2 GND Q3 Q4 VCC Q5 Q6 Q7 GND Q8 Q9 Q10 Q11 Q12 Q13 GND Q14 Q15 Q16 VCC Q17 Q18 GND Q19 Q20 VCC Q21 Q22 GND NC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
CLK D1 D2 GND D3 D4 VCC D5 D6 D7 GND D8 D9 D10 D11 D12 D13 GND D14 D15 D16 VCC D17 D18 GND D19 D20 VCC D21 D22 GND CLKEN
NC - No internal connection
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SN74AVC16722 22-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
SCES166H - DECEMBER 1998 - REVISED JUNE 2000
FUNCTION TABLE (each flip-flop) INPUTS OE L L L L H CLKEN H L L L X CLK X L or H X D X H L X X OUTPUT Q Q0 H L Q0 Z
logic diagram (positive logic)
1 OE 64 CLK 33 CLKEN 63 D1 1D CE C1 2 Q1
To 21 Other Channels
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 4.6 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 4.6 V Voltage range applied to any output in the high-impedance or power-off state, VO (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to 4.6 V Voltage range applied to any output in the high or low state, VO (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5 V to VCC + 0.5 V Input clamp current, IIK (VI < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50 mA Output clamp current, IOK (VO < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50 mA Continuous output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Continuous current through each VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA Package thermal impedance, JA (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65C to 150C
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 negative-voltage ratings may be exceeded if the input and output current ratings are observed. 2. The output positive-voltage rating may be exceeded up to 4.6 V maximum if the output current rating is observed. 3. The package thermal impedance is calculated in accordance with JESD 51.
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SN74AVC16722 22-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
SCES166H - DECEMBER 1998 - REVISED JUNE 2000
recommended operating conditions (see Note 4)
MIN VCC Supply voltage Operating Data retention only VCC = 1.2 V VCC = 1.4 V to 1.6 V VIH High-level input voltage VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 3 V to 3.6 V VCC = 1.2 V VCC = 1.4 V to 1.6 V VIL Low-level input voltage VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 3 V to 3.6 V 0 Active state 3-state VCC = 1.4 V to 1.6 V VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 3 V to 3.6 V VCC = 1.4 V to 1.6 V VCC = 1.65 V to 1.95 V VCC = 2.3 V to 2.7 V VCC = 3 V to 3.6 V 0 0 1.4 1.2 VCC 0.65 x VCC 0.65 x VCC 1.7 2 GND 0.35 x VCC 0.35 x VCC 0.7 0.8 3.6 VCC 3.6 -2 -4 -8 -12 2 4 8 12 mA mA V V V V MAX 3.6 UNIT V
VI VO
Input voltage Output voltage
IOHS
Static high level output current high-level
IOLS
Static low-level output current low level
Input transition rise or fall rate VCC = 1.4 V to 3.6 V 5 ns/V TA Operating free-air temperature -40 85 C Dynamic drive capability is equivalent to standard outputs with IOH and IOL of 24 mA at 2.5-V VCC. See Figure 1 for VOL vs IOL and VOH vs IOH characteristics. Refer to the TI application reports, AVC Logic Family Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC TM) Circuitry Technology and Applications, literature number SCEA009. NOTE 4: 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.
t/v
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SN74AVC16722 22-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
SCES166H - DECEMBER 1998 - REVISED JUNE 2000
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS IOHS = -100 A IOHS = -2 mA, VOH IOHS = -4 mA, IOHS = -8 mA, IOHS = -12 mA, IOLS = 100 A VOL IOLS = 2 mA, IOLS = 4 mA, IOLS = 8 mA, IOLS = 12 mA, II Ioff IOZ ICC Control inputs Ci Data inputs Co Out uts Outputs VO = VCC or GND VI = VCC or GND VI = VCC or GND VI or VO = 3.6 V VO = VCC or GND VI = VCC or GND, IO = 0 VCC 1.4 V to 3.6 V 1.4 V 1.65 V 2.3 V 3V 1.4 V to 3.6 V VIL = 0.49 V VIL = 0.57 V VIL = 0.7 V VIL = 0.8 V 1.4 V 1.65 V 2.3 V 3V 3.6 V 0 3.6 V 3.6 V 2.5 V 3.3 V 2.5 V 3.3 V 2.5 V 3.3 V 4 4 2 2 6.5 6 pF F pF MIN VCC-0.2 1.05 1.2 1.75 2.3 0.2 0.4 0.45 0.55 0.7 2.5 10 10 40 A A A A V V TYP MAX UNIT
VIH = 0.91 V VIH = 1.07 V VIH = 1.7 V VIH = 2 V
Typical values are measured at TA = 25C.
timing requirements over recommended operating free-air temperature range (unless otherwise noted) (see Figures 2 through 5)
VCC = 1.2 V MIN fclock tw tsu th Clock frequency Pulse duration, CLK high or low Setup time Hold time Data before CLK CLKEN before CLK Data after CLK CLKEN after CLK 12.8 3.5 0 2.1 8.3 2 0 1.6 6.2 5.7 1.6 0 1.3 MAX VCC = 1.5 V 0.1 V MIN MAX VCC = 1.8 V 0.15 V MIN MAX 80 3.5 3.5 1.4 0 1.2 VCC = 2.5 V 0.2 V MIN MAX 140 2.8 2.5 1.4 0 1.2 VCC = 3.3 V 0.3 V MIN MAX 175 MHz ns ns ns UNIT
switching characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figures 2 through 5)
PARAMETER fmax tpd ten tdis FROM (INPUT) TO (OUTPUT) VCC = 1.2 V TYP 7.7 11.2 6.8 VCC = 1.5 V 0.1 V MIN 1.5 2.5 1.9 MAX 6.3 10.6 7.2 VCC = 1.8 V 0.15 V MIN 1.5 2.4 1.9 MAX 80 CLK OE OE Q Q Q 5.4 9.5 7 1 1.8 1.2 VCC = 2.5 V 0.2 V MIN MAX 140 3.3 6 3.6 0.7 1.4 1.2 VCC = 3.3 V 0.3 V MIN MAX 175 2.6 4.3 3.4 MHz ns ns ns UNIT
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SN74AVC16722 22-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
SCES166H - DECEMBER 1998 - REVISED JUNE 2000
operating characteristics, TA = 25C
PARAMETER Cpd d Power dissipation capacitance Outputs enabled Outputs disabled TEST CONDITIONS CL = 0 0, f = 10 MHz VCC = 1.8 V TYP 88 60 VCC = 2.5 V TYP 98 64 VCC = 3.3 V TYP 110 79 UNIT pF
PARAMETER MEASUREMENT INFORMATION VCC = 1.2 V AND 1.5 V 0.1 V
2 x VCC From Output Under Test CL = 15 pF (see Note A) 2 k S1 Open GND 2 k TEST tpd tPLZ/tPZL tPHZ/tPZH S1 Open 2 x VCC GND
LOAD CIRCUIT tw Timing Input tsu Data Input VCC/2 VCC VCC/2 0V th VCC VCC/2 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES Output Control (low-level enabling) tPZL VCC Input VCC/2 tPLH VCC/2 0V tPHL VOH Output VCC/2 VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VCC/2 VOL Output Waveform 2 S1 at GND (see Note B) Output Waveform 1 S1 at 2 x VCC (see Note B) tPZH VCC Input VCC/2 VOLTAGE WAVEFORMS PULSE DURATION VCC/2 0V
VCC VCC/2 VCC/2 0V tPLZ VCC VCC/2 VOL + 0.1 V VOL tPHZ VOH VOH - 0.1 V 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES
VCC/2
NOTES: A. CL includes probe and jig 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. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 , tr 2 ns, tf 2 ns. D. The outputs are measured one at a time with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd.
Figure 2. Load Circuit and Voltage Waveforms
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SN74AVC16722 22-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
SCES166H - DECEMBER 1998 - REVISED JUNE 2000
PARAMETER MEASUREMENT INFORMATION VCC = 1.8 V 0.15 V
2 x VCC From Output Under Test CL = 30 pF (see Note A) 1 k S1 Open GND 1 k TEST tpd tPLZ/tPZL tPHZ/tPZH S1 Open 2 x VCC GND
LOAD CIRCUIT tw Timing Input tsu Data Input VCC/2 VCC VCC/2 0V th VCC VCC/2 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES Output Control (low-level enabling) tPZL VCC Input VCC/2 tPLH VCC/2 0V tPHL VOH Output VCC/2 VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VCC/2 VOL Output Waveform 2 S1 at GND (see Note B) Output Waveform 1 S1 at 2 x VCC (see Note B) tPZH VCC Input VCC/2 VOLTAGE WAVEFORMS PULSE DURATION VCC/2 0V
VCC VCC/2 VCC/2 0V tPLZ VCC VCC/2 VOL + 0.15 V VOL tPHZ VOH VOH - 0.15 V 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES
VCC/2
NOTES: A. CL includes probe and jig 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. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 , tr 2 ns, tf 2 ns. D. The outputs are measured one at a time with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd.
Figure 3. Load Circuit and Voltage Waveforms
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SN74AVC16722 22-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
SCES166H - DECEMBER 1998 - REVISED JUNE 2000
PARAMETER MEASUREMENT INFORMATION VCC = 2.5 V 0.2 V
500 S1 2 x VCC Open GND 500 TEST tpd tPLZ/tPZL tPHZ/tPZH S1 Open 2 x VCC GND
From Output Under Test CL = 30 pF (see Note A)
LOAD CIRCUIT tw Timing Input tsu Data Input VCC/2 VCC VCC/2 0V th VCC VCC/2 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES Output Control (low-level enabling) tPZL VCC Input VCC/2 tPLH VCC/2 0V tPHL VOH Output VCC/2 VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VCC/2 VOL Output Waveform 2 S1 at GND (see Note B) Output Waveform 1 S1 at 2 x VCC (see Note B) tPZH VCC Input VCC/2 VOLTAGE WAVEFORMS PULSE DURATION VCC/2 0V
VCC VCC/2 VCC/2 0V tPLZ VCC VCC/2 VOL + 0.15 V VOL tPHZ VOH VOH - 0.15 V 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES
VCC/2
NOTES: A. CL includes probe and jig 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. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 , tr 2 ns, tf 2 ns. D. The outputs are measured one at a time with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd.
Figure 4. Load Circuit and Voltage Waveforms
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SN74AVC16722 22-BIT FLIP-FLOP WITH 3-STATE OUTPUTS
SCES166H - DECEMBER 1998 - REVISED JUNE 2000
PARAMETER MEASUREMENT INFORMATION VCC = 3.3 V 0.3 V
2 x VCC From Output Under Test CL = 30 pF (see Note A) 500 S1 Open GND 500 TEST tpd tPLZ/tPZL tPHZ/tPZH S1 Open 2 x VCC GND
LOAD CIRCUIT
tw VCC
Timing Input tsu Data Input VCC/2
VCC VCC/2 0V th VCC VCC/2 0V VOLTAGE WAVEFORMS SETUP AND HOLD TIMES
Input
VCC/2
VCC/2 0V
VOLTAGE WAVEFORMS PULSE DURATION
Output Control (low-level enabling) tPZL
VCC VCC/2 VCC/2 0V tPLZ VCC VCC/2 VOL + 0.3 V VOL tPHZ VCC/2 VOH VOH - 0.3 V 0V VOLTAGE WAVEFORMS ENABLE AND DISABLE TIMES
VCC Input VCC/2 tPLH VCC/2 VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES VCC/2 0V tPHL VOH Output VCC/2 VOL
Output Waveform 1 S1 at 2 x VCC (see Note B) tPZH Output Waveform 2 S1 at GND (see Note B)
NOTES: A. CL includes probe and jig 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. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 , tr 2 ns, tf 2 ns. D. The outputs are measured one at a time with one transition per measurement. E. tPLZ and tPHZ are the same as tdis. F. tPZL and tPZH are the same as ten. G. tPLH and tPHL are the same as tpd.
Figure 5. Load Circuit and Voltage Waveforms
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Copyright (c) 2000, Texas Instruments Incorporated

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