TC74VCX16841FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VCX16841FT Low-Voltage 20-Bit D-Type Latch with 3.6-V Tolerant Inputs and Outputs The TC74VCX16841FT is a high-performance CMOS 20-bit D-type latch. Designed for use in 1.8-V, 2.5-V or 3.3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. It is also designed with overvoltage tolerant inputs and outputs up to 3.6 V. The TC74VCX16841FT can be used as two 10-bit latches or one 20-bit latch. The 20 latches are transparent D-type latches. The device has noninverting data (D) inputs and provides true data at its outputs. While the latch-enable (1LE or 2LE) input is high, the Q outputs of the corresponding 10-bit latch follow the D inputs. When LE is taken low, the Q outputs are latched at the Weight: 0.25 g (typ.) levels set up at the D inputs. When the OE input is high, the outputs are in a high-impedance state. This device is designed to be used with 3-state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge. Features * Low-voltage operation: VCC = 1.8 to 3.6 V * High-speed operation: tpd = 3.0 ns (max) (VCC = 3.0 to 3.6 V) : tpd = 3.4 ns (max) (VCC = 2.3 to 2.7 V) : tpd = 6.8 ns (max) (VCC = 1.8 V) * Output current : IOH/IOL = 24 mA (min) (VCC = 3.0 V) : IOH/IOL = 18 mA (min) (VCC = 2.3 V) : IOH/IOL = 6 mA (min) (VCC = 1.8 V) * Latch-up performance: 300 mA * ESD performance: Machine model > 200 V * Package: TSSOP (thin shrink small outline package) * 3.6-V tolerant function and power-down protection provided on all inputs and outputs : Human body model > 2000 V 1 2001-10-17 TC74VCX16841FT Pin Assignment (top view) IEC Logic Symbol 1OE 1 56 1LE 1Q1 2 55 1D1 1Q2 3 54 1D2 GND 4 53 GND 1Q3 5 52 1D3 1Q4 6 51 1D4 VCC 7 50 VCC 1Q5 8 49 1D5 1Q6 9 48 1D6 1Q7 10 47 1D7 GND 11 46 GND 1Q8 12 45 1D8 1Q9 13 44 1D9 1Q10 14 43 1D10 2Q1 15 42 2D1 2Q2 16 41 2D2 2Q3 17 40 2D3 GND 18 39 GND 2Q4 19 38 2D4 2Q5 20 37 2D5 2Q6 21 36 2D6 VCC 22 35 VCC 2Q7 23 34 2D7 2Q8 24 33 2D8 GND 25 32 GND 2Q9 26 31 2D9 2Q10 27 30 2D10 2OE 29 2LE 28 1OE 1LE 2OE 2LE 1D1 1D2 1D3 1D4 1D5 1D6 1D7 1D8 1D9 1D10 2D1 2D2 2D3 2D4 2D5 2D6 2D7 2D8 2D9 2D10 2 1 56 28 29 55 54 52 51 49 48 47 45 44 43 42 41 40 38 37 36 34 33 31 30 EN2 C1 EN4 C3 1D 2 3D 4 2 3 5 6 8 9 10 12 13 14 15 16 17 19 20 21 23 24 26 27 1Q1 1Q2 1Q3 1Q4 1Q5 1Q6 1Q7 1Q8 1Q9 1Q10 2Q1 2Q2 2Q3 2Q4 2Q5 2Q6 2Q7 2Q8 2Q9 2Q10 2001-10-17 TC74VCX16841FT Truth Table (each 10-bit latch) Input OE LE D Output Q L H H H L H L L L L X Qn H X X Z X: Don't care Z: High impedance Qn: Q outputs are latched at the time when the LE input is taken to a low logic level. System Diagram 1D1 55 1D2 54 1D3 52 1D4 51 1D5 49 1D6 48 1D7 47 1D8 45 1D9 44 1D10 43 D D D D D D D D D D Q Q LE Q Q LE LE Q LE Q Q LE LE Q LE Q Q LE LE LE 1LE 56 1OE 1 2 1Q1 2D1 42 3 1Q2 2D2 41 D 2D3 40 D Q LE 5 1Q3 2D4 38 D Q 8 1Q5 2D5 37 D Q LE LE 6 1Q4 2D6 36 D Q LE 9 1Q6 2D7 34 D Q LE LE 2D8 33 D Q 12 1Q8 10 1Q7 2D9 31 D Q LE 2D10 30 D Q D Q Q LE LE 14 1Q10 13 1Q9 LE 2LE 29 2OE 28 15 2Q1 16 2Q2 17 2Q3 19 2Q4 20 2Q5 3 21 2Q6 23 2Q7 24 2Q8 26 2Q9 27 2Q10 2001-10-17 TC74VCX16841FT Maximum Ratings Characteristics Symbol Rating Unit Power supply voltage VCC -0.5 to 4.6 V DC input voltage VIN -0.5 to 4.6 V DC output voltage VOUT -0.5 to 4.6 (Note 1) -0.5 to VCC + 0.5 V (Note 2) Input diode current IIK -50 Output diode current IOK 50 DC output current IOUT 50 mA Power dissipation PD 400 mW ICC/IGND 100 mA Tstg -65 to 150 C DC VCC/ground current per supply pin Storage temperature mA (Note 3) mA Note 1: OFF state Note 2: High or low state. IOUT absolute maximum rating must be observed. Note 3: VOUT < GND, VOUT > VCC Recommended Operating Range Characteristics Power supply voltage Symbol VCC Input voltage VIN Rating Unit 1.8 to 3.6 V 1.2 to 3.6 (Note 4) -0.3 to 3.6 V 0 to 3.6 (Note 5) Output voltage Output current V VOUT 0 to VCC (Note 6) IOH/IOL Operating temperature Topr Input rise and fall time dt/dv 24 (Note 7) 18 (Note 8) 6 (Note 9) -40 to 85 0 to 10 (Note 10) mA C ns/V Note 4: Data retention only Note 5: OFF state Note 6: High or low state Note 7: VCC = 3.0 to 3.6 V Note 8: VCC = 2.3 to 2.7 V Note 9: VCC = 1.8 V Note 10: VIN = 0.8 to 2.0 V, VCC = 3.0 V 4 2001-10-17 TC74VCX16841FT Electrical Characteristics DC Characteristics (Ta = -40 to 85C, 2.7 V < VCC =< 3.6 V) Characteristics Symbol Test Condition Min Max Unit VCC (V) Input voltage H-level VIH 2.7 to 3.6 2.0 L-level VIL 2.7 to 3.6 0.8 IOH = -100 A 2.7 to 3.6 VCC - 0.2 IOH = -12 mA 2.7 2.2 IOH = -18 mA 3.0 2.4 IOH = -24 mA 3.0 2.2 IOL = 100 A 2.7 to 3.6 0.2 IOL = 12 mA 2.7 0.4 IOL = 18 mA 3.0 0.4 IOL = 24 mA 3.0 0.55 2.7 to 3.6 5.0 A 2.7 to 3.6 10.0 A 0 10.0 A VIN = VCC or GND 2.7 to 3.6 20.0 VCC < = (VIN, VOUT) < = 3.6 V 2.7 to 3.6 20.0 VIH = VCC - 0.6 V 2.7 to 3.6 750 Min Max H-level VOH VIN = VIH or VIL Output voltage L-level VOL Input leakage current IIN 3-state output OFF state current IOZ Power-off leakage current IOFF Quiescent supply current ICC Increase in ICC per input ICC VIN = VIH or VIL VIN = 0 to 3.6 V VIN = VIH or VIL VOUT = 0 to 3.6 V VIN, VOUT = 0 to 3.6 V V V A DC Characteristics (Ta = -40 to 85C, 2.3 V <= VCC <= 2.7 V) Characteristics Symbol Test Condition Unit VCC (V) Input voltage H-level VIH 2.3 to 2.7 1.6 L-level VIL 2.3 to 2.7 0.7 2.3 to 2.7 VCC - 0.2 IOH = -6 mA 2.3 2.0 IOH = -12 mA 2.3 1.8 IOH = -18 mA 2.3 1.7 IOL = 100 A 2.3 to 2.7 0.2 IOL = 12 mA 2.3 0.4 IOL = 18 mA 2.3 0.6 2.3 to 2.7 5.0 A 2.3 to 2.7 10.0 A 0 10.0 A IOH = -100 A H-level VOH VIN = VIH or VIL Output voltage L-level VOL Input leakage current IIN 3-state output OFF state current IOZ Power-off leakage current IOFF Quiescent supply current ICC VIN = VIH or VIL VIN = 0 to 3.6 V VIN = VIH or VIL VOUT = 0 to 3.6 V VIN, VOUT = 0 to 3.6 V VIN = VCC or GND 2.3 to 2.7 20.0 VCC < = (VIN, VOUT) < = 3.6 V 2.3 to 2.7 20.0 5 V V A 2001-10-17 TC74VCX16841FT DC Characteristics (Ta = -40 to 85C, 1.8 V =< VCC < 2.3 V) Characteristics Symbol Test Condition Min Max Unit VCC (V) H-level VIH 1.8 to 2.3 0.7 x VCC L-level VIL 1.8 to 2.3 0.2 x VCC VCC - 0.2 VOH IOH = -100 A 1.8 H-level IOH = -6 mA 1.8 1.4 IOL = 100 A 1.8 0.2 IOL = 6 mA 1.8 0.3 1.8 5.0 A 1.8 10.0 A 0 10.0 A VIN = VCC or GND 1.8 20.0 VCC < = (VIN, VOUT) < = 3.6 V 1.8 20.0 Input voltage VIN = VIH or VIL Output voltage VOL VIN = VIH or VIL Input leakage current IIN VIN = 0 to 3.6 V 3-state output OFF state current IOZ Power-off leakage current IOFF Quiescent supply current ICC L-level VIN = VIH or VIL VOUT = 0 to 3.6 V VIN, VOUT = 0 to 3.6 V 6 V V A 2001-10-17 TC74VCX16841FT AC Characteristics (Ta = -40 to 85C, input: tr = tf = 2.0 ns, CL = 30 pF, RL = 500 ) Characteristics Symbol Test Condition Min Max 1.8 1.5 6.8 2.5 0.2 1.0 3.4 Unit VCC (V) Propagation delay time (D-Q) tpLH tpHL Propagation delay time tpLH (LE-Q) tpHL 3-state output enable time Figure 1, Figure 2 tpZL Figure 1, Figure 2 Figure 1, Figure 3 tpZH 3-state output disable time tpLZ Figure 1, Figure 3 tpHZ Minimum pulse width (LE) Minimum setup time Minimum hold time Output to output skew tW (H) ts th Figure 1, Figure 2 Figure 1, Figure 2 tosHL 0.8 3.0 1.8 1.5 8.8 2.5 0.2 1.0 4.4 3.3 0.3 0.8 3.5 1.8 1.5 9.8 2.5 0.2 1.0 4.9 3.3 0.3 0.8 3.8 1.8 1.5 7.6 2.5 0.2 1.0 4.2 3.3 0.3 0.8 3.7 1.8 4.0 2.5 0.2 1.5 3.3 0.3 1.5 1.8 2.5 2.5 0.2 1.5 3.3 0.3 1.5 1.8 1.0 2.5 0.2 1.0 3.3 0.3 1.0 1.8 0.5 (Note 11) 2.5 0.2 0.5 3.3 0.3 0.5 Figure 1, Figure 2 tosLH 3.3 0.3 ns ns ns ns ns ns ns ns For CL = 50 pF, add approximately 300 ps to the AC maximum specification. Note 11: Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|) 7 2001-10-17 TC74VCX16841FT Dynamic Switching Characteristics (Ta = 25C, input: tr = tf = 2.0 ns, CL = 30 pF, RL = 500 ) Characteristics Symbol Test Condition Typ. Unit VCC (V) Quiet output maximum dynamic VOL Quiet output minimum dynamic VOL Quiet output minimum dynamic VOH VOLP VOLV VOHV VIH = 1.8 V, VIL = 0 V (Note 12) 1.8 0.25 VIH = 2.5 V, VIL = 0 V (Note 12) 2.5 0.6 VIH = 3.3 V, VIL = 0 V (Note 12) 3.3 0.8 VIH = 1.8 V, VIL = 0 V (Note 12) 1.8 -0.25 VIH = 2.5 V, VIL = 0 V (Note 12) 2.5 -0.6 VIH = 3.3 V, VIL = 0 V (Note 12) 3.3 -0.8 VIH = 1.8 V, VIL = 0 V (Note 12) 1.8 1.5 VIH = 2.5 V, VIL = 0 V (Note 12) 2.5 1.9 VIH = 3.3 V, VIL = 0 V (Note 12) 3.3 2.2 V V V Note 12: Parameter guaranteed by design. Capacitive Characteristics (Ta = 25C) Characteristics Symbol Test Condition Typ. Unit 6 pF 1.8, 2.5, 3.3 7 pF 1.8, 2.5, 3.3 20 pF VCC (V) Input capacitance Output capacitance Power dissipation capacitance CIN COUT CPD 1.8, 2.5, 3.3 fIN = 10 MHz (Note 13) Note 13: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: ICC (opr) = CPDVCCfIN + ICC/20 (per bit) 8 2001-10-17 TC74VCX16841FT AC Test Circuit 6.0 V or VCC x 2 Open GND RL Switch Switch tpLH, tpHL Open RL Measure CL Output Parameter tpLZ, tpZL CL = 30 pF RL = 500 @VCC = 3.3 0.3 V @VCC = 2.5 0.2 V @VCC = 1.8 V 6.0 V VCC x 2 tpHZ, tpZH GND Figure 1 AC Waveform tf 2.0 ns tr 2.0 ns Input (LE) 10% tr 2.0 ns Input (D) VM GND tf 2.0 ns tw (H) VIH 90% VM VM 10% GND ts (H) Output (Q) VIH 90% VM th (H) ts (L) th (L) VOH VM tpLH VM tpHL Figure 2 tpHL tpLH VOL tpLH, tpHL, tw, ts, th 9 2001-10-17 TC74VCX16841FT tr 2.0 ns tf 2.0 ns VIH 90% VM Output Enable Control ( OE ) 10% tpLZ GND tpZL 3.0 V or VCC Output (Q) Low to Off to Low VM tpHZ VX VOL tpZH VOH VY Output (Q) High to Off to High VM GND Outputs enabled Figure 3 Symbol Outputs enabled Outputs disabled tpLZ, tpHZ, tpZL, tpZH VCC 3.3 0.3 V 2.5 0.2 V 1.8 V VIH 2.7 V VCC VCC VM 1.5 V VCC/2 VCC/2 VX VOL + 0.3 V VOL + 0.15 V VOL + 0.15 V VY VOH - 0.3 V VOH - 0.15 V VOH - 0.15 V 10 2001-10-17 TC74VCX16841FT Package Dimensions Weight: 0.25 g (typ.) 11 2001-10-17 TC74VCX16841FT RESTRICTIONS ON PRODUCT USE 000707EBA * TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. 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