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TC74VCX16841FT 2001-10-17 1 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 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: v cc = 1.8 to 3.6 v high-speed operation: t pd = 3.0 ns (max) (v cc = 3.0 to 3.6 v) : t pd = 3.4 ns (max) (v cc = 2.3 to 2.7 v) : t pd = 6.8 ns (max) (v cc = 1.8 v) output current : i oh /i ol = 24 ma (min) (v cc = 3.0 v) : i oh /i ol = 18 ma (min) (v cc = 2.3 v) : i oh /i ol = 6 ma (min) (v cc = 1.8 v) latch-up performance: 300 ma esd performance : machine model > 200 v : human body model > 2000 v package: tssop (thin shrink small outline package) 3.6-v tolerant function and power-down protection provided on all inputs and outputs weight: 0.25 g (typ.)
TC74VCX16841FT 2001-10-17 2 pin assignment (top view) iec logic symbol 1 28 29 55 1d1 52 49 51 47 48 44 45 1d3 1d5 1d4 1d6 2d3 2d2 43 40 41 38 2d4 2d7 2d6 2d8 en2 en4 5 8 10 1q3 1q5 1q7 3 6 9 1q2 1q4 1q6 15 17 20 23 2q1 2q3 2q5 2q7 13 16 19 21 1q9 2q2 2q4 2q6 12 1q8 c3 36 37 34 33 2d5 1d10 1d8 1d7 1d9 54 1d2 42 2d1 2 1q1 14 1q10 oe 1 2d9 2d10 31 30 1d 2 24 2q8 26 2q9 27 2q10 56 c1 1le 2le 2oe 3d 4 1le 48 1d1 1d2 gnd 47 46 45 44 43 42 oe 1 1 2 3 4 5 6 7 gnd 1q3 1q4 v cc 1q5 1q6 1d3 8 9 10 1d5 1d6 1q7 41 40 39 1d4 v cc 1d7 1q2 gnd 38 1d8 1d9 1d10 37 36 35 34 33 32 gnd 11 12 13 14 15 16 17 1q10 2q1 2q2 2q3 gnd 2q4 2d1 18 19 20 gnd 2d4 2q5 31 30 29 2d2 2d3 2d5 1q8 1q9 21 2q6 v cc 2q7 22 23 24 v cc 2d7 2q8 2d6 2d8 25 gnd 26 2q9 27 2q10 28 oe 2 gnd 2d9 2d10 2le 56 55 54 53 52 51 50 49 1q1
TC74VCX16841FT 2001-10-17 3 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 28 1 1le 1q1 1d1 1q2 1d2 1q3 1d3 1q4 1d4 1q5 1d5 1q6 1d6 1q7 1d7 1q8 1d8 1q9 1d9 1q10 1d10 1oe d q le d q le d q le d q le d q le d q le d q le d q le d q le d q le 2le 2q1 2d1 2q2 2d2 2q3 2d3 2q4 2d4 2q5 2d5 2q6 2d6 2q7 2d7 2q8 2d8 2q9 2d9 2q10 2d10 2oe d q le d q le d q le d q le d q le d q le d q le d q le d q le d q le 55 54 52 51 49 48 47 45 44 43 235689 10 12 13 14 42 41 40 38 37 36 34 33 31 30 15 16 17 19 20 21 23 24 26 27 56 29
TC74VCX16841FT 2001-10-17 4 maximum ratings characteristics symbol rating unit power supply voltage v cc 0.5 to 4.6 v dc input voltage v in 0.5 to 4.6 v 0.5 to 4.6 (note 1) dc output voltage v out 0.5 to v cc 0.5 (note 2) v input diode current i ik 50 ma output diode current i ok 50 (note 3) ma dc output current i out 50 ma power dissipation p d 400 mw dc v cc /ground current per supply pin i cc /i gnd 100 ma storage temperature t stg 65 to 150 c note 1: off state note 2: high or low state. i out absolute maximum rating must be observed. note 3: v out gnd, v out v cc recommended operating range characteristics symbol rating unit 1.8 to 3.6 power supply voltage v cc 1.2 to 3.6 (note 4) v input voltage v in 0.3 to 3.6 v 0 to 3.6 (note 5) output voltage v out 0 to v cc (note 6) v 24 (note 7) 18 (note 8) output current i oh /i ol 6 (note 9) ma operating temperature t opr 40 to 85 c input rise and fall time dt/dv 0 to 10 (note 10) ns/v note 4: data retention only note 5: off state note 6: high or low state note 7: v cc 3.0 to 3.6 v note 8: v cc 2.3 to 2.7 v note 9: v cc 1.8 v note 10: v in 0.8 to 2.0 v, v cc 3.0 v
TC74VCX16841FT 2001-10-17 5 electrical characteristics dc characteristics (ta 40 to 85c, 2.7 v v cc 3.6 v) characteristics symbol test condition v cc (v) min max unit h-level v ih 2.7 to 3.6 2.0 input voltage l-level v il 2.7 to 3.6 0.8 v i oh 100 a 2.7 to 3.6 v cc 0.2 i oh 12 ma 2.7 2.2 i oh 18 ma 3.0 2.4 h-level v oh v in v ih or v il i oh 24 ma 3.0 2.2 i ol 100 a 2.7 to 3.6 0.2 i ol 12 ma 2.7 0.4 i ol 18 ma 3.0 0.4 output voltage l-level v ol v in v ih or v il i ol 24 ma 3.0 0.55 v input leakage current i in v in 0 to 3.6 v 2.7 to 3.6 5.0 a 3-state output off state current i oz v in v ih or v il v out 0 to 3.6 v 2.7 to 3.6 10.0 a power-off leakage current i off v in , v out 0 to 3.6 v 0 10.0 a v in v cc or gnd 2.7 to 3.6 20.0 quiescent supply current i cc v cc (v in , v out ) 3.6 v 2.7 to 3.6 20.0 increase in i cc per input i cc v ih v cc 0.6 v 2.7 to 3.6 750 a dc characteristics (ta 40 to 85c, 2.3 v v cc 2.7 v) characteristics symbol test condition v cc (v) min max unit h-level v ih 2.3 to 2.7 1.6 input voltage l-level v il 2.3 to 2.7 0.7 v i oh 100 a 2.3 to 2.7 v cc 0.2 i oh 6 ma 2.3 2.0 i oh 12 ma 2.3 1.8 h-level v oh v in v ih or v il i oh 18 ma 2.3 1.7 i ol 100 a 2.3 to 2.7 0.2 i ol 12 ma 2.3 0.4 output voltage l-level v ol v in v ih or v il i ol 18 ma 2.3 0.6 v input leakage current i in v in 0 to 3.6 v 2.3 to 2.7 5.0 a 3-state output off state current i oz v in v ih or v il v out 0 to 3.6 v 2.3 to 2.7 10.0 a power-off leakage current i off v in , v out 0 to 3.6 v 0 10.0 a v in v cc or gnd 2.3 to 2.7 20.0 quiescent supply current i cc v cc (v in , v out ) 3.6 v 2.3 to 2.7 20.0 a
TC74VCX16841FT 2001-10-17 6 dc characteristics (ta 40 to 85c, 1.8 v v cc 2.3 v) characteristics symbol test condition v cc (v) min max unit h-level v ih 1.8 to 2.3 0.7
v cc input voltage l-level v il 1.8 to 2.3 0.2
v cc v i oh 100 a 1.8 v cc 0.2 h-level v oh v in v ih or v il i oh 6 ma 1.8 1.4 i ol 100 a 1.8 0.2 output voltage l-level v ol v in v ih or v il i ol 6 ma 1.8 0.3 v input leakage current i in v in 0 to 3.6 v 1.8 5.0 a 3-state output off state current i oz v in v ih or v il v out 0 to 3.6 v 1.8 10.0 a power-off leakage current i off v in , v out 0 to 3.6 v 0 10.0 a v in v cc or gnd 1.8 20.0 quiescent supply current i cc v cc (v in , v out ) 3.6 v 1.8 20.0 a
TC74VCX16841FT 2001-10-17 7 ac characteristics (ta 40 to 85c, input: t r t f 2.0 ns, c l 30 pf, r l 500 ) characteristics symbol test condition v cc (v) min max unit 1.8 1.5 6.8 2.5 0.2 1.0 3.4 propagation delay time (d-q) t plh t phl figure 1, figure 2 3.3 0.3 0.8 3.0 ns 1.8 1.5 8.8 2.5 0.2 1.0 4.4 propagation delay time (le-q) t plh t phl figure 1, figure 2 3.3 0.3 0.8 3.5 ns 1.8 1.5 9.8 2.5 0.2 1.0 4.9 3-state output enable time t pzl t pzh figure 1, figure 3 3.3 0.3 0.8 3.8 ns 1.8 1.5 7.6 2.5 0.2 1.0 4.2 3-state output disable time t plz t phz figure 1, figure 3 3.3 0.3 0.8 3.7 ns 1.8 4.0 2.5 0.2 1.5 minimum pulse width (le) t w (h) figure 1, figure 2 3.3 0.3 1.5 ns 1.8 2.5 2.5 0.2 1.5 minimum setup time t s figure 1, figure 2 3.3 0.3 1.5 ns 1.8 1.0 2.5 0.2 1.0 minimum hold time t h figure 1, figure 2 3.3 0.3 1.0 ns 1.8 0.5 2.5 0.2 0.5 output to output skew t oslh t oshl (note 11) 3.3 0.3 0.5 ns for c l 50 pf, add approximately 300 ps to the ac maximum specification. note 11: parameter guaranteed by design. (t oslh |t plhm t plhn |, t oshl |t phlm t phln |)
TC74VCX16841FT 2001-10-17 8 dynamic switching characteristics (ta 25c, input: t r t f 2.0 ns, c l 30 pf, r l 500 ) characteristics symbol test condition v cc (v) typ. unit v ih 1.8 v, v il 0 v (note 12) 1.8 0.25 v ih 2.5 v, v il 0 v (note 12) 2.5 0.6 quiet output maximum dynamic v ol v olp v ih 3.3 v, v il 0 v (note 12) 3.3 0.8 v v ih 1.8 v, v il 0 v (note 12) 1.8 0.25 v ih 2.5 v, v il 0 v (note 12) 2.5 0.6 quiet output minimum dynamic v ol v olv v ih 3.3 v, v il 0 v (note 12) 3.3 0.8 v v ih 1.8 v, v il 0 v (note 12) 1.8 1.5 v ih 2.5 v, v il 0 v (note 12) 2.5 1.9 quiet output minimum dynamic v oh v ohv v ih 3.3 v, v il 0 v (note 12) 3.3 2.2 v note 12: parameter guaranteed by design. capacitive characteristics (ta 25c) characteristics symbol test condition v cc (v) typ. unit input capacitance c in 1.8, 2.5, 3.3 6 pf output capacitance c out 1.8, 2.5, 3.3 7 pf power dissipation capacitance c pd f in 10 mhz (note 13) 1.8, 2.5, 3.3 20 pf note 13: c pd 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: i cc (opr) c pd ? v cc ? f in i cc /20 (per bit)
TC74VCX16841FT 2001-10-17 9 ac test circuit ac waveform figure 1 parameter switch t plh , t phl open t plz , t pzl 6.0 v @v cc 3.3 0.3 v v cc
2 @v cc 2.5 0.2 v @v cc 1.8 v t phz , t pzh gnd 6.0 v or v cc
2 open gnd switch output measure c l 30 pf r l 500 r l r l c l figure 2 t plh , t phl , t w , t s , t h t h (l) t s (l) 10% 90% v m v ih gnd v ih gnd v oh v ol t s (h) t h (h) t f 2.0 ns t r 2.0 ns 90% v m 10% v m v m t phl t plh v m t w (h) t plh t phl v m input (le) input (d) output (q) t r 2.0 ns t f 2.0 ns
TC74VCX16841FT 2001-10-17 10 v cc symbol 3.3 0.3 v 2.5 0.2 v 1.8 v v ih 2.7 v v cc v cc v m 1.5 v v cc /2 v cc /2 v x v ol 0.3 v v ol 0.15 v v ol 0.15 v v y v oh 0.3 v v oh 0.15 v v oh 0.15 v figure 3 t plz , t phz , t pzl , t pzh 90% 10% v ol 3.0 v or v cc gnd v ih v m t phz t pzh t r 2.0 ns v m gnd v oh outputs enabled v m t plz t pzl v y outputs disabled outputs enabled output enable control ( oe ) output (q) low to off to low output (q) high to off to high v x t f 2.0 ns
TC74VCX16841FT 2001-10-17 11 package dimensions weight: 0.25 g (typ.)
TC74VCX16841FT 2001-10-17 12 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. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc.. the toshiba products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. unintended usage of toshiba products listed in this document shall be made at the customer?s own risk. the products described in this document are subject to the foreign exchange and foreign trade laws. the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba corporation for any infringements of intellectual property or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any intellectual property or other rights of toshiba corporation or others. the information contained herein is subject to change without notice. 000707eb a restrictions on product use

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