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tc74vhc157f/fn/ft/fk 2006-02-01 1 toshiba cmos digital integrated circuit silicon monolithic tc74vhc157f,tc74vhc157fn,TC74VHC157FT,tc74vhc157fk quad 2-channel multiplexer the tc74vhc157 is an advanced high speed cmos quad 2-channel multiplexer fabricated with silicon gate c 2 mos technology. it achieves the high speed operation similar to equivalent bipolar schottky ttl while maintaining the cmos low power dissipation. it consists of four 2-input digital multiplexers with common select and strobe inputs. when the strobe input is held ?h? level, selection of data is inhibited and all the outputs become ?l? level. the select decoding determines whether the a or b inputs get routed to their corresponding y outputs. an input protection circuit ensures that 0 to 5.5 v can be applied to the input pins without regard to the supply voltage. this device can be used to interface 5 v to 3 v systems and on two supply systems such as battery back up. this circuit prevents device destruction due to mismatched supply and input voltages. features ? high speed: t pd = 4.1 ns (typ.) at v cc = 5 v ? low power dissipation: i cc = 4 a (max) at ta = 25c ? high noise immunity: v nih = v nil = 28% v cc (min) ? power down protection is provided on all inputs. ? balanced propagation delays: t plh ? t phl ? wide operating voltage range: v cc (opr) = 2 v to 5.5 v ? low noise: v olp = 0.8 v (max) ? pin and function compatible with 74als157 weight sop16-p-300-1.27a : 0.18 g (typ.) sop16-p-300-1.27 : 0.18 g (typ.) sol16-p-150-1.27 : 0.13 g (typ.) tssop16-p-0044-0.65a : 0.06 g (typ.) vssop16-p-0030-0.50 : 0.02 g (typ.) note: xxxfn (jedec sop) is not available in japan. tc74vhc157f tc74vhc157fn TC74VHC157FT tc74vhc157fk
tc74vhc157f/fn/ft/fk 2006-02-01 2 pin assignment iec logic symbol truth table inputs st select a b output h x x x l l l l x l l l h x h l h x l l l h x h h x: don?t care (1) (15) (2) (5) (3) 1a 2a 1b (6) (10) 3a 2b (4) (9) 1y 3y (7) (12) 2y 4y en select st 3b (14) (13) 4a 4b g1 (11) 1mux 1 4a v cc 16 4b 15 14 13 12 11 10 1 2 3 4 5 6 7 1y 2a 2b 2y gnd 4y 8 3y 9 3a 3b (top view) 1a 1b selec t st a s g b a y b a y b a y b y
tc74vhc157f/fn/ft/fk 2006-02-01 3 system diagram absolute maximum ratings (note) characteristics symbol rating unit supply voltage range v cc ? 0.5 to 7.0 v dc input voltage v in ? 0.5 to 7.0 v dc output voltage v out ? 0.5 to v cc + 0.5 v input diode current i ik ? 20 ma output diode current i ok 20 ma dc output current i out 25 ma dc v cc /ground current i cc 50 ma power dissipation p d 180 mw storage temperature t stg ? 65 to 150 c note: exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in ic performance or even destruction. 1y a b 1a 1b 4 2 3 2y 2a 2b 7 5 6 3y 3a 3b 9 11 10 4y 4a 4b 12 14 13 a b a b a b a b select st 1 15
tc74vhc157f/fn/ft/fk 2006-02-01 4 recommended operating conditions (note) characteristics symbol rating unit supply voltage v cc 2.0 to 5.5 v input voltage v in 0 to 5.5 v output voltage v out 0 to v cc v operating temperature t opr ? 40 to 85 c input rise and fall time dt/dv 0 to 100 (v cc = 3.3 0.3 v) 0 to 20 (v cc = 5 0.5 v) ns/v note: the recommended operating conditions are required to ensure the normal operation of the device. unused inputs must be tied to either vcc or gnd. electrical characteristics dc characteristics test condition ta = 25c ta = ? 40 to 85c characteristics symbol v cc (v) min typ. max min max unit high-level input voltage v ih D 2.0 3.0 to 5.5 1.50 v cc 0.7 D D D D 1.50 v cc 0.7 D D v low-level input voltage v il D 2.0 3.0 to 5.5 D D D D 0.50 v cc 0.3 D D 0.50 v cc 0.3 v i oh = ? 50 a 2.0 3.0 4.5 1.9 2.9 4.4 2.0 3.0 4.5 D D D 1.9 2.9 4.4 D D D high-level output voltage v oh v in = v ih or v il i oh = ? 4 ma i oh = ? 8 ma 3.0 4.5 2.58 3.94 D D D D 2.48 3.80 D D v i ol = 50 a 2.0 3.0 4.5 D D D 0.0 0.0 0.0 0.1 0.1 0.1 D D D 0.1 0.1 0.1 low-level output voltage v ol v in = v ih or v il i ol = 4 ma i ol = 8 ma 3.0 4.5 D D D D 0.36 0.36 D D 0.44 0.44 v input leakage current i in v in = 5.5 or gnd 0 to 5.5 D D 0.1 D 1.0 a quiescent supply current i cc v in = v cc or gnd 5.5 D D 4.0 D 40.0 a
tc74vhc157f/fn/ft/fk 2006-02-01 5 ac characteristics (input: t r = t f = 3 ns) test condition ta = 25c ta = ? 40 to 85c characteristics symbol v cc (v) c l (pf) min typ. max min max unit 15 D 6.2 9.7 1.0 11.5 3.3 0.3 50 D 8.7 13.2 1.0 15.0 15 D 4.1 6.4 1.0 7.5 propagation delay time (a, b-y) t plh t phl D 5.0 0.5 50 D 5.6 8.4 1.0 9.5 ns 15 D 8.4 13.2 1.0 15.5 3.3 0.3 50 D 10.9 16.7 1.0 19.0 15 D 5.3 8.1 1.0 9.5 propagation delay time (select-y) t plh t phl D 5.0 0.5 50 D 6.8 10.1 1.0 11.5 ns 15 D 8.7 13.6 1.0 16.0 3.3 0.3 50 D 11.2 17.1 1.0 19.5 15 D 5.6 8.6 1.0 10.0 propagation delay time ( st -y) t plh t phl D 5.0 0.5 50 D 7.1 10.6 1.0 12.0 ns input capacitance c in D D 4 10 D 10 pf power dissipation capacitance c pd (note) D 20 D D D pf note: 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 /4 (per bit) noise characteristics (input: t r = t f = 3 ns) test condition ta = 25c characteristics symbol v cc (v) typ. limit unit quiet output maximum dynamic v ol v olp c l = 50 pf 5.0 0.3 0.8 v quiet output minimum dynamic v ol v olv c l = 50 pf 5.0 ? 0.3 ? 0.8 v minimum high level dynamic input voltage v ihd c l = 50 pf 5.0 D 3.5 v maximum low level dynamic input voltage v ild c l = 50 pf 5.0 D 1.5 v
tc74vhc157f/fn/ft/fk 2006-02-01 6 input equivalent circuit input
tc74vhc157f/fn/ft/fk 2006-02-01 7 package dimensions weight: 0.18 g (typ.)
tc74vhc157f/fn/ft/fk 2006-02-01 8 package dimensions weight: 0.18 g (typ.)
tc74vhc157f/fn/ft/fk 2006-02-01 9 package dimensions (note) note: this package is not available in japan. weight: 0.13 g (typ.)
tc74vhc157f/fn/ft/fk 2006-02-01 10 package dimensions weight: 0.06 g (typ.)
tc74vhc157f/fn/ft/fk 2006-02-01 11 package dimensions weight: 0.02 g (typ.)
tc74vhc157f/fn/ft/fk 2006-02-01 12 note: lead (pb)-free packages sop16-p-300-1.27a sol16-p-150-1.27 tssop16-p-0044-0.65a vssop16-p-0030-0.50 restrictions on product use 060116eba ? the information contained herein is subject to change without notice. 021023_d ? 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 utiliz ing 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 ?handli ng guide for semiconductor devices,? or ?toshiba semiconductor reliability handbook? etc. 021023_a ? 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. 021023_b ? the products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. 060106_q ? the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba for any infringements of patents or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of toshiba or others. 021023_c ? the products described in this document are subject to the foreign exchange and foreign trade laws. 021023_e

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