104 547 T/T4ATT 4-Bit Bistable Latch - Schottky TTL High-Speed TTL Low-Power Schottky TTL Standard TTL Low-Power TTL Package Packag | Package Package P. . . . . . jackage Device Type | Cl Device Type Device Type Device Type coe | Device Typel us ci PiMicr c|PlM cj Pi Mice c| PI Mice ~ [Cc] P| MCF TI }_____-.._+ SNS4LST4 Wi] SNS477 wot SNSAL77 | Te { SNT4L77 To M o FAIRCHILD L ene Ge Ge { | FM5477_/ F M9377 7 FC7477 5 FO MOTOROLA 4} + } | SN7477 N Ss Cc | OMS4L S77 Il aa DM74L S77 1 PHILIPS + $5477 wa Tics -}-- SIGNETICS Nar Wa SIEMENS - Fuitsy = ~_-1|+-] 1] HITACHE = |} --} 4 ] MTSUBISHi T | NEC 1 | al _t. | TOSHIBA 4 id al Electrical Characteristics SN54LS77 absolute maximum ratings over operating Function Table free-air temperature range | Supply voltage. Voo dV Operating tree-ar | SNSHLS | BHC t0 128C "TT 'LIT (Each Latch) Input voltage IV vemperature range [ INPUTS OUTPUTS Interemrtter vollage (see Note | ) | _8.8V Storage temperature range 65C to 150C D G Q a recommended operating conditions Loo t oH S77 4 4 4 L SN54L. = UNIT MIN NOM MAX | MIN NOM MAX x Lt A Ao. Supply voltage, Voc 4.5 5 5.5 Vv H=high level, L=towlevel, X= irrelevant High-level cutput current. lo 400 ah Qg=the level of Q before the high-to-low transition of G Low-level output current, lou. 4 mA Width of enabling pulse. lw 20 ns Data hold ume. thotd 0 as Setup time. tsetup 20 ns Operating free-air temperatuture, Ta 55 125[ c electrical chareristics over recommended operating free-air temperature range | _PARAMETER* ss|_Ss TEST CONDITIONSt | MIN. TYP$ MAX | UNIT Functional Block Diagram (each latch) Vin High-level input voltage | 2 v Vib Low-level input voltage 0.8 v vy Input clamp voltage VoocNIN. - = 18mA 4. v - VYoo=MIN. ViH=2, Q v High-level output voltage . . 3.5 v 1 on ranrrevet ouvoun wel Vi =0.8V. lon = 400A zs * bw Other VoG=MIN, Vin= 2. . Vot Low-level output voltage ce i 0.25 0.4[ V Laton _. ViL=O8V. loi = 4mA input current al maximum Voc=MAX, 1D input ON) a u input voltage Vi=IV YG input 0.4 Oo t I High-level input current =44 Vgg=MAX, Vir2.tV 20) UA ENABLE DATA, G input 80 - 17, L717 4-BIT BISTABLE LATCH ie Low-level input Pr yOG=MAX, Vi=0.4V mA current D input | los Short-circuit output current @ Voc =MAX SN5A 20 ~100} mA DATA ~ v = MAX, oc Supply current ce SNS# 6.3 13} mA See Note 2 To > 0 =5V u 19] ns from D to output Q vee of m OTHER : Ta=2sc, 9 ty ns LATCH fom & tout 0 Cy =150F, 10 i] rom G to oulpu AL =2kQ i018 ENABLE Pin Assignment (Top View) LS7] 4-BIT BISTABLE LATCH 19 2g MREGND Ne 39 40 fal bs fz) fil fol fatts oO) La E oF lo 9 Qn P NOTES: |. This is the voltage between two emitters of a muiltiple-emitter input transistor. 1 ay oof ter 7. 1D 2D EKABLE Voc ap 4D NG 2. iggis tested with all meut grounded and all outputs open. Tenis: met hrc te t For Tall conditions shown as MIN or MAX, use the appropriate value typical values at Vog = 5V. Ta=25C @Nat more than one output should be shorted at a time * tp_H= propagation delay time, low-to-high-levei output tPHL =propagation delay time, high-to-low-low-level output under recommended operating conditions