74170 ETC1

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"~~ ~T7e-Vvsl-Ooy a CONNECTION DIAGRAM PINOUT A { - o [i] [ie] vec 4X 4 REGISTER FILE >i aio. | (Wi ~ ctor With Open-Collector Outputs) ofl bay wao | rail] [73] was ; Rao [5] [12] We j DESCRIPTION — The '170 contains 16 high speed, low power, transparent ofa] Fayre D-type latches arranged as four words of four bits each, to function as a 4X 4 register file. Separate read and write inputs, both address and enable, os[z] {10} 0: allow simultaneous read and write operation. Open-collector outputs make ono[a} [S]o2 it possible to connect up to 128 outputs in a wired-AND configuration to increase the word capacity up to 512 words. Any number of these devices can be operated in pafallet to generate an n-bit length. The ’670 provides a similar function to-this device but it features 3-state outputs. - LOGIC SYMBOL * SIMULTANEOUS READ/WRITE OPERATION 1 © EXPANDABLE TO 512 WORDS OF n-BITS «TYPICAL ACCESS TIME OF 20 ns 2s 1 2 3 . * LOW LEAKAGE OPEN-COLLECTOR OUTPUTS FOR EXPANSION i : WED, be Ds Ds 4] wao - ORDERING CODE: See Section 9 13] was s—rao PIN COMMERCIAL GRADE MILITARY GRADE PKG 4 ha, PKGS Voc = +5.0 V +5%, Veo = +5.0 V +10%, RE_01 02 03 0s 2 our Ta = 0°C to +70°C Ta = -55°C to +125°C TVPE e) " Plastic nwe7 es DIP (P) A PANTOPC, TALSITOPC | | C , Voc = Pin 16 | DPW T4170DC, 74LS170DC _|64170DM, 54LS170DM GND = Pin 8 Flakpak T4170FC, 74L8170FC —|84170FM, 54LS1700M : INPUT LOADING/FAN-OUT: See Section 3 for U.L. definitions ] 54/74 (U.L.) S4/7ALS (U.L,) * PIN NAMES DESCRIPTION HIGH/LOW HIGH/LOW Di —D4 Data Inputs 1.0/1.0 0.5/0.25 WAo, WAt Write Address Inputs 1.0/1.0 0.5/0,25 WE Write Enable Input (Active LOW 1.0/1.0 1.0/0.5 Ao, RAt Read Address Inputs 1.0/1.0 0.5/0.25 O1—O4 Data Outputs oc'/10 00*/5.0 (2.5) “OC—Open Colteclor a . oY -

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4" T7Ta@-es-Oo7 ary : LOoGic DIAGRAM +} 44 IE JET ones . ; : -— 4 eT a te a te 5 ote | | RAY Do > i \\ a | | | | i i T) Bo ae tal | H ED 0 a , ! - TOT 4 : z OUUU UOUU UUUU UUUU » ED V V V V WRITE FUNCTION TABLE READ FUNCTION TABLE D INPUTS To ‘OuTPUTS FROM cfu ow Word 1 tc} con Word 1 tla Word 2 cf Ho- Word 2 ct} HoH Word 3 Lt} HoH Word 3 H] x xX _| None thot H] xX xX _| None(HIGH 2) H = HIGH Voltage Level L = LOW Voltage Level X= Immaterial

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| iu Fu revr-wy | DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) ‘ . SYMBOL PARAMETER UNITS CONDITIONS s ii ine lou Output HIGH Current [0] a0 | vA _| Voc =Min, Von =5.5V Power Supply Current 160 40 | ma {Veo = Max; Dn, WE, Icc | xm | 140 40 FE = 4.5 V; WAn, RAn =Gnd AC CHARACTERISTICS: Vcc = +5,0 V, Ta = +25°C (See Section 3 for waveforms and load configurations) H ; SYMBOL PARAMETER CL =15 pF/CL=15 pF| UNITS CONDITIONS Ru = 400 0 teu Propagation Delay” 35 | ten Ro or RAt to On 35 Figs. 3-1, 3-20 tpLH Propagation Delay 15 30 . i teLH Propagation Delay 35 4 3c 4 tPLH Propagation Delay 35 sos. 3: EE *Measured at least 25 ns after entry of new data at selected location. AC OPERATING REQUIREMENTS: Vcc = +5.0 V, Ta = +25°C SYMBOL PARAMETER Salva | SA/74LS_| Units CONDITIONS . i ‘ Setup Time HIGH or LOW Dn to rising WE tl Hold Time HIGH or LOW ‘8 i * Dn to rising WE j Setup Time HIGH or LOW j th Hold Time HIGH or LOW Wan to rising WE tw (D WE orREPulsewiathtow | 2 | 2 | ns | ; — rt AQ cL tof we wn \\ fons Sv tortsr . Fig. @ 1278 6-13 4246 SY1TO-30