ee FAIRCHILD ee SEMICONDUCTOR DM74LS469A 8-Bit Up/Down Counter General Description The LS469A is an 8-bit synchronous up/down counter with parallel load and hold capability. Three function-select inputs (LD, UD, CBI provide one of four operations which occur synchronously on the rising edge of the clock (CK). The LOAD operation loads the inputs (D7D0) into the out- put register (Q7QO). The HOLD operation holds the previ- ous value regardless of clock transitions. The INCREMENT operation adds one to the output register when the carry-in March 1998 The output register (Q7Q0) is enabled when OE is LOW, and disabled (HI-Z) when OE is HIGH. The output drivers will sink the 24 mA required for many bus-interface stan- dards. Two or more LS469A octal up/down counters may be cascaded to provide larger counters. Features @ Octal Register for general purpose interfacing applications input is TRUE (CBI = LOW), otherwise the operation is a 8 bits match byte boundaries ; HOLD. The carry-out (CBO) is True (CBO = LOW) when the = Low current PNP inputs reduce loading output register (Q7Q0) is all HIGHs, otherwise FALSE Bus-structured pinout (CBO = HIGH). The DECREMENT operation subtracts one = 3-STATE outputs from the output register when the borrow-in input is TRUE 24-pin SKINNYDIP saves space (CBI = LOW), otherwise the operation is a HOLD. The borrow-out (CBO is true (CBO = LOW) when the output reg- ister (Q7Q0) is all LOWs, otherwise FALSE (CBO = HIGH). Connection Diagram Top View tei TBO CARRY/ DATA CARRY/ BORROW out BORROW vee 'N Qo 07 02 03 o4 05 a6 a7 OUT OE 2423 22 {21 [20 |19 18 f17 }16 | 15 f14 | 13 oo ag) @2 Q3 04 O56 Q6 Q7 O} CBI B-BIT Bo jO-4 > CK UP/DOWN obtlo ol LD COUNTER wwlo- po 01 D2 03 D4 D5 D6 O07 1 fz [3 |4 [5 Je |7 fe Jo ro fat [r2 ck TH DO O01 D2 D3 04 DS 06 OF, UD GND DATA IN DS010223-1 Order Number DM54LS469AJ, DM74LS469AJ, DM74LS469AN or DM74LS469AV See Package Number J24F, N24C or V28A 1998 Fairchild Semiconductor Corporation DSo10223 www fairchildsemi.com J9]3UN0D UMOG/dN g-8 V69PS1PZINGFunction Table OE | CK | LD | UD | CBI | D7-Do aQ7-ao Operation H|x]x |x x x Z HI-Z L | t}]Ley] x x D D LOAD L |] t}]He H x Q HOLD L |] t}]He L x Q Plus 1 INCREMENT L | t]|HT]H H x Q HOLD L | t}]HIH L x QMinus 1 | DECREMENT www fairchildsemi.comAbsolute Maximum Ratings (oie 1) ESD Tolerance >1000V Supply Voltage (Vee) NN Rae leon Rzap = 1500 Input Voltage 5.5V Test Method: H Body Model Off-State Output Voltage 5.5V Tost ss, . lion: NSC SOP 5 028 Storage Temperature -65C to +150C EN Recommended Operating Conditions Symbol Parameter Military Commercial Units Min Typ Max Min Typ Max Vec Supply Voltage 45 5 5.5 4.75 5 5.25 Vv Ta Operating Free-Air Temperature -55 25 0 25 75 C To Operating Case Temperature 125 C Note 1: Absolute maximum ratings are those values beyond which the device may be permanently damaged. They do not mean that the device maybe operated at these values. Electrical Characteristics Series 24A Over Recommended Operating Temperature Range Symbol Parameter Test Conditions Min Typ Max Units Vin High Level Input Voltage (Note 2) 2 Vv ViL Low Level Input Voltage (Note 2) 0.8 Vv Vic Input Clamp Voltage Veco = Min, Il = -18 mA -0.8 -1.5 Vv Vou High Level Output Voltage Vee = Min lon = -2 MA MIL ViL = 0.8V lon = -3.2 mA COM| 2.4 2.9 Vv Vin = 2V Vor Low Level Output Voltage Vee = Min lo. = 12 mA MIL ViL = 0.8V lo. = 24 mA COM 0.3 0.5 Vv Vin = 2V lozH Off-State Output Current Veco = Max Vo = 24V 100 HA lozt (Note 3) Vi_ = 0.8V Vo = 0.4V -100 HA Vin = 2V I, Maximum Input Current Veco = Max, V, = 5.5V 4 mA liq High Level Input Current (Note 3) Voc = Max, V, = 2.4V 25 HA lie Low Level Input Current (Note 3) Voc = Max, V, = 0.4V -0.04 0.25 mA los Output Short-Circuit Current Veco = 5V Vo = OV (Note 4) -30 -70 -130 mA lec Supply Current Veco = Max 135 180 mA Note 2: These are absolute voltages with respect to the ground pin on the device and include all overshoots due to system and/or tester noise. Do not attempt to test these values without suitable equipment. Note 3: |/O leakage as the worst case of IOZX or IIX, e.g., Iy_ and IOZL. Note 4: During log measurement, only one output at a time should be grounded. Permanent damage otherwise may result. Switching Characteristics Over Recommended Operating Conditions Symbol Parameter Test Conditions Military Commercial Units Min Typ Max Min Typ Max ts Set-Up Time from Input 40 20 30 20 ns tw Width of Clock High 20 7 15 7 ns Low 35 15 25 15 ns toa CBI to CBO Delay C. = 50 pF 23 35 23 30 ns tok Clock to Output C_ = 50 pF 10 25 10 15 ns tozx Output Enable Delay C_ = 50 pF 19 35 19 30 ns tozx Output Disable Delay C, = 5 pF 15 35 15 30 ns 3 www fairchildsemi.comSwitching Characteristics (Continued) Over Recommended Operating Conditions Symbol Parameter Test Conditions Military Commercial Units Min Typ Max Min Typ Max ty Hold Time 0 -15 0 -15 ns fax Maximum 15.3 32 22.2 32 MHz Frequency Test Load Schematic of Inputs and Outputs 5 < vee EQUIVALENT INPUT TYPICAL OUTPUT ~o vee a = 6k NOM 400 NOM QUTPUT uy Az y ~ Lt = INPUT _ DS010223-2 = 4 QUTPUT MIL COML -- R1 = 390 R1 = 200 R2 = 750 R2 = 390 Test Waveforms + i DS010223-3 Set-Up and Hold ay Pulse Width ra 7x vr (SEE NOTE A) HIGH-LEVEL t ov PULSE M tset-ue t 'oLo . fo gy w OATA J \ LOW-LEVEL INPUT a " " KO, PULSE . y DS010223-6 DSo10223-4 . Enable and Disable Propagation Delay Ww ENABLE INPUT (ENABLE PIN OR INPUT) ve NORMALLY HIGH fon OUTPUT (W-PHASE (81 OPEN) ouTPUT Vou \ NORMALLY Low |Z 1.54 teuz 1 oH ouTPUT ' OUT OF PHASE (St CLOSED) yo fas OUTPUT aL ' Vo DSo10223-7 DS010223-5, Note 5: VT = 1.5V. Note 6: C, includes probe and jig capacitance. Note 7: In the examples above, the phase relationships between inputs and outputs have been chosen arbitrarily. www fairchildsemi.com 4Logic Diagram 8-Bit Up/Down Counter Dso10223-8 www fairchildsemi.comPhysical DimensiONS inches (millimeters) unless otherwise noted 1.285 yay [32.64] 24 13 riuririr PUPi Piri ri rir) NR >+| Riggs] 0.64 0.295 [7.49] MAX LITICICALILALALA LALIT LAC 0.055 1 12 R [1.4] MAX TYP 0.095 0.290-0.320 7) FT [241] MAX TYP [7.37-8.13] 0.05640.005 | Po prazeo2y TP | 4 0.180 0.225 oh MAX MAX TYP [5.72] c [4.57] \ 1 0.125 win Typ 95 45 [3.18] le~ TYP | 0.01040.002 rypalle- 0.10040.010 [0.2540.05] Ss ke TYP_,| |,_0.01840.003 [2.5440.25] [o.4620.07] |? 9.020-0.070_.. -_ 9-310-0.410_ || [0.51-1.78] [7.87-10.41] J24F (REV. H) 24-Pin Narrow Ceramic Dual-In-Line Package (J) Order Number DM54LS469AJ or DM74LS469AJ Package Number J24F 1.243~-1.270 0.092 (31.57 32.26} (2.337) MAX (2 PLS) PIN NO. 1 0.260+0.005 IDENT , (6.604+0.127) 7. { / LL) Lay a aay Lo Dol Ta Te] OPTION 2 0.062 EJECTOR PINS (1.575) OPTIONAL 0.300 0.320 won 0.040 _ (7.628.128} (1.016) 0.130+0.005 TYP (3.302 0.127) | 1 [| aoe 0.1450.200 (| } | (0508) (3.683 5.080) i, 0.009-0.015 { 7 (0-229 -0.381) "| op +55 0.065 | (1.651) .280 | +0,040 Ls 0.075 +0.015 0.018+0.003 O85 o.015 | MIN (1-905-50.381) ! (0.457 50.076) ~ {o.255 *) aa 0.100 0,010 ~ (2.5440.254) TP 24-Pin Narrow Plastic Dual-In-Line Package (N) Order Number DM74LS469AN Package Number N24C [0.125 0.145 (3.175 3.556) MIN go +4 TYP N24C (REV F} www fairchildsemi.comDM74LS469A 8-Bit Up/Down Counter Physical DimensioONS inches (millimeters) unless otherwise noted (Continued) +0,006 -0.000 +0.15 -0.00 0.450 oO [11.43] PIN #1 IDENT 1 26 [0.7440.08] 9 2" 9.050 YP > 8 [1.27] 9.300 typ _,| [7.62] ago y 0045 [4.19-4.57] 0.49040.005 typ [12.4540.13] 28-Lead Plastic Chip Carrier (V) Order Number DM74LS469AV Package Number V28A LIFE SUPPORT POLICY FAIRCHILDS PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE- VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMI- CONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or sys- 2. tems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. Fairchild Semiconductor Europe Fax: +49 (0) 1 80-530 85 86 Email: europe.suppori@nsc.com Deutsch Tel: +49 (0) 8 141-35-0 English Tel: +44 (0) 1 793-85-68-56 Italy Tel: +39 (0) 2 57 5631 Fairchild Semiconductor Corporation Americas Customer Response Center Tel: 1-888-522-5372 www. .fairchildsemi.com 45 X [1.14] 9.0170.004 +p iovessosl | [0.43+0.10] 0.165-0.180 Typ 0.045 0.4100.020 typ [10.410.51] [4 SEATING PLANE a os] MIN TYP 0.1050.015 [2.6740.38] Ca] 0.004 [0.10] V28A {REV K) A critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. National Semiconductor Japan Ltd. Tel: 81-3-5620-6175 Fax: 81-3-5620-6179 Fairchild Semiconductor Hong Kong Ltd. 13th Floor, Straight Block, Ocean Centre, 5 Canton Rd. Tsimshatsui, Kowloon Hong Kong Tel: +852 2737-7200 Fax: +852 2314-0061 Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.