L29C521PC22

L29C520/521 DEVICES INCORPORATED 4 x 8-bit Multilevel Pipeline Register L29C520/521 DEVICES INCORPORATED 4 x 8-bit Multilevel Pipeline Register DESCRIPTION The L29C520 and L29C521 are pinfor-pin compatible with the IDT29FCT520/IDT29FCT521 and AMD Am29520/Am29521, implemented in low power CMOS. The L29C520 and L29C521 contain four registers which can be configured as two independent, 2-level pipelines or as one 4-level pipeline. The Instruction pins, I1-0, control the loading of the registers. For either device, the registers may be configured as a four-stage delay line, with data loaded into R1 and shifted sequentially through R2, R3, and R4. Also, for the L29C520, data may be loaded from the inputs into either R1 or R3 with only R2 or R4 shifting. The L29C521 differs from the L29C520 in that R2 and R4 remain unchanged during this type of data load, as shown in Tables 1 and 2. Finally, I1-0 may be set to prevent any register from changing. The S1-0 select lines control a 4-to-1 multiplexer which routes the contents of any of the registers to the Y output pins. The independence of the I and S controls allows simultaneous write and read operations on different registers. FEATURES u Four 8-bit Registers u Implements Double 2-Stage Pipeline or Single 4-Stage Pipeline Register u Hold, Shift, and Load Instructions u Separate Data In and Data Out Pins u High-Speed, Low Power CMOS Technology u Three-State Outputs u Replaces IDT29FCT520/IDT29FCT521 and AMD Am29520/Am29521 u Package Styles Available: • 24-pin PDIP • 28-pin PLCC, J-Lead TABLE 1. L29C520 INSTRUCTION TABLE I1 L L H H I0 L H L H Description D©R1 HOLD D©R1 R1©R2 HOLD R1©R2 R2©R3 D©R3 HOLD R3©R4 R3©R4 HOLD ALL REGISTERS ON HOLD TABLE 2. L29C521 INSTRUCTION TABLE I1 L L H I0 L H L H Description D©R1 HOLD D©R1 R1©R2 HOLD HOLD R2©R3 D©R3 HOLD R3©R4 HOLD HOLD L29C520/521 BLOCK DIAGRAM H ALL REGISTERS ON HOLD TABLE 3. REGISTER 1 REGISTER 2 OUTPUT SELECT S1 S0 MUX Register Selected Register 4 Register 3 Register 2 Register 1 8 D8-0 L L REG 1 REG 2 REG 3 REG 4 L H L H H MUX 8 Y7-0 OE 2 H REGISTER 3 REGISTER 4 S1-0 2 I1-0 CLK Pipeline Registers 1 08/02/2000–LDS.520/1-P L29C520/521 DEVICES INCORPORATED 4 x 8-bit Multilevel Pipeline Register MAXIMUM RATINGS Above which useful life may be impaired (Notes 1, 2, 3, 8) Storage temperature ........................................................................................................... –65°C to +150°C Operating ambient temperature ........................................................................................... –55°C to +125°C VCC supply voltage with respect to ground ............................................................................ –0.5 V to +7.0 V Input signal with respect to ground ........................................................................................ –3.0 V to +7.0 V Signal applied to high impedance output ............................................................................... –3.0 V to +7.0 V Output current into low outputs ............................................................................................................. 25 mA Latchup current ............................................................................................................................... > 400 mA OPERATING CONDITIONS To meet specified electrical and switching characteristics Mode Active Operation, Commercial Active Operation, Military Temperature Range (Ambient) 0°C to +70°C –55°C to +125°C Supply Voltage 4.75 V ≤ VCC ≤ 5.25 V 4.50 V ≤ VCC ≤ 5.50 V ELECTRICAL CHARACTERISTICS Over Operating Conditions (Note 4) Symbol VOH VOL VIH VIL IIX IOZ ICC1 ICC2 Parameter Output High Voltage Output Low Voltage Input High Voltage Input Low Voltage Input Current Output Leakage Current VCC Current, Dynamic VCC Current, Quiescent (Note 3) Test Condition VCC = Min., IOH = –15.0 mA VCC = Min., IOL = 24.0 mA Min 2.4 Typ Max Unit V 0.5 2.0 0.0 VCC 0.8 ±20 ±20 30 1.5 V V V µA µA mA mA Ground ≤ VIN ≤ VCC (Note 12) Ground ≤ VOUT ≤ VCC (Note 12) (Notes 5, 6) (Note 7) Pipeline Registers 2 08/02/2000–LDS.520/1-P 9876543210987654321 9876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 4321098765432121098765432109876543210987654321 Min DEVICES INCORPORATED COMMERCIAL OPERATING RANGE (0°C to +70°C) Notes 9, 10 (ns) SWITCHING CHARACTERISTICS 4 x 8-bit Multilevel Pipeline Register L29C520/521– 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 6543210987654321 Min Symbol Symbol SWITCHING WAVEFORMS MILITARY OPERATING RANGE (–55°C to +125°C) Notes 9, 10 (ns) tDIS tENA tHD tSD tHI tSI tPW tSEL tPD tDIS tENA tHD tSD tHI tSI tPW tSEL tPD Parameter Three-State Output Disable Delay (Note 11) Three-State Output Enable Delay (Note 11) Data Hold Time Data Setup Time Instruction Hold Time Instruction Setup Time Clock Pulse Width Select to Output Delay Clock to Output Delay Three-State Output Disable Delay (Note 11) Three-State Output Enable Delay (Note 11) Data Hold Time Data Setup Time Instruction Hold Time Instruction Setup Time Clock Pulse Width Select to Output Delay Clock to Output Delay Parameter CLK D7-0 Y7-0 S1-0 OE I1-0 tSD tSI tSEL tPD tHI 3 tHD tPW tDIS 15 15 15 5 5 30* Max 20 25 30 30 tPW HIGH IMPEDANCE L29C520/521– 24* Min Min 10 10 10 10 10 10 3 3 3 3 22 Pipeline Registers tENA Max Max 15 21 20 22 16 22 22 24 *DISCONTINUED SPEED GRADE L29C520/521 08/02/2000–LDS.520/1-P Min 5 1 5 1 7 6 2 6 2 8 14* 16* Max Max 12 15 13 14 13 16 15 16 L29C520/521 DEVICES INCORPORATED 4 x 8-bit Multilevel Pipeline Register NOTES 9. AC specifications are tested with input transition times less than 3 ns, output reference levels of 1.5 V (except tDIS test), and input levels of nominally 0 to 3.0 V. Output loading may be a resistive divider which provides for specified IOH and IOL at an output voltage of VOH min and VOL max 2. The products described by this spec- respectively. Alternatively, a diode ification include internal circuitry de- bridge with upper and lower current signed to protect the chip from damagsources of IOH and I OL respectively, ing substrate injection currents and ac- and a balancing voltage of 1.5 V may be cumulations of static charge. Neverthe- used. Parasitic capacitance is 30 pF less, conventional precautions should minimum, and may be distributed. be observed during storage, handling, and use of these circuits in order to This device has high-speed outputs caavoid exposure to excessive electrical pable of large instantaneous current stress values. pulses and fast turn-on/turn-off times. As a result, care must be exercised in the 3. This device provides hard clamping of testing of this device. The following transient undershoot and overshoot. In- measures are recommended: put levels below ground or above VCC will be clamped beginning at –0.6 V and a. A 0.1 µF ceramic capacitor should be VCC + 0.6 V. The device can withstand installed between VCC and Ground indefinite operation with inputs in the leads as close to the Device Under Test range of –0.5 V to +7.0 V. Device opera- (DUT) as possible. Similar capacitors tion will not be adversely affected, how- should be installed between device VCC ever, input current levels will be well in and the tester common, and device ground and tester common. excess of 100 mA. 4. Actual test conditions may vary from b. Ground and VCC supply planes those designated but operation is guar- must be brought directly to the DUT anteed as specified. socket or contactor fingers. 5. Supply current for a given applica- c. Input voltages should be adjusted to tion can be accurately approximated by: compensate for inductive ground and VCC noise to maintain required DUT input NCV2 F levels relative to the DUT ground pin. 4 where 10. Each parameter is shown as a minN = total number of device outputs C = capacitive load per output V = supply voltage F = clock frequency 6. Tested with all outputs changing every cycle and no load, at a 5 MHz clock rate. 7. Tested with all inputs within 0.1 V of VCC or Ground, no load. 8. These parameters are guaranteed but not 100% tested. imum or maximum value. Input requirements are specified from the point of view of the external system driving the chip. Setup time, for example, is specified as a minimum since the external system must supply at least that much time to meet the worst-case requirements of all parts. Responses from the internal circuitry are specified from the point of view of the device. Output delay, for example, is specified as a maximum since worst-case operation of any device always provides data within that time. 1. Maximum Ratings indicate stress specifications only. Functional operation of these products at values beyond those indicated in the Operating Conditions table is not implied. Exposure to maximum rating conditions for extended periods may affect reliability. 11. For the tENA test, the transition is measured to the 1.5 V crossing point with datasheet loads. For the tDIS test, the transition is measured to the ±200mV level from the measured steady-state output voltage with ±10mA loads. The balancing voltage, V TH , is set at 3.5 V for Z-to-0 and 0-to-Z tests, and set at 0 V for Zto-1 and 1-to-Z tests. 12. These parameters are only tested at the high temperature extreme, which is the worst case for leakage current. FIGURE A. OUTPUT LOADING CIRCUIT DUT S1 IOL CL IOH VTH FIGURE B. THRESHOLD LEVELS tENA OE Z 0 1.5 V 1.5 V 1.5 V tDIS 3.5V Vth VOL* 0.2 V 0 1 Z Z 1.5 V VOH* 0.2 V Z 1 0V Vth VOL* Measured VOL with IOH = –10mA and IOL = 10mA VOH* Measured VOH with IOH = –10mA and IOL = 10mA Pipeline Registers 4 08/02/2000–LDS.520/1-P L29C520/521 DEVICES INCORPORATED 4 x 8-bit Multilevel Pipeline Register L29C520 — ORDERING INFORMATION 24-pin — 0.3" wide 28-pin Speed Plastic DIP (P2) Plastic J-Lead Chip Carrier (J4) L29C520JC22 0°C to +70°C — COMMERCIAL SCREENING 22 ns L29C520PC22 –55°C to +125°C — COMMERCIAL SCREENING –55°C to +125°C — MIL-STD-883 COMPLIANT D7 CLK GND OE Y7 Y6 NC I0 I1 D0 D1 D2 D3 D4 D5 D6 D7 CLK GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC S0 S1 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 OE D1 D2 D3 D4 D5 D6 NC NC D0 I1 I0 VCC S0 S1 5 6 7 8 9 10 11 4 3 2 1 28 27 26 25 24 Top View 23 22 21 20 19 12 13 14 15 16 17 18 NC Y0 Y1 Y2 Y3 Y4 Y5 Pipeline Registers 5 08/02/2000–LDS.520/1-P 7654321098765432121098765432109876543210987654321765432109876543212109876543210987654321098765432 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 1 76543210987654321210987654321098765432109876543217654321098765432121098765432109876543210987654321 DEVICES INCORPORATED 22 ns Speed L29C520 — ORDERING INFORMATION –55°C to +125°C — MIL-STD-883 COMPLIANT –55°C to +125°C — COMMERCIAL SCREENING 0°C to +70°C — COMMERCIAL SCREENING 24-pin I0 I1 D0 D1 D2 D3 D4 D5 D6 D7 CLK GND Discontinued Package Ceramic Flatpack (M1) 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC S0 S1 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 OE 6 24-pin — 0.209" wide 4 x 8-bit Multilevel Pipeline Register I0 I1 D0 D1 D2 D3 D4 D5 D6 D7 CLK GND Discontinued Package Plastic SSOP (S1) 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 Pipeline Registers VCC S0 S1 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 OE L29C520/521 08/02/2000–LDS.520/1-P DEVICES INCORPORATED L29C521 — ORDERING INFORMATION 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 28-pin Speed 22 ns –55°C to +125°C — MIL-STD-883 COMPLIANT –55°C to +125°C — COMMERCIAL SCREENING 0°C to +70°C — COMMERCIAL SCREENING 24-pin — 0.3" wide I0 I1 D0 D1 D2 D3 D4 D5 D6 D7 CLK GND L29C521PC22 Plastic DIP (P2) 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC S0 S1 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 OE 7 4 x 8-bit Multilevel Pipeline Register D1 D2 D3 D4 D5 D6 NC Plastic J-Lead Chip Carrier (J4) Discontinued Package 11 10 9 8 7 6 5 19 12 13 14 15 16 17 18 4 3 2 Top View 1 28 27 26 25 Pipeline Registers D7 CLK GND OE Y7 Y6 NC 20 21 22 23 24 L29C520/521 NC Y0 Y1 Y2 Y3 Y4 Y5 08/02/2000–LDS.520/1-P NC D0 I1 I0 VCC S0 S1 765432109876543212109876543210987654321098765432 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 654321098765432121098765432109876543210987654321 7654321098765432121098765432109876543210987654321 7 1 DEVICES INCORPORATED Speed L29C521 — ORDERING INFORMATION –55°C to +125°C — MIL-STD-883 COMPLIANT –55°C to +125°C — COMMERCIAL SCREENING 0°C to +70°C — COMMERCIAL SCREENING 24-pin I0 I1 D0 D1 D2 D3 D4 D5 D6 D7 CLK GND Discontinued Package Ceramic Flatpack (M1) 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC S0 S1 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 OE 8 4 x 8-bit Multilevel Pipeline Register Pipeline Registers L29C520/521 08/02/2000–LDS.520/1-P