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L29C525
DEVICES INCORPORATED
Dual Pipeline Register
L29C525
DEVICES INCORPORATED
Dual Pipeline Register
DESCRIPTION
The L29C525 is a high-speed, low power CMOS pipeline register. It is pin-for-pin compatible with the AMD Am29525. The L29C525 can be configured as two independent 8-level pipelines or as a single 16-level pipeline. The configuration implemented is determined by the instruction code (I1-0) as shown in Table 2. The I1-0 instruction code controls the internal routing of data and loading of each register. For instruction I1-0 = 00 (Push A and B), data applied at the D7-0 inputs is latched into register A0 on the rising edge of CLK. The contents of A0 simultaneously move to register A1, A1 moves to A2, and so on. The contents of register A7 are wrapped back to register B0. The registers on the B side are similarly shifted, with the contents of register B7 lost. Instruction I1-0 = 01 (Push B) acts similarly to the Push A and B instruction, except that only the B side registers are shifted. The input data is applied to register B0, and the contents of register B7 are lost. The contents of the A side registers are unaffected. Instruction I1-0 = 10 (Push A) is identical to the Push B instruction, except that the A side registers are shifted and the B side registers are unaffected. Instruction I1-0 = 11 (Hold) causes no internal data movement. It is equivalent to preventing the application of a clock edge to any internal register. The contents of any of the registers is selectable at the output through the use of the S3-0 control inputs. The independence of the I and S control lines allows simultaneous reading and writing. Encoding for the S3-0 controls is given in Table 3.
FEATURES
u u u u u u u u Dual 8-Deep Pipeline Register Configurable to Single 16-Deep Low Power CMOS Technology Replaces AMD Am29525 Load, Shift, and Hold Instructions Separate Data In and Data Out Pins Three-State Outputs Package Styles Available: * 28-pin Plastic DIP * 28-pin Plastic LCC, J-Lead
L29C525 BLOCK DIAGRAM
A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7
REGISTER A0
REGISTER A1
REGISTER A2
REGISTER A3
REGISTER A4
REGISTER A5
REGISTER A6
D7-0 8 I1-0 2 CLK
REGISTER A7
MUX
Y7-0 8 OE
REGISTER B0
REGISTER B1
REGISTER B2
REGISTER B3
REGISTER B4
REGISTER B5
REGISTER B6
REGISTER B7
MUX
S3-0 4
Pipeline Registers
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L29C525
DEVICES INCORPORATED
Dual Pipeline Register
TABLE 1.
REGISTER LOAD OPERATIONS
Dual 8 Level Push B Push A Hold All Registers
Single 16 Level Push A and B
HOLD A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7 A0 A1 A2 A3 A4 A5 A6 A7
HOLD B0 B1 B2 B3 B4 B5 B6 B7
HOLD A0 A1 A2 A3 A4 A5 A6 A7
HOLD B0 B1 B2 B3 B4 B5 B6 B7
TABLE 2.
INSTRUCTION SET
Inputs I1 0 0 1 1 I0 0 1 0 1 Description Push A and B Push B Push A Hold All Registers
TABLE 3.
S3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 S2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
OUTPUT SELECT
S1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 S0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Y7-0 A0 A1 A2 A3 A4 A5 A6 A7 B0 B1 B2 B3 B4 B5 B6 B7
Mnemonics Shift LDB LDA HLD
Pipeline Registers
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L29C525
DEVICES INCORPORATED
Dual Pipeline Register
MAXIMUM RATINGS Above which useful life may be impaired (Notes 1, 2, 3, 8)
Storage temperature ........................................................................................................... -65C to +150C Operating ambient temperature ........................................................................................... -55C to +125C 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) 0C to +70C -55C to +125C 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 = -12 mA VCC = Min., IOL = 24 mA
Min 2.4
Typ
Max
Unit V
0.5 2.0 0.0 VCC 0.8 20 20 10 35 1.0
V V V A A mA mA
Ground VIN VCC (Note 12) Ground VOUT VCC (Note 12)
(Notes 5, 6) (Note 7)
Pipeline Registers
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9876543210987654321 9876543210987654321 9876543210987654321
*DISCONTINUED SPEED GRADE
1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321 1098765432109876543210987654321
Min 12 2 2 7 7
DEVICES INCORPORATED
Symbol
Symbol
SWITCHING WAVEFORMS
MILITARY OPERATING RANGE (-55C to +125C) Notes 9, 10 (ns)
COMMERCIAL OPERATING RANGE (0C to +70C) Notes 9, 10 (ns)
SWITCHING CHARACTERISTICS
tDIS
tENA
tHI
tSI
tHD
tSD
tPW
tSEL
tPD
tDIS
tENA
tHI
tSI
tHD
tSD
tPW
tSEL
tPD
CLK
D7-0
Y7-0
S3-0
OE
I1-0
Three-State Output Disable Delay (Note 11)
Three-State Output Enable Delay (Note 11)
Instruction Hold Time
Instruction Setup Time
Data Hold Time
Data 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)
Instruction Hold Time
Instruction Setup Time
Data Hold Time
Data Setup Time
Clock Pulse Width
Select to Output Delay
Clock to Output Delay
Parameter
Parameter
tSD
tSI
tSEL
tHD
tHI
tPD
tPW
4
tDIS
HIGH IMPEDANCE
tPW
Dual Pipeline Register
Min
12
2
0
7
7
25*
20
Pipeline Registers
tENA
Max
Max
13
15
25
25
13
15
20
20
L29C525-
L29C525-
03/27/2000-LDS.29C525-G
Min
Min
12
10
2 2
2
0
7
5
7
5
L29C525
20*
15
Max
Max
13 15 20 20 13 15 15 15
L29C525
DEVICES INCORPORATED
Dual Pipeline Register
NOTES
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. 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 respectively. Alternatively, a diode bridge with upper and lower current sources of IOH and IOL respectively, and a balancing voltage of 1.5 V may be used. Parasitic capacitance is 30 pF minimum, and may be distributed. 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, VTH, 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.
2. The products described by this specification include internal circuitry designed to protect the chip from damaging substrate injection currents and ac12. These parameters are only tested at cumulations of static charge. Neverthethe high temperature extreme, which is less, conventional precautions should the worst case for leakage current. be observed during storage, handling, FIGURE A. OUTPUT LOADING CIRCUIT 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. S1 As a result, care must be exercised in the 3. This device provides hard clamping of testing of this device. The following DUT IOL transient undershoot and overshoot. In- measures are recommended: VTH CL put levels below ground or above VCC IOH will be clamped beginning at -0.6 V and a. A 0.1 F 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 FIGURE B. THRESHOLD LEVELS range of -0.5 V to +7.0 V. Device opera- (DUT) as possible. Similar capacitors tENA tDIS tion will not be adversely affected, how- should be installed between device VCC OE 1.5 V 1.5 V ever, input current levels will be well in and the tester common, and device ground and tester common. excess of 100 mA. 3.5V Vth 0 Z 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 minimum 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 exter6. Tested with all outputs changing ev- nal system must supply at least that ery cycle and no load, at a 5 MHz clock much time to meet the worst-case requirements of all parts. Responses from rate. the internal circuitry are specified from 7. Tested with all inputs within 0.1 V of the point of view of the device. Output VCC or Ground, no load. delay, for example, is specified as a 8. These parameters are guaranteed maximum since worst-case operation of any device always provides data within but not 100% tested. that time. N = total number of device outputs C = capacitive load per output V = supply voltage F = clock frequency
1.5 V
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
5
03/32/2000-LDS.29C525-G
L29C525
DEVICES INCORPORATED
Dual Pipeline Register
ORDERING INFORMATION
28-pin -- 0.3" wide 28-pin
S1 S0 D0 D1 D2 D3 VCC GND D4 D5 D6 D7 I0 CLK
1 2 3 4 5 6 7 8 9 10 11 12 13 14
28 27 26 25 24 23 22 21 20 19 18 17 16 15
S2 S3 Y0 Y1 Y2 Y3 VCC GND OE Y4 Y5 Y6 Y7 I1
D2 D3 VCC GND D4 D5 D6
D1 D0 S0 S1 S2 S3 Y0
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
Y1 Y2 Y3 VCC GND OE Y4
Speed
Plastic DIP (P10)
Plastic J-Lead Chip Carrier (J4)
0C to +70C -- COMMERCIAL SCREENING
20 ns 15 ns L29C525PC20 L29C525PC15
0C to +70C -- COMMERCIAL SCREENING
L29C525JC20 L29C525JC15
-55C to +125C -- COMMERCIAL SCREENING
-55C to +125C -- COMMERCIAL SCREENING
-55C to +125C -- MIL-STD-883 COMPLIANT
-55C to +125C -- MIL-STD-883 COMPLIANT
D7 I0 CLK I1 Y7 Y6 Y5
Pipeline Registers
6
03/27/2000-LDS.29C525-G

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