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SM5839A
NIPPON PRECISION CIRCUITS INC.
High-Speed Variable-Length Shift Register
OVERVIEW
The SM5839A is an 8-bit variable-length shift resister. The input pins can be configured to function as a 2 to 128-step shift resister. The shift clock has a maximum frequency of 54 MHz, making it ideal for high-speed digital signal processing.
PACKAGE DIMENSIONS
Unit: mm
28-pin DIP (SM5839AP)
13.72 0.1
15.56 0.3
FEATURES
s
s s s s
s
s s s
PINOUT
Top view
0.5755 TYP. 9.8 0.2
5.6 0.2 7.6 0.2
2 to 128-step selectable variable-length shift resister Static circuitry 8-bit (byte) word length Selectable circulating/non-circulating storage 54 MHz maximum operating clock frequency (standard-voltage specification) Supply voltage * 5.0 0.5 V (standard-voltage specification) * 2.7 to 4.5 V (low-voltage specification) TTL-compatible input/outputs Molybdenum-gate CMOS Package * 28-pin DIP (SM5839AP) * 28-pin VSOP (SM5839AV)
1.52 0.05
3.81 0.1
0.83 0.3
3.18 0.1
2.54
0.46 0.05
28-pin VSOP (SM5839AV)
4.64 0.3
0 10 + 0.1 0.15 - 0.05 0.10 0.05 1.15 0.1 + 0.1 0.22 - 0.05 0.5 0.2
0.65
DIN0 DIN1 DIN2 DIN3 DIN4 DIN5 DIN6 DIN7 S6
1 2 3 4
28 27 26 25
VDD ENRC OE DOUT0 DOUT1 DOUT2 DOUT3 DOUT4 DOUT5 DOUT6 DOUT7 S0 S1 S2
ORDERING INFORMATION
Device SM5839AP SM5839AV Package 28-pin DIP 28-pin VSOP
5 6 7 8 9
24 23 22 21 20 19 18 17 16 15
S5 10 S4 11 S3 12 CLK 13
VSS 14
NIPPON PRECISION CIRCUITS--1
0.25 0.05
36.83 0.1
16.38 0.6
SM5839A
SM5839A
BLOCK DIAGRAM
ENRC VDD
8
8
Variable shift register block
8 Output buffer
8
DOUT0 to DOUT7
DIN0 to DIN7
8
Multiplexer
Write address pointer
Read address pointer
CLK
7
VSS
S0 to S6
OE
PIN DESCRIPTION
Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Name DIN0 DIN1 DIN2 DIN3 DIN4 DIN5 DIN6 DIN7 S6 S5 S4 S3 CLK VSS S2 S1 S0 DOUT7 DOUT6 DOUT5 I/O1 Ip Ip Ip Ip Ip Ip Ip Ip Ip Ip Ip Ip I - Ip Ip Ip O O O Data input 0 Data input 1 Data input 2 Data input 3 Data input 4 Data input 5 Data input 6 Data input 7 Register length select control 6 Register length select control 5 Register length select control 4 Register length select control 3 Clock input Ground Register length select control 2 Register length select control 1 Register length select control 0 Data output 7 Data output 6 Data output 5 Description
NIPPON PRECISION CIRCUITS--2
SM5839A
Number 21 22 23 24 25 26 27 28 Name DOUT4 DOUT3 DOUT2 DOUT1 DOUT0 OE ENRC VDD I/O1 O O O O O Ip Ip - Data output 4 Data output 3 Data output 2 Data output 1 Data output 0 Output enable Circulating/non-circulating control Supply voltage Description
1. Ip = input pin with pull-up resistor, I = input pin, O = output pin. All outputs are 3-state pins.
SPECIFICATIONS
Absolute Maximum Ratings
VSS = 0 V
Parameter Supply voltage range Input voltage range Storage temperature range Power dissipation Soldering temperature Soldering time Symbol VDD VIN Tstg PD Tsld tsld Rating -0.3 to 7.0 VSS - 0.3 to VDD + 0.3 -40 to 125 330 255 10 Unit V V C mW C s
Recommended Operating Conditions
VSS = 0 V
Rating Parameter Symbol Condition min Standard-voltage specification Low-voltage specification Operating temperature Topr 4.5 2.7 -20 typ - - - max 5.5 4.5 70 V V C Unit
Supply voltage range
VDD
DC Characteristics
Standard-voltage specification: VDD = 5.0 0.5 V, VSS = 0 V, Ta = -20 to 70 C
Rating Parameter Standby current consumption Operating current consumption Input voltage1 Symbol IST IDD VIH VIL Output voltage2 Input current3 VOH VOL IIL IOH = -0.4 mA IOL = 1.6 mA VIN = 0 V OE = 0 V, fCLK = 54 MHz Condition min - - 2.4 - 2.5 - - typ - 30 - - - - 100 max 50 50 - V 0.5 - V 0.4 200 A A mA Unit
NIPPON PRECISION CIRCUITS--3
SM5839A
Rating Parameter Input leakage current4 Input leakage current1 Output high-impedance leakage current2 Symbol ILL ILH IZH IZL Condition min VIN = 0 V VIN = VDD VOUT = VDD VOUT = 0 V - - - - typ - - - - max 1 1 5 5 A A A Unit
1. All inputs (CLK, DIN0 to DIN7, S0 to S6, OE, ENRC) 2. All outputs (DOUT0 to DOUT7) 3. Inputs DIN0 to DIN7, S0 to S6, OE, ENRC 4. Input CLK only
Low-voltage specification: VDD = 3.0 0.3 V, VSS = 0 V, Ta = -20 to 70 C
Rating Parameter Standby current consumption Operating current consumption Input voltage1 Symbol IST IDD VIH VIL Output voltage2 Input current3 Input leakage current4 Input leakage current1 Output high-impedance leakage current2 VOH VOL IIL ILL ILH IZH IZL IOH = -0.4 mA IOL = 1.6 mA VIN = 0 V VIN = 0 V VIN = VDD VOUT = VDD VOUT = 0 V OE = 0 V, fCLK = 20 MHz Condition min - - 2.0 - 2.0 - - - - - - typ - 10 - - - - 30 - - - - max 50 20 - V 0.5 - V 0.8 60 1 1 5 5 A A A A A mA Unit
1. All inputs (CLK, DIN0 to DIN7, S0 to S6, OE, ENRC) 2. All outputs (DOUT0 to DOUT7) 3. Inputs DIN0 to DIN7, S0 to S6, OE, ENRC 4. Input CLK only
AC Characteristics
Standard-voltage specification: VDD = 5.0 0.5 V, VSS = 0 V, Ta = -20 to 70 C
Rating Parameter CLK clock frequency CLK rise time CLK fall time CLK clock pulsewidth DIN0 to DIN7, ENRC input setup time S0 to S6 input setup time DIN0 to DIN7, ENRC input hold time S0 to S6 input hold time DOUT0 to DOUT7 output data delay time Symbol fCLK tCR tCF tWH tS1 tS2 tH1 tH2 tD Output load circuit 1 Condition min - - - 7 2 12 2 0 - typ - - - - - - - - - max 54 100 100 - - - - - 18 MHz ns ns ns ns ns ns ns ns Unit
NIPPON PRECISION CIRCUITS--4
SM5839A
Rating Parameter DOUT0 to DOUT7 output data hold time DOUT0 to DOUT7 output enable delay time DOUT0 to DOUT7 output disable delay time Symbol Condition min tOH tOEN0, tOEN1 tODE0, tODE1 Output load circuit 1 Output load circuit 2 Output load circuit 2 4 - - typ - - - max - 18 18 ns ns ns Unit
Low-voltage specification: VDD = 2.7 to 4.5 V, VSS = 0 V, Ta = -20 to 70 C
Rating Parameter CLK clock frequency CLK rise time CLK fall time CLK clock pulsewidth DIN0 to DIN7, ENRC input setup time S0 to S6 input setup time DIN0 to DIN7, ENRC input hold time S0 to S6 input hold time DOUT0 to DOUT7 output data delay time DOUT0 to DOUT7 output data hold time DOUT0 to DOUT7 output enable delay time DOUT0 to DOUT7 output disable delay time Symbol fCLK tCR tCF tWH tS1 tS2 tH1 tH2 tD tOH tOEN0, tOEN1 tODE0, tODE1 Output load circuit 1 Output load circuit 1 Output load circuit 2 Output load circuit 2 Condition min - - - 10 5 22 2 0 - 7 - - typ - - - - - - - - - - - - max 20 100 100 - - - - - 35 - 35 35 MHz ns ns ns ns ns ns ns ns ns ns ns Unit
Output load circuit 1
Output pin 40pF
Output load circuit 2
500 Output pin 40pF 0V (tODE1, tOEN1) 2.6V (tODE0, tOEN0) standard voltage type 1.6V (tODE0, tOEN0) Low voltage type
NIPPON PRECISION CIRCUITS--5
SM5839A
TIMING DIAGRAM
tCF 90% tWH tH1 DIN to DIN7 1/fCLK tS1 tH1 10%
tCR
CLK
1.5V
1.5V
tS1 ENRC tH2 S0 to S6 tS2
tH1
tS1 1.5V
tH2 1.5V
OE tD tODE (tODE1) V DOUT0 to DOUT7 V (tODE0) Hi-Z V=0.1VDD (tOEN0) Invalid tOEN (tOEN1) tOH
1.5V
1.5V
NIPPON PRECISION CIRCUITS--6
SM5839A
FUNCTIONAL DESCRIPTION
Initialization
After power is first applied, up to a maximum of 128 input data cycles are considered invalid. However, any cycle that momentarily sets the register length to 2 steps (by setting S1 to S6 all LOW) and then to the desired value is considered to be the first valid cycle.
Clock and Output Control
Input Shift register ENRC x x H L CLK x x LH LH OE L H x x - - Circulating Non-circulating DOUT0 to DOUT7 High impedance Enabled - - Output
Resister Length Select
The S0 to S6 inputs set the register length (L) to the decimal-value given by the following equation using positive logic (HIGH = 1 and LOW = 0). L = 64 (S6) + 32 (S5) + 16 (S4) + 8 (S3) + 4 (S2) + 2 (S1) + (S0) + 1
Length 128 127 126 125 66 65 64 3 2 S6 1 1 1 1 1 1 0 0 0 S5 1 1 1 1 0 0 1 0 0 S4 1 1 1 1 0 0 1 0 0 S3 1 1 1 1 0 0 1 0 0 S2 1 1 1 1 0 0 1 0 0 S1 1 1 0 0 0 0 1 1 0 S0 1 0 1 0 1 0 1 0 x
NIPPON PRECISION CIRCUITS--7
SM5839A
NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification. The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter, including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies. NIPPON PRECISION CIRCUITS INC. 4-3, 2-chome Fukuzumi Koto-ku, Tokyo 135-8430, Japan Telephone: 03-3642-6661 Facsimile: 03-3642-6698 NC9615BE 1999.10
NIPPON PRECISION CIRCUITS--8
NIPPON PRECISION CIRCUITS INC.

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