MM5450_11 MICREL | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 9

Technical content

Features

  • Continuous brightness control
  • Serial data input
  • No load signal requirement
  • Enable (on MM5450)
  • Wide power supply operation
  • TTL compatibility
  • 34 or 35 outputs, 15mA capability
  • Alphanumeric capability

Ordering Information

Temp. Range Package MM5450BN MM5450YN –40°C to+85°C 40-pin PDIP MM5451BN MM5451YN –40°C to+85°C 40-pin PDIP MM5450BV MM5450YV –40°C to+85°C 44-pin PLCC MM5451BV MM5451YV –40°C to+85°C 44-pin PLCC Block Diagram

35 OUTPUT BUFFERS

35 LATCHES

(only available in die form) SERIAL DATA 22 CLOCK 21 DATA ENABLE/OUT 35 (See Note 1) 20 24 OUT 34 OUT 1 BRIGHTNESS CONTROL VDD Note 1: Pin 23 is Data Enable in MM5450 Pin 23 is Output 35 in MM5451 Figure 1.

Micrel, Inc. MM5450/5451 February 2006 3 M9999-021606 (408) 955-1690 Connection Diagram: Plastic Leaded Chip Carrier MM5451BV/YV OUTPUT BIT 13 OUTPUT BIT 12 OUTPUT BIT 11 OUTPUT BIT 10 OUTPUT BIT 9 OUTPUT BIT 8 OUTPUT BIT 7 OUTPUT BIT 6 OUTPUT BIT 5 OUTPUT BIT 4 OUTPUT BIT 23 OUTPUT BIT 24 OUTPUT BIT 25 OUTPUT BIT 26 OUTPUT BIT 27 NC OUTPUT BIT 28 OUTPUT BIT 29 OUTPUT BIT 30 OUTPUT BIT 31 OUTPUT BIT 32 NC 6 44 43 42 41 40 232221201918 24 25 26 27 28 MM5450BV/YV OUTPUT BIT 13 OUTPUT BIT 12 OUTPUT BIT 11 OUTPUT BIT 10 OUTPUT BIT 9 OUTPUT BIT 8 OUTPUT BIT 7 OUTPUT BIT 6 OUTPUT BIT 5 OUTPUT BIT 4 OUTPUT BIT 23 OUTPUT BIT 24 OUTPUT BIT 25 OUTPUT BIT 26 OUTPUT BIT 27 NC OUTPUT BIT 28 OUTPUT BIT 29 OUTPUT BIT 30 OUTPUT BIT 31 OUTPUT BIT 32 NC 6 44 43 42 41 40 232221201918 24 25 26 27 28 Figure 4a, 4b.

Micrel, Inc. MM5450/5451 February 2006 4 M9999-021606 (408) 955-1690 Absolute Maximum Ratings Power Dissipation Junction Temperature (T Operating Ratings

Electrical Characteristics

4.5V ≤ VDD ≤ 11V, VSS = 0V; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C, unless otherwise noted. Symbol Parameter Condition Min Typ Max Units Power Supply Current –25°C to +85°C, excluding output loads –40°C to +85°C, excluding output loads 8.5 mA mA V L VH Data Input Voltage logic-0 level, ±10 µA input bias logic-1 level, 4.75V ≤ VDD ≤ 5.25V VDD > 5.25V –0.3 2.2 VDD –2 0.8 VDD VDD V V V Brightness Control Input Current Note 2 0 0.75 mA segment off, VOUT = 3.0V 10 µA Output Sink Current segment on, VOUT = 1.8V, Note 3 brightness input = 0µA brightness input = 100µA brightness input = 750µA 2.0 2.7 µA mA mA Brightness Control Input V oltage input current = 750 µA 3.0 4.3 V Output Matching Note 1 ±20 % fC Clock Input Frequency Notes 5, 6 500 kHz tH Clock Input High Time Notes 5, 6 950 ns tL Clock Input Low Time Notes 5, 6 950 ns tDS Data Input Setup Time 300 ns tDH Data Input Hold Setup Time 300 ns tDES Data Enable Input Setup Time 100 ns Reset Pad Current die 8 8 µA Notes: 1. Output matching is calculated as the percent variation (IMAX + IMIN) / 2. 2. With a fixed resistor on the brightness input pin, some variation in brightness will occur among devices. 3. See Figures 7, 8 and 9 for recommended operating conditions and limits. Absolute maximum for each output should be limited to 40mA. 4. VOUT should be regulated by user. See Figures 8 and 9 for allowable VOUT vs. IOUT operation. 5. AC input waveform specification for test purpose: tR ≤ 200ns, tF ≤ 20ns, f = 500kHz, 50% ±10% duty cycle. 6. Clock input rise and fall times must not exceed 300ns.

Micrel, Inc. MM5450/5451 February 2006 9 M9999-021606 (408) 955-1690

Package Information

40-Pin Plastic DIP (N) 44-Pin PLCC (V) MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2002 Micrel, Incorporated.