5475

DM7475 NSC | Alldatasheet

Document overview

• Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
• PDF pages: 3

Technical content

n Quad Latches General Description These latches are ideally suited for use as temporary stor- These latches feature complementary Q and © outputs ‘age for binary information between processing units andin- —_from a 4-bit latch and are available in 16-pin packages. put/output or indicator units. Information present at a data (D) input is transferred to the Q input when the enable (G) is Features high, and the Q output will follow the data input as long aS Alternate Military/Aerospace device (5475) is available. the enable remains high. When the enable goes low, the Contact a National Semiconductor Sales Office/Distrib- information (that was present at the data input at the time utor for specifications. the transition occurred) is retained at the Q output until the enable is permitted to go high. ———). SSSSSSSSSssSsSSSSSSSSSSSSSsSSSSSSSsS Connection Diagram Function Table (ach Latch) or a2 a2 3" Guo Gs as a4 Lote] ofa 16 1s rata faz sft fto—s [io t H L H H H H L x L Qo fer) H = High Level, L = Low Level, X = Don't Care, Qo = The Level of Q Before the High- to-Low Transition of G 1 2 3 4 5 6 7 @ Got D2 ENABLE Vcc 3 pa Ga 3-4 TL/F 6527-1 ‘Order Number 5475DMQB, 5475FMQB, DM5475u, DM5475W or DM7475N See NS Package Number J16A, N16E or W16A Logic Diagram (ach Latch Chest ENABLE DATA TLE /8527-2 4-78

a Absolute Maximum Ratings (note) If Milltary/Aerospace specified devices are required, Note: The “Absolute Maximum Ratings” are those values Please contact the National Semiconductor Sales beyond which the safety of the device cannot be guaran- Oftice/Distributors for availability and specifications. teed. The device should not be operated at these limits. The Supply Voltage v parametric values defined in the “Electrical Characteristics” Input Voltage 5.5V table are not guaranteed at the absolute maximum ratings. . . ° The “Recommended Operating Conditions” table will detine Operating Free Air Temperature Range the conditions for actual device operation. DM54 and 54 ~—55°C to + 125°C DM74 OC to +70°C Storage Temperature Range ~65°C to + 150°C Recommended Operating Conditions DM7475 Voo__| Supp Voltage [as [os [ss [a7 [ s | sa |v w EnabiePuseweatn ores) | 20 [| [| a fT ts 'sy Setup Time (Note 4 [vo fT a Ps tu Hold Time (Note 4 Ps fof of se fy ss Ts FreeAirOperating Temperature | -s5 | | sas | o [ | wm | Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted) Typ Syme ee eee (Note 1 “ Vou High Level Output Voc = Min, low = Max v Voltage Vit = Max, Viq = Min Vor Low Level Output Voc = Min, lo, = Max 04 V Voltage Vin = Min, Vi, = Max “ i Input Current @ Max Vo = Max, V; = 5.5V mA Input Voltage im Voo = Max Vi= 24V ee tie Low Level Input Current Voc = Max, Vi = 0.4V ee mA los Short Greuit Voo= Mex [ome [| -20 | | ~s5 | ay lec Supply Curent Voc = Max oss | Tce Tw |, wore) ows [|e so Note 1: All typicals are at Voc = SV, Ta = 25°C. Note 2: Not more than one output should be shorted at a time. Note 3: ioc is measured with all inputs grounded and all outputs open. Note 4: Ta = 26°C and Vg = SV 4 | 4-79

• . Switching Characteristics at Voc = 5v and Ta = 25°C (See Section 1 for Test Waveforms and Output Load) FR, = 4000 Symbol From (Input) CL = 15pF Units row wn Tx | tPHL Propagation Delay Time hs High to Low Level Output tPLH Propagation Delay Time ns Low to High Level Output tPHL Propagation Delay Time ns High to Low Level Output tPLH Propagation Delay Time 40 ns Low to High Level Output tPHL Propagation Delay Time ns High to Low Level Output tPLH Propagation Delay Time ns Low to High Level Output PHL Propagation Delay Time ns High to Low Level Output TPLH Propagation Delay Time ns Low to High Level Output 4-80