集成电路芯片资料和参数

芯片型号:CC4054

功能特点

产品名称:LIQUID-CRYSTALDISPLAY DRIVERS 液晶显示器驱动程序

产品型号:CC4054

产品特征:

40544-SEGMENT DISPLAY DRIVER -STROBED LATCH FUNCTION

4055 BCD TO 7-SEGMENT DECODER/DRIVER, WITH ”DISPLAY-FREQUENCY” OUTPUT

4056 BCD TO 7-SEGMENT DECODER/DRIVER WITH STROBED LATCH FUNCTION

1. QUIESCENT CURRENT SPECIFIED TO 20V FOR HCC DEVICE

2. OPERATION OF LIQUID CRYSTALS WITH COS/MOS CIRCUITS PROVIDES ULTRA LOW-POWER DISPLAYS

3. EQUIVALENT AC OUTPUT DRIVE FOR LIQUID-CRYSTAL DISPLAYS-NO EXTERNAL

4. VOLTAGE DOUBLING ACROSS DISPLAY [(VDD – VEE) = 18V)] RESULTS IN EFFECTIVE 36V (p-p) DRIVE ACROSS SELECTED DIS-PLAY SEGMENTS

5. LOW-OR HIGH-OUTPUT LEVEL DC DRIVE FOR OTHER TYPES OF DISPLAYS

6. ON-CHIP LOGIC-LEVEL CONVERSION FOR DIFFERENT INPUT AND OUTPUT-LEVEL SWINGS

7. FULL DECODING OF ALL INPUT COMBINATIONS:

”0 – 9, L, H, P, A– ” AND BLANK POSITIONS

8. INPUT CURRENT OF 100nA AT 18V AND 25?C FOR HCC DEVICE

9. 100% TESTED FOR QUIESCENT CURRENT

10. MEETSALLREQUIREMENTSOFJEDECTENTATIVE STANDARD N?. 13A, ”STANDARD SPECIFICATIONS FOR DESCRIPTION OF ”B” SERIESCMOS DEVICES”

产品描述:

The CC4054 , CC4055 and CC4056 (extended temperature range) and the CC4054, CC4055 and CC4056 (intermediate temperature range) are monolithic integrated circuits available in 16-lead dual in-line plastic or ceramic package and plastic micro package. The CC4055 and

CC4056 types are single-digit BCD-to-7-segment decoder/driver circuits that provide level-shifting functions on the chip. This feature permits the BCD input-signal swings (VDD to VSS) to be the same as or different from the 7-segment output-signal swings (VDD to VEE). For example, the BCD input-signal swings (VDD to VSS) may be as low as 0 to – 3V, whereas the output-display drive-signal swing (VDD to VEE)may be from 0 to – 5V. If VDD to VEE exceeds

15V, VDD to VSS should be at least 4V. The 7-segment outputs are controlled by the DISPLAY-FREQUENCY (DF) input which causes the selected segment outputs to be low, high, or a square-wave output (for liquid-crystal displays). When the DF input is low the output segments will be high when selected by the BCD inputs. When the DF input is high, the output segments will be low when selected by the BCD inputs. When a square-wave is present at the DF input, the selected segments will have a square-wave output that is 180??out of phase with the DF input. Those segments which are not selected will have a square-wave output that is in phase with the input. DF square-wave repetition rates for liquid-crystal displays usually range from 30Hz (well above flicker rate) to 200Hz (well below the upper limit of the liquid-crystal frequency response). The CC4055 provides a level shifted high-amplitude DF output which is required for driving the common electrode in liquid-crystal displays. The CC4056 provides a strobed-latch function at the BCD inputs. Decoding of all

input combinations on the CC4055 and CC4056 provides displays of 0 to 9 as well as L, P, H, A,– , and a blank position. (see typical application for other letters). The CC4054 provides

level shifting similar to the CC4055 and CC4056 independently strobed latches, and common DF control on 4 signal lines. The CC4054 is intended to provide drive-signal compatibility with the CC4055 and CC4056 7-segment decoder types for the decimal point, colon, polarity, and similar display lines. A level-shifted high-amplitude DF output can be obtained from any CC4054 output line by connecting the corresponding input and strobe lines to a low and high level, respectively. The CC4054 may also be utilized for logic-level” up conversion” or ”down conversion”. Forexample, input-signal swings (VDD to VSS) from + 5 to 0V can be converted to output-signal swings (VDD to VEE) of + 5 to – 5V. The level-shifted function on all three types permits the use of different input-and output signal swings. The input swings from a low level of

VSS to a high level of VDD while the output swings from a low level of VEE to the same high level of VDD. Thus, the input and output swings can be selected independently of each other over a 3-to-18V range. VSS may be connected to VEE when no level-shift function is required. For the CC4054 and CC4056 , data are transferred from input to output by placing a high voltage level at the strobe input. A low voltage level at the strobe input latches the data input and the corresponding output segments remain selected (or non-selected) while the strobe is low. Whenever the level-shifting function is required, the CC4055 can be used by itself to drive a liquid-crystal display (fig. 10 and fig. 12). The CC4056 , however, must be used together with a CC4054 to provide the common DF output (fig. 14). The capability of extending the voltage swing on the negative end (this voltage cannot be extended on the positive end) can be used to advantage in the set-up of fig. 11. Fig. 9 is common to all three types.

产品封装:DIP