Dual 4-bit binary ripple counter
INTEGRATED CIRCUITS
74F393 Dual 4-bit binary ripple counter
Product specification IC15 Data Handbook 1988 Nov 01
Phili...
Description
INTEGRATED CIRCUITS
74F393 Dual 4-bit binary ripple counter
Product specification IC15 Data Handbook 1988 Nov 01
Philips Semiconductors
Philips Semiconductors
Product specification
Dual 4-bit binary ripple counter
74F393
FEATURES
Two 4-bit binary counters Two Master Resets to clear each 4-bit counter individually
DESCRIPTION
The 74F393 is a Dual Ripple Counter with separate Clock (CPn) and Master Reset (MR) inputs to each counter. The two counters are identified by the “a” and “b” suffixes in the pin configuration. The operation of each half of the 74F393 is the same. The counters are triggered by a High-to-Low transition of the Clock (CPa and CPb) inputs. The counter outputs are internally connected to provide Clock inputs to succeeding stages. The outputs of the ripple counter do not change synchronously and should not be used for high speed address decoding. The Master Resets (MRa and MRb) are active High asynchronous inputs; one for each 4-bit counter. A High level in the MR input overrides the Clock and sets the outputs Low.
PIN CONFIGURATION
CPa MRa Q0a Q1a Q2a Q3a GND 1 2 3 4 5 6 7 14 13 12 11 10 9 8 VCC CPb MRb Q0b Q1b Q2b Q3b
SF00704
TYPE 74F393
TYPICAL fMAX 125MHz
TYPICAL SUPPLY CURRENT (TOTAL) 40mA
ORDERING INFORMATION
DESCRIPTION 14-pin plastic DIP 14-pin plastic SO COMMERCIAL RANGE VCC = 5V ±10%, Tamb = 0°C to +70°C N74F393N N74F393D PKG DWG # SOT27-1 SOT108-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS CPa, CPb MRa, MRb Qna – Qnb Clock inp...
Similar Datasheet