N74F399N,602 NXP

INTEGRATED CIRCUITS 74F399 Quad 2-port register Product specification 2000 Jun 30 Supersedes data of 1999 Jan 08 IC15 Data Handbook Philips Semiconductors Product specification Quad 2-port register 74F399 FEATURES ORDERING INFORMATION Select inputs from two data sources COMMERCIAL RANGE V = 5V 10%, DESCRIPTION PKG DWG CC Fully positive edge-triggered T = 0C to +70C amb 16-pin plastic DIP N74F399N SOT38-4 DESCRIPTION 16-pin plastic SO N74F399D SOT109-1 The 74F399 is the logical equivalent of a quad 2-input multiplexer feeding into four edge-triggered flip-flops. A common Select input determines which of two 4-bit words is accepted. The selected data enters the flip-flops on the rising edge of the clock. PIN CONFIGURATION The 74F399 is a high speed quad 2-port register. They select 4 bits S 1 16 of data from either of two sources (Ports) under control of a common V CC select input (S). The selected data is transferred to a 4-bit output Qa 2 15 Qd register synchronous with the Low-to-High transition of the Clock I0a 3 14 I0d input (CP). The 4-bit D-type output register is fully edge-triggered. The Data inputs (I0n, I1n) and Select input (S) must be stable only a I1a 4 13 I1d setup time prior to and hold time after the Low-to-High transition of I1b 5 12 I1c the Clock input for predictable operation. I0b 6 11 I0c Qb 7 10 Qc TYPICAL SUPPLY CURRENT TYPE TYPICAL f MAX GND 8 9 CP (TOTAL) 74F399 120MHz 22mA SF00951 INPUT AND OUTPUT LOADING AND FAN-OUT TABLE 74F (U.L.) LOAD VALUE PINS DESCRIPTION HIGH/LOW HIGH/LOW I0a, I0b, I0c, I0d Data inputs from source 0 1.0/1.0 20A/0.6mA I1a, I1b, I1c, I1d Data inputs from source 1 1.0/1.0 20A/0.6mA S Common Select input 1.0/1.0 20A/0.6mA CP Clock input (active rising edge) 1.0/1.0 20A/0.6mA Qa, Qb, Qc, Qd Register true outputs 50/33 1.0mA/20mA NOTE: One (1.0) FAST unit load is defined as: 20A in the High state and 0.6mA in the Low state. LOGIC SYMBOL IEC/IEEE SYMBOL (IEEE/IEC) 3 46 5 11 12 14 13 MUX 1 G1 9 I0a I1a I0b I1b I0c I1c I0d I1d C1 3 S 1, 2D 2 1 4 1, 2D CP 9 6 7 5 Qc Qd 11 Qa Qb 10 12 14 15 10 15 27 13 V = Pin 16 CC GND = Pin 8 SF00952 SF00953 2 2000 Jun 30 8530028 24024